At what temperature a body will not radiate any heat energy? (1) 0° C (2) 273° C (3) 100° C (4) -273° C

At what temperature a body will not radiate any heat energy? (1) 0° C (2) 273° C (3) 100° C (4) -273° C
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(4) -273° C
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The temperature of a liquid is 32° F. What is its temperature in Celsius scale? (1) 32° C (2) 0° C (3) 100° C (4) 212° C

Description : The temperature of a liquid is 32° F. What is its temperature in Celsius scale? (1) 32° C (2) 0° C (3) 100° C (4) 212° C

Last Answer : (2) 0° C

The temperature of a liquid is 32° F. What is its temperature in Celsius scale? (1) 32° C (2) 0° C (3) 100° C (4) 212° C

Description : The temperature of a liquid is 32° F. What is its temperature in Celsius scale? (1) 32° C (2) 0° C (3) 100° C (4) 212° C

Last Answer : 0° C

Clothes keep us warm in winter because they : (1) supply heat (2) do not radiate heat (3) prevent air from contacting the body (4) prevent the heat of the body from escaping

Description : Clothes keep us warm in winter because they : (1) supply heat (2) do not radiate heat (3) prevent air from contacting the body (4) prevent the heat of the body from escaping

Last Answer : (4) prevent the heat of the body from escaping Explanation: It is just because woolen clothes have fibres and between those fibres air is trapped which reduces heat loss. Air reduces heat loss ... heat from our body gets trapped inside the clothes which makes us feels warmer with the clothes.

Clothes keep us warm in winter because they : (1) supply heat (2) do not radiate heat (3) prevent air from contacting the body (4) prevent the heat of the body from escaping

Description : Clothes keep us warm in winter because they : (1) supply heat (2) do not radiate heat (3) prevent air from contacting the body (4) prevent the heat of the body from escaping

Last Answer : prevent the heat of the body from escaping

At what temperature are the temperature on Celsius and Fahrenheit scales equal? (1) 273° Celsius (2) -273° Celsius (3) -40° Celsius (4) 40° Celsius

Description : At what temperature are the temperature on Celsius and Fahrenheit scales equal? (1) 273° Celsius (2) -273° Celsius (3) -40° Celsius (4) 40° Celsius

Last Answer : (3) -40° Celsius

Steam at 100°C causes more severe burns than water at 100° C because – (1) steam has no specific heat capacity (2) steam has latent heat of vaporization (3) water has no specific heat capacity (4) water has latent heat of fusion

Description : Steam at 100°C causes more severe burns than water at 100° C because – (1) steam has no specific heat capacity (2) steam has latent heat of vaporization (3) water has no specific heat capacity (4) water has latent heat of fusion

Last Answer : (2) steam has latent heat of vaporization Explanation: It is because steam releases its latent heat as it condenses, which is substantial. The heat of vaporization of steam is over 2000 J per gram. And when it releases that it's then 100 degree water, the same as boiling water.

Steam at 1000C causes more severe burns than water at 100° C because (1) steam has no specific heat capacity (2) steam has latent heat of vaporisation (3) water has no specific heat capacity (4) water has latent heat of fusion

Description : Steam at 1000C causes more severe burns than water at 100° C because (1) steam has no specific heat capacity (2) steam has latent heat of vaporisation (3) water has no specific heat capacity (4) water has latent heat of fusion

Last Answer :  steam has latent heat of vaporisation

Cloudy nights are wanner compared nights, because clouds mainly – (1) Absorb heat from the atmosphere send it towards earth (2) Prevent cold waves from the sky descending on earth (3) Reflect back the heat given by earth (4) Produce heat and radiate it toward earth

Description : Cloudy nights are wanner compared nights, because clouds mainly – (1) Absorb heat from the atmosphere send it towards earth (2) Prevent cold waves from the sky descending on earth (3) Reflect back the heat given by earth (4) Produce heat and radiate it toward earth

Last Answer : (3) Reflect back the heat given by earth Explanation: It is because the night side of Earth will radiate infra-red radiation (heat) back into space. When there is cloud cover, the clouds act like a blanket and trap the heat close to the ground just like a blanket traps heat close to our body.

