In what direction is harmful radiation from the monitor?

In the 80s

The main characteristics of the processor include

“The World Wide Web is globally distributed with hyperlinks.”.

D. information system

When working with a text editor, the following personal computer hardware is required:

  • Keyboard, display, processor, random access memory, external storage device (disk), printer
  • Mouse, scanner, hard drive
  • Modem, plotter
  • Keyboard, display, mouse, printer

A computer connected to the Internet must have:

  • Web page;
  • IP address;
  • Home Web Page
  • Domain name

Communication channels (telephone, fiber-optic, satellite, etc.) allow

keep information;
2. transmit information;
3. process information;
4.create information.

The minimum unit of measurement of the amount of information is taken

1 baud;
2.1 bit;
3.1 byte;
4.1 Kbyte.

Computer performance (speed of operations) depends on

display screen size
2.processor frequency
3.voltage supply
4.speed of keystrokes

What are the main stages of information processing by a computer?

Input and output of information.
2. Input, transformation, storage, output of information.
3. Saving information in a file.

What action is not recommended when the computer is on?

insert / remove a floppy disk
2. disconnect / connect external devices
3.reboot the computer by pressing the RESET button
4.reboot the computer by pressing the CTRL-ALT-DEL keys

Mass production of personal computers began in Russia.

1) unit of information
2) program in RAM
3) text printed on a printer
4) program or data on disk

The tools in the graphical editor are.

2) selection, copying, pasting
3) pencil, brush, eraser
4) color sets (palettes)

Which of the methods of connecting to the Internet provides the greatest opportunities for accessing information resources.

1) dial-up dial-up remote access
2) permanent connection via fiber optic channel
3) permanent connection through a dedicated telephone channel
4) terminal connection over a dial-up telephone channel

1) very large text
2) structured text, in which transitions can be made by selected labels
3) text typed on a computer
4) text that uses a large font

When you turn off your computer, all information is erased.

1) floppy disk
2) on CD-ROM
3) hard drive
4) in RAM

In which direction from the monitor the harmful radiation is maximal?

1) from the screen forward
2) from the screen back
3) from the screen down
4) from the screen up

21 Electronic mail (e-mail) allows you to send.

1) messages only
2) only files
3) messages and attached files
4) video image

1) initial boot of the operating system
2) organize files
3) storage of important files
4) “cure” the computer from “viruses”

In a text editor, when setting page parameters, the.

1) typeface, size, style
2) indent, spacing
3) margins, orientation
4) style, pattern

To save a text file (document) in a specific format, you need to set.

Cannot be deleted in spreadsheets.

1) column3) cell name
2) string4) cell contents

An e-mail address on the Internet is set: user_name@mtu-net.ru
What is the name of the owner of this email address?

1) ru3) user_name
2) mtu-net.ru4) mtu-net

Browsers (e.g. Microsoft Internet Explorer) are.

1) Internet servers
2) antivirus programs
3) translators of the programming language
4) web viewer

Hyperlinks on a web page can provide navigation.

1) to any web page of any Internet server
2) to any web page within the given domain
3) to any web page of this server
4) within the given web page

Infection with computer viruses can occur during.

1) printing on a printer3) formatting the floppy
2) working with files4) shutting down the computer

What is the most common extension in the name of text files?

The largest information volume will have a file containing.

1) 1 page of text
2) black and white drawing 100×100
3) 1 minute audio clip.
4) video clip of 1 min duration.

Internet servers containing file archives allow.

33 Computer viruses can be infected by

Date Added: 2015-02-22; views: 7 | Copyright infringement

Question 9

List of test questions

Question 10

direction, harmful, radiation, monitor

CNET How to: Reduce computer-related eyestrain

What devices can have harmful effects on human health?

Answer options

Question 5

Select the basic health requirements that students must follow when working at the computer

direction, harmful, radiation, monitor

Question 1

Select the main factors that are harmful to health while working at the computer

Question 2

Note which of the following is a major concern of ergonomics.

Question 12

In which direction from the monitor the harmful radiation is maximal?

Ways to protect against harmful effects of your computer

The flip side of technical progress is the dangers associated with it. How can they be avoided or at least minimized? How can I reduce radiation from a computer? Information about its harmful effects should logically be accompanied by recommendations on how to protect against its radiation.

  • Since the maximum radiation level is located in its rear panel, the distance from it to the back of another user should not be less than 1.5 m.
  • Reduce the length of the power wires as much as possible.
  • The monitor should be located at a convenient distance for sight, and the system unit should be as far away from the user as possible.
  • To eliminate radiation from the sides of the monitor, place it in the corner of the room.

Wet cleaning of the room and the presence of an ionizer will serve as additional protection against electromagnetic radiation from the computer.

  • Remember to turn off your computer when you’re done.
  • When choosing a monitor, give preference to the LCD version with the Low Radiation inscription, indicating a low radiation level.
  • Do not neglect special protective screens, which is very important if children play at the computer, who, in the heat of gaming battles, spend several hours at the monitor, leaning low to its screen.
  • When placing several computers in an office or classroom, they should be located around the perimeter, leaving the center of the room free.
  • Computer radiation and pregnancy

    Pregnancy is an extremely important time in a woman’s life. From the moment of conception until the birth of a child, the growing fetus is extremely sensitive to adverse external influences. Therefore, intrauterine damage to the embryo by an electromagnetic field can occur at any stage of its development. The early stages of pregnancy are especially dangerous in this regard, when miscarriages most often occur and malformations of an unborn baby develop. Therefore, the expectant mother should be very responsible about the influence of computer radiation on pregnancy.

    Despite the compactness of a laptop, radiation from it during pregnancy is no less dangerous than the same effect from a regular computer. the intensity is the same, plus the effect of the Wi-Fi transmitter. In addition, many women, even during pregnancy, do not part with the habit of holding this portable device on their lap, that is, in the immediate vicinity of a developing baby.

    What is the harm of computer radiation

    We are the first generation of humans to live in an ocean of vast amounts of visible and invisible radiation. Therefore, there is still no reliable statistics that summarizes all the studies of scientists on this topic. So what do the pundits say?

    Each PC is source of low frequency and radio frequency radiation. Health experts say:

    • both types of rays are carcinogenic;
    • they increase the risk of cardiovascular disease and hormonal disorders;
    • as well as Alzheimer’s disease, asthma and depression.

    All parts of the computer can be harmful. The processor generates this very microwave radiation, which “with pleasure” spreads in space in the form of electromagnetic waves, often carrying misinformation, to the human electromagnetic field.

    To determine in which direction the harmful radiation is greatest from the monitor, remember that the front of the monitor has a protective cover. But the back wall and side surfaces are not protected. Manufacturers of computer equipment considered ensuring the safety of the operator sitting in front of the screen as a paramount task, so the opinion that the radiation from the monitor behind and from the sides is stronger is quite reasonable.

    Monitors with a cathode-ray tube, thank God, are becoming rarities of history. The harm from them was very significant. The LCD monitors that replaced them are certainly safer, but they still emit radiation. By the way, the word radiation, indicated in the computer documentation, translates as radiation, but not as radioactivity.

    Due to the heating of the motherboard and case, air is deionized and harmful substances are released into the environment. This is why the air in rooms with computers constantly running is very hard to breathe. For people with a weak respiratory system, such a factor can have a detrimental effect, provoking asthma. It is further aggravated by the influence of the electrostatic field of a computer and a monitor on dust particles suspended in the air. Electrified, they form a “dusty cocktail” that makes breathing difficult.

    The presence of a touch screen does not at all guarantee you the absence of radiation. After all, your fingers, performing manipulations on the screen, are in contact with it all the time, and a few millimeters from the wi-fi antenna.

    Special attention should be paid to the problem of radiation from laptops, which were conceived as portable devices for working on the road. The use of these convenient and multifunctional devices during a full working day may well cause all kinds of pathologies and diseases. After all, he, like an ordinary computer, is source of electromagnetic radiation, and even is in the immediate vicinity of a person. Many users even inadvertently place it on their knees, in close proximity to vital organs.

    READ  The monitor screen is stretched horizontally how to fix

    Is radiation from a computer harmful?

    The computer is one of the most remarkable achievements of human intelligence. The possibility of direct dialogue between users through computers and huge PC resources has led to the fact that millions of people spend more and more time in front of his screen. Over time, computer users develop a set of specific complaints about their well-being.

    This makes us think about the effect of radiation from a computer on human health. There are many reasons for this. A number of scientists associate health problems with the exposure of people to electromagnetic radiation from household microwave sources.

    Do Plants Help Protect Against Computer Radiation

    Even among reputable office workers, there is an opinion that some plants protect against computer radiation.

    So which flower protects against computer radiation? Cactus is traditionally preferred here. Under this myth even summed up “scientific basis”: the needles of the plant are attributed to the role of antennas, formulas are given and calculations are made. If there was a grain of truth in this statement, then in the homeland of cacti. Mexico, there should be problems with the operation of radars, but they are not.

    The reality is that neither a cactus nor another plant will protect against computer radiation.!

    A flower near a computer can cheer you up, decorate a strict work atmosphere, and become a positive emotional component in everyday work. A “emotional placebo” can neutralize the harmful effects of electromagnetic radiation.

    What is the harm of computer radiation

    We are the first generation of humans to live in an ocean of vast amounts of visible and invisible radiation. Therefore, there is still no reliable statistics that summarizes all the studies of scientists on this topic. So what do the pundits say?

    Each PC is source of low frequency and radio frequency radiation. Health experts say:

    • both types of rays are carcinogenic;
    • they increase the risk of cardiovascular disease and hormonal disorders;
    • as well as Alzheimer’s disease, asthma and depression.

    All parts of the computer can be harmful. The processor generates this very microwave radiation, which “with pleasure” spreads in space in the form of electromagnetic waves, often carrying misinformation, to the human electromagnetic field.

    To determine in which direction the harmful radiation is greatest from the monitor, remember that the front of the monitor has a protective cover. But the back wall and side surfaces are not protected. Manufacturers of computer equipment considered ensuring the safety of the operator sitting in front of the screen as a paramount task, so the opinion that the radiation from the monitor behind and from the sides is stronger is quite reasonable.

    Monitors with a cathode-ray tube, thank God, are becoming rarities of history. The harm from them was very significant. The LCD monitors that replaced them are certainly safer, but they still emit radiation. By the way, the word radiation, indicated in the computer documentation, translates as radiation, but not as radioactivity.

    Due to the heating of the motherboard and case, air is deionized and harmful substances are released into the environment. This is why the air in rooms with computers constantly running is very hard to breathe. For people with a weak respiratory system, such a factor can have a detrimental effect, provoking asthma. It is further aggravated by the influence of the electrostatic field of a computer and a monitor on dust particles suspended in the air. Electrified, they form a “dusty cocktail” that makes breathing difficult.

    The presence of a touch screen does not at all guarantee you the absence of radiation. After all, your fingers, performing manipulations on the screen, are in contact with it all the time, and a few millimeters from the wi-fi antenna.

    Special attention should be paid to the problem of radiation from laptops, which were conceived as portable devices for working on the road. The use of these convenient and multifunctional devices during a full working day may well cause all kinds of pathologies and diseases. After all, he, like an ordinary computer, is source of electromagnetic radiation, and even is in the immediate vicinity of a person. Many users even inadvertently place it on their knees, in close proximity to vital organs.

    Computer radiation and pregnancy

    Pregnancy is an extremely important time in a woman’s life. From the moment of conception until the birth of a child, the growing fetus is extremely sensitive to adverse external influences. Therefore, intrauterine damage to the embryo by an electromagnetic field can occur at any stage of its development. The early stages of pregnancy are especially dangerous in this regard, when miscarriages most often occur and malformations of an unborn baby develop. Therefore, the expectant mother should be very responsible about the influence of computer radiation on pregnancy.

    Despite the compactness of a laptop, radiation from it during pregnancy is no less dangerous than the same effect from a regular computer. the intensity is the same, plus the effect of the Wi-Fi transmitter. In addition, many women, even during pregnancy, do not part with the habit of holding this portable device on their lap, that is, in the immediate vicinity of a developing baby.

    Is radiation from a computer harmful?

    The computer is one of the most remarkable achievements of human intelligence. The possibility of direct dialogue between users through computers and huge PC resources has led to the fact that millions of people spend more and more time in front of his screen. Over time, computer users develop a set of specific complaints about their well-being.

    This makes us think about the effect of radiation from a computer on human health. There are many reasons for this. A number of scientists associate health problems with the exposure of people to electromagnetic radiation from household microwave sources.

    Ways to protect against harmful effects of your computer

    The flip side of technical progress is the dangers associated with it. How can they be avoided or at least minimized? How can I reduce radiation from a computer? Information about its harmful effects should logically be accompanied by recommendations on how to protect against its radiation.

    • Since the maximum radiation level is located in its rear panel, the distance from it to the back of another user should not be less than 1.5 m.
    • Reduce the length of the power wires as much as possible.
    • The monitor should be located at a convenient distance for sight, and the system unit should be as far away from the user as possible.
    • To eliminate radiation from the sides of the monitor, place it in the corner of the room.

    Wet cleaning of the room and the presence of an ionizer will serve as additional protection against electromagnetic radiation from the computer.

  • Remember to turn off your computer when you’re done.
  • When choosing a monitor, give preference to the LCD version with the Low Radiation inscription, indicating a low radiation level.
  • Do not neglect special protective screens, which is very important if children play at the computer, who, in the heat of gaming battles, spend several hours at the monitor, leaning low to its screen.
  • When placing several computers in an office or classroom, they should be located around the perimeter, leaving the center of the room free.
  • Do Plants Help Protect Against Computer Radiation

    Even among reputable office workers, there is an opinion that some plants protect against computer radiation.

    So which flower protects against computer radiation? Cactus is traditionally preferred here. Under this myth even summed up “scientific basis”: the needles of the plant are attributed to the role of antennas, formulas are given and calculations are made. If there was a grain of truth in this statement, then in the homeland of cacti. Mexico, there should be problems with the operation of radars, but they are not.

    The reality is that neither a cactus nor another plant will protect against computer radiation.!

    A flower near a computer can cheer you up, decorate a strict work atmosphere, and become a positive emotional component in everyday work. A “emotional placebo” can neutralize the harmful effects of electromagnetic radiation.

    Entrance control of first-year students

    Objective control of students’ knowledge is one of the main problems of quality management of the educational process. Therefore, the teacher needs to pay special attention to organizing and objectively monitoring the knowledge of students.

    The need for the entrance control of the knowledge of students who entered the college is due to the identification of the level of preparedness of students in the discipline “computer science”. Based on the results of the entrance control, a decision is made on the need to include optional classes in subjects where students showed poor knowledge.

    Therefore, to implement an effective independent input automated knowledge testing system. This system should include the following subsystems:

    • automatic generation of test control tickets;

     processing and summarizing the results of the control.

    Entrance control test for 1 course

    1. The basic unit of measurement of the amount of information is taken.

    • 1 baud
    • 1 bit
    • 1 byte
    • 1 KB

    2. How many bits are in the word INFORMATICS?

    • eleven
    • 88
    • 44
    • one

    3. How many bytes are in words INFORMATION TECHNOLOGIES?

    • 24
    • 192
    • 25
    • 2

    4. What is 1 byte?

    • 10 bit
    • 10 kB
    • 8 bit
    • 1 baud
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    5. The largest information volume will have a file containing.

    • 1 page of text
    • black and white drawing 100 x 100
    • 1 minute audio clip
    • 1 minute video clip

    6. How decimal number 2 is written in the binary number system?

    • 00
    • ten
    • eleven
    • 01

    7. What is 1 GB?

    • 210 MB
    • 103 MB
    • 1024 MB
    • 1,000,000 KB

    8. How many bytes in 2 GB?

    • 2 x 2 30
    • 2 x 2 3
    • 2 x 2 20
    • 2 x 2 31

    9. What is the minimum distance from the eyes to the monitor screen?

    • 20 cm
    • 40 cm
    • 60 cm
    • 80 cm

    10. Which device can have a harmful effect on human health?

    • monitor
    • system unit
    • a printer
    • modem

    11. In which direction from the monitor the harmful radiation is maximal?

    • from the screen down
    • from screen forward
    • from screen up
    • from screen back

    12. How often should you take breaks from work when working intensively at the computer?

    • do not do at all
    • each hour
    • every 3 hours
    • every 5 hours

    13. What functions does the operating system perform??

    • organizing and storing files
    • I / O device connections
    • organization of data exchange between a computer and various peripheral devices
    • organization of a dialogue with the user, control of equipment and computer resources

    14. BIOS. this is.

    • game program
    • dialogue shell
    • basic input-output system
    • operating system command language

    15. Where is the BIOS?

    • in random access memory (RAM)
    • on hard drive
    • on CD-ROM
    • in read-only memory (ROM)

    16. The folder into which deleted objects temporarily fall is called.

    • Basket
    • Operational
    • Portfolio
    • Notebook

    17. Current disk. this is.

    • the disk with which the user is currently working
    • CD-ROM
    • HDD
    • the disk that stores the operating system

    18. What functions does the command.com program perform??

    • handles commands entered by the user
    • stores all operating system commands
    • handles commands and programs that are executed each time the computer is started
    • stores all the commands that the user uses in his work

    19. Label. this is.

    • a copy of a file, folder or program
    • directory
    • a graphic representation of a file, folder, or program
    • moved file, folder or program

    20. Current directory. this is a directory.

    • which stores all the programs of the operating system
    • the volume of which changes when the computer is running
    • with which the user is working or has worked on this disk
    • which contains the files created by the user

    21. DOS is for.

    • work with external devices
    • only for processing and storing files
    • data exchange between the computer and various peripheral
    • devices for organizing control of a computer and its resources through a set of elementary operations

    22. Modem. this is a device designed for.

    • printing information
    • storage of information
    • processing information at a given time
    • transmission of information via telephone communication channels

    23. Electronic mail (e-mail) allows you to send.

    • only messages
    • only files
    • messages and attachments
    • video images

    24. An e-mail address on the Internet is set: user_name@int.glasnet.ru. What is the name of the owner of the email address?

    • int.glasnet.ru
    • user_name
    • glasnet.ru
    • ru

    25. Browsers (eg Microsoft Internet Explorer) are.

    • Internet servers
    • antivirus software
    • programming language translators
    • web viewer

    When and where to plant a cactus

    Actually, people who talk about computer radiation have confused a monitor with a nuclear reactor. The computer does not emit any radioactive particles (alpha, beta, gamma, neutron). Like any kinescope, a monitor’s kinescope emits X-ray radiation, but in modern monitors it is almost completely neutralized. And where did this belief come from? From the inscription on the monitor “Low Radiation”. But Radiation is translated into Russian. it is not radiation, but electromagnetic radiation. The computer really emits this radiation, like any electrical device, including a coffee maker. The monitor especially emits electromagnetic fields. The human body is capable of “magnetizing” and this changes the metabolism. Alternating electromagnetic fields cause oscillations of ions in the human body, which also does not always benefit it. However, these same fields are used in medicine (for example, in physiotherapy), but everything is dosed and calculated there. As you know, poison differs from medicine only in dosage. By the way, we “grab” no less dose of electromagnetic radiation from a TV, vacuum cleaner, trolleybus, and if there is an electrical wiring near your bed, it will be worse than a computer.

    What does this have to do with cacti? Yes, someone heard the ringing, but does not know where he is. Many plants (including cacti) do grow better when exposed to increased electromagnetic radiation. However, do they lower it or do they not affect it in any way? For the first time, information that cacti have the ability to absorb harmful radiation from computers flashed in the press in the late 80s. Since then, some have put cacti around the monitor, others claim that all this is nonsense. Where is the truth? Has anyone seriously investigated this problem? It turned out that yes. However, let’s talk about everything in order.

    As you know, harmful radiation emitted from the monitor. these are electromagnetic waves with a frequency from tens of hertz to hundreds of megahertz. How dangerous are they to human health? Monitors released in the 1980s emitted electromagnetic waves with terrible power. Studies have shown that their effect complicates cardiovascular diseases, negatively affects the development of pregnancy, reduces immunity, etc. The emitter in displays of old designs is a kinescope, more precisely, its “tail”, which is supplied with high-frequency high-voltage voltage. This “tail” acts as an antenna, spreading electromagnetic waves of unacceptable power in space around it. With their harsh radiation, old monitors create such interference that nearby devices sometimes fail. over, the strong radiation is extremely harmful to the health of operators and can also be used for industrial espionage purposes. From a distance of 30-150 m, special devices can read all the information they process from computers. The world press wrote about this at one time.

    As a result of the joint efforts of a number of large companies, many new technical solutions were found that helped to maximize the safety of the monitor. For example, the cases began to be shielded: from the inside, a metal layer, several microns thick, is sprayed onto the case, which, however, is equivalent to a whole metal sarcophagus. There has been a revolution in the design of cathode ray tubes. Instead of simple glass, with a phosphor applied to it, a multilayer composition of glass, phosphor and metals appeared. Displays made using new technologies give almost no electromagnetic radiation and are practically harmless to health. However, their serial production has been established only since 1995. True, the safer the monitor for our health, the higher its cost. Now there are already strict sanitary standards for the use of video display terminals and personal computers, but radiation (minimized and, according to experts, harmless to health) is still there.

    The most harmful are the high-frequency components of this radiation. Those hundreds of megahertz. This is especially true for older types of monitors. The wavelengths corresponding to this radiation are units of meters. This is much larger than any cactus. Therefore, electromagnetic waves flow around the cactus, practically “not noticing” it. However, as it turned out, everything is not so simple. Let’s draw an analogy between a monitor, cacti, a radiating antenna and reflectors used in air defense, which in essence are also mini antennas. Any radio engineer will confirm that not only its absolute dimensions, but also its shape are important for the antenna. Separate parts of a complex antenna, mutually influencing each other, sharply increase its efficiency, as if stretching its dimensions in space. Therefore, in radio engineering, along with the concept of the usual geometric size of the antenna, there is such a concept as “effective size”. The latter can be many times larger than the geometric one. So, the fact is that the shape of the cactus practically repeats the shape of the so-called multi-strip corner reflector. The effective dimensions of such a reflector are described by the Stokes-Schrebinger equation L = Lnments, where m. the length of the protrusion (i.e. the needle), n. number of rows of needles, t. number of needles in a row, s. step of needles. It is easy to see that the effective dimensions of such a reflector can be tens of times larger than its geometric dimensions. The main property of the multi-strip corner reflector is its ability to reflect the electromagnetic signal exactly in the direction it came from. It is this property that led to the use of such reflectors in military affairs, to interfere with enemy radars. Only a few of these things, dropped from an airplane, are capable of tightly clogging the radar screen with powerful reflected signals. So, as you can see, theoretical justifications for the protective properties of a cactus really exist.

    But what about in practice? This is where the problem comes in. The fact is that the Stokes-Schrebinger equation is true only if the multi-strip corner reflector is made with a very high degree of accuracy, which cannot be said about the cactus. However, there is a way out of this situation, and a rather simple one. Several of these reflectors can be combined into a system that will work in exactly the same way as a single reflector, but at the same time the manufacturing accuracy requirements for each specific reflector are dramatically reduced. The most interesting system for us (let’s call it the “pentagram”), in which the reflectors are located at the vertices of a regular pentagon. The edge of such a pentagon can be from 5 to 25 diameters of a single reflector. If source of electromagnetic radiation (for example, a monitor) is placed in the geometric center of such a pentagon, no radiation, whatever wavelength it has, can go beyond its limits. Such a system is an absolute electromagnetic shield.

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    It is also a cactus. This is a plant, and like any plant, it, or rather, its thorns can work as a passive type of air ionizer. Keeping flowers at home has always been beneficial and beneficial to human health.

    I. An interesting observation. The mystical science of Kabbalism prescribes, when invoking evil spirits, to outline with a pentagram the area where they should appear. In this case, the evil spirit will not be able to step over the pentagram and harm you. Doesn’t it seem to be suggestive?

    Was this page helpful? Share it on your favorite social network!

    Life safety check test (page 2)

    a, f. 1 a, e. 2 a, b. 3 b, e. 4 b, d. 5 a, c. 6 c, d. 7

    To combat harmful substances released into the air, the most rational methods are:

    a) equipment for ventilation units; b) replacement of harmful factors of the technological process with less harmful ones; c) sealing processes

    Indicate the correct combinations of these indicators:

    What is the minimum distance from the eyes to the monitor screen?

    Which device can have a harmful effect on human health?

    a) system unit; b) printer; c) monitor; d) modem

    How to look at the monitor?

    a) from left to right; b) bottom-up; c) top-down; d) right to left

    What to do during breaks when working at the computer?

    a) read a book; b) watch television; c) gymnastics for the feet; e) gymnastics for the eyes

    How to look at the monitor?

    a) from left to right; b) bottom-up; c) top-down; d) right to left

    Tests for the course “Industrial sanitation and occupational health

    Federal State Budgetary Educational Institution of Additional Professional Education for Specialists “Novgorod Institute for Retraining and Advanced Training of Leading Personnel and Specialists of the Agro-Industrial Complex”

    on the course “Industrial sanitation and occupational health”

    Tests are intended for passing the test in the discipline “Industrial sanitation and occupational health” are intended for students of the group of the professional retraining program “Safety of technological processes and production”.

    Considered and approved at the meeting of the department “Advanced technologies in the agro-industrial complex” FSBOU NIPPKRKS agro-industrial complex “31” January 2014, minutes No. 1

    All production factors affecting workers in the working area are divided into:

    a) traumatic; b) harmful; c) traumatic; d) dangerous

    By their nature, all production factors are subdivided into:

    a) physical, chemical, biological, carcinogenic;

    b) psychophysiological, physical, chemical, dynamic;

    c) neuropsychic, physical, chemical, biological; d) physical, chemical, psychophysiological, biological

    Chemical hazardous and harmful production factors are divided into:

    a) toxic, irritating, sensitizing, carcinogenic, affecting reproductive function; b) electrolytic, poisonous, allergic, irritating, infertile, mutation; c) penetrating through the respiratory system, gastrointestinal tract, skin and mucous membranes; d) penetrating through the lungs, skin, while eating

    Psychophysiological hazardous and harmful production factors are divided into:

    a) physical static and dynamic overload, emotional overload; b) dynamic overload, neuropsychic overload; c) physical overload, neuropsychic overload, alcoholic intoxication; d) physical static and dynamic overload, mental overstrain, overvoltage of analyzers, monotony of work, emotional overload

    Hazardous production factor. this is a factor, the action of which under certain conditions leads to:

    a) to injury; b) to death; c) to poisoning; d) to the development of occupational disease, decreased performance

    Harmful production factor. this is a factor, the action of which under certain conditions leads to:

    a) to the development of the disease; b) to poisoning; c) to a decrease in performance; d) injury

    The set of which parameters determines the industrial microclimate?

    a) temperature, relative humidity, air velocity, barometric pressure; b) temperature, relative humidity, air velocity, heat radiation intensity, barometric pressure; c) temperature, maximum humidity, air velocity, intensity of thermal radiation; d) temperature, relative humidity, air velocity, heat radiation intensity

    Human heat transfer is carried out mainly:

    a) radiation, convection, induction, evaporation of sweat; b) radiation, convection, radiation heat exchange; c) heat transfer during breathing, evaporation of sweat;

    When standardizing the parameters of the industrial microclimate, it is necessary to take into account: a) the seasons, the type of work, the presence of sources of thermal radiation, a permanent or non-permanent workplace, optimal or permissible working conditions; b) the presence of sources of thermal radiation, the category of work severity, permanent or non-permanent workplace, optimal or permissible weather conditions, the period of the year; c) period of the year, category of work severity, permanent or non-permanent workplace, optimal or permissible weather conditions; d) the period of the year, the category of work severity, optimal or permissible weather conditions, the presence of sources of thermal radiation

    When standardizing the parameters of the heating microclimate, take into account:

    a) temperature, relative humidity; air speed; b) temperature, relative humidity; air speed, heat radiation; c) temperature, relative humidity; air speed, heat radiation; index of heat load of the environment (HPS. index); d) index of heat load of the environment (HPS index)

    Maximum permissible concentration of harmful substances (MPC) in the air of the working area. this is the concentration at which one can be without a threat to health:

    a) for a short time; b) within 8 hours a day, but not more than 40 hours a week; c) within 8 hours a day, but not more than 40 hours a week, during the entire working experience; d) throughout life

    How hazardous substances are classified according to the degree of danger?

    a) into 5 hazard classes; b) into 4 hazard classes; c) into 6 hazard classes; d) into 3 hazard classes

    The main role in the development of occupational lung diseases (pneumoconiosis) is played by dust with the following characteristics:

    a) finely dispersed with a particle size of 0.2. 7 microns; b) finely dispersed with a particle size of less than 0.2 microns; c) coarse with a particle size of more than 10 microns; d) any dust

    The main measures to protect against thermal effects in production include:

    a) replacement of equipment, shielding, ventilation, special drinking regime, use of PPE; b) replacement of equipment, mechanization and automation, screening, air spraying of workplaces, drinking regime, overalls and PPE, work and rest regime; c) mechanization and automation, screening and ventilation of workplaces, work and rest, use of PPE; d) change of technical processes and replacement of equipment, screening of workplaces, observance of work and rest regimes, use of PPE

    Organized and regulated air exchange, which ensures the removal of air contaminated with harmful gases, vapors, dust from the room, as well as improves the meteorological conditions in the working area, is called:

    a) aeration; b) air spraying; c) ventilation;

    Based on hygienic criteria, working conditions are divided into four classes:

    a) optimal, permissible, harmful, dangerous; b) comfortable, uncomfortable, harmful, dangerous; c) harmful, heavy, dangerous, permissible; d) comfortable, harmful, heavy, extreme.

    Harmful working conditions (third class) according to the degree of excess of hygienic standards and the severity of changes in the body of workers are divided into:

    a) three degrees of harm (3.1, 3.2, 3.3); b) two degrees of harm (3.1, 3.2); c) four degrees of harm (3.1, 3.2, 3.3, 3.4); d) they are not subdivided according to the degree of harmfulness

    According to the principle of operation, ventilation is distinguished:

    a) general; b) supply air; c) mechanical; d) natural;

    Indicate the correct combinations of the indicated indicators: a, f. 1 a, e. 2 a, b. 3 b, e. 4 b, d. 5 a, c. 6 c, d. 7

    Ventilation is distinguished according to the place of action:

    a) general; b) supply air; c) mechanical; d) natural;

    Indicate the correct combinations of these indicators:

    a, f. 1 a, e. 2 a, b. 3 b, e. 4 b, d. 5 a, c. 6 c, d. 7

    According to the mode of action, ventilation is distinguished:

    a) general; b) supply air; c) mechanical; d) natural;

    Indicate the correct combinations of these indicators:

    How Far Should You Sit From Your Screen?

    a, f. 1 a, e. 2 a, b. 3 b, e. 4 b, d. 5 a, c. 6 c, d. 7

    To combat harmful substances released into the air, the most rational methods are:

    a) equipment for ventilation units; b) replacement of harmful factors of the technological process with less harmful ones; c) sealing processes

    Indicate the correct combinations of these indicators:

    What is the minimum eye distance from the monitor screen?

    Which device can have harmful effects on human health?

    a) system unit; b) printer; c) monitor; d) modem

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