Cloudy nights are warmer compared nights, because clouds mainly (1) absorb heat from the atmosphere send it towards earth (2) prevent cold waves from the sky descending on earth (3) reflect back the heat given by earth (4) produce heat and radiate it toward earth

Description : Cloudy nights are warmer compared nights, because clouds mainly (1) absorb heat from the atmosphere send it towards earth (2) prevent cold waves from the sky descending on earth (3) reflect back the heat given by earth (4) produce heat and radiate it toward earth

Last Answer : reflect back the heat given by earth

Centigrade and Fahrenheit temperatures are the same at – (1) 32° (2) 40° (3) -273° (4) -40°

Description : Centigrade and Fahrenheit temperatures are the same at – (1) 32° (2) 40° (3) -273° (4) -40°

Last Answer : (4) -40° Explanation: There is one point on the Fahrenheit and Celsius scales where the temperatures in degrees are equal. That is -400 Celsius or Fahrenheit.

Centigrade and Fahrenheit temperatures are the same at (1) 32° (2) 40° (3) –273° (4) –40°

Description : Centigrade and Fahrenheit temperatures are the same at (1) 32° (2) 40° (3) –273° (4) –40° 

Last Answer : –40°

A hot body will radiate heat most rapidly, if its surface is (A) White & rough (B) Black & rough (C) White & polished (D) Black & polished

Description : A hot body will radiate heat most rapidly, if its surface is (A) White & rough (B) Black & rough (C) White & polished (D) Black & polished

Last Answer : (B) Black & rough

steam distillation, the (A) Temperature is 100°C(B) Temperature is more than 100° C (C) Product must be immiscible with water (D) Temperature is higher than the boiling point of either component

Description : steam distillation, the (A) Temperature is 100°C(B) Temperature is more than 100° C (C) Product must be immiscible with water (D) Temperature is higher than the boiling point of either component

Last Answer : (C) Product must be immiscible with water

Water always boils when its (A) Temperature reaches 100° C (B) Vapour pressure equals 76 cm of Hg (C) Saturated vapour pressure equals the external pressure on its surface (D) Saturated vapour pressure is less than the atmospheric pressure

Description : Water always boils when its (A) Temperature reaches 100° C (B) Vapour pressure equals 76 cm of Hg (C) Saturated vapour pressure equals the external pressure on its surface (D) Saturated vapour pressure is less than the atmospheric pressure

Last Answer : (C) Saturated vapour pressure equals the external pressure on its surface

When will a hot body radiate maximum energy? -General Knowledge

Description : When will a hot body radiate maximum energy? -General Knowledge

Last Answer : answer:

When will a hot body radiate maximum energy? -General Knowledge

Description : When will a hot body radiate maximum energy? -General Knowledge

Last Answer : answer:

When will a hot body radiate maximum energy?

Description : When will a hot body radiate maximum energy?

Last Answer : If its surface is black and rough

The cloudy nights are warmer compared to clear nights (without clouds) during winter days. This is because: (A) clouds radiate heat towards the earth (B) clouds prevent cold wave from the sky, descend on earth (C) clouds prevent escaping of the heat radiation from the earth (D) clouds being at great heights from earth absorb heat from the sun and send towards the earth

Description : The cloudy nights are warmer compared to clear nights (without clouds) during winter days. This is because: (A) clouds radiate heat towards the earth (B) clouds prevent cold wave from the sky, ... (D) clouds being at great heights from earth absorb heat from the sun and send towards the earth

Last Answer : (C) clouds prevent escaping of the heat radiation from the earth

The reduced bearing of a line is N 87° W. Its whole circle bearing is (A) 87° (B) 273° (C) 93° (D) 3°

Description : The reduced bearing of a line is N 87° W. Its whole circle bearing is (A) 87° (B) 273° (C) 93° (D) 3°

Last Answer : (B) 273°

Bence-Jones protein precipitates at (A) 20°–40° C (B) 40–-60° C (C) 60°–80° C (D) 80°–100° C

Description : Bence-Jones protein precipitates at (A) 20°–40° C (B) 40–-60° C (C) 60°–80° C (D) 80°–100° C

Last Answer : B

The fields surrounding the antenna do not collapse their energy back into the antenna but rather radiate it out in space

Description : The fields surrounding the antenna do not collapse their energy back into the antenna but rather radiate it out in space

Last Answer : radiation field

When heated from 0° to 10°C volume of a given mass of water will - (1) Increase gradually (2) Decrease gradually (3) Increase and after will decrease (4) Decrease and after will increase

Description : When heated from 0° to 10°C volume of a given mass of water will - (1) Increase gradually (2) Decrease gradually (3) Increase and after will decrease (4) Decrease and after will increase

Last Answer : (4) Decrease and after will increase

The temperature at which both the Fahrenheit and Centigrade scales have the same value is – (1) -60° (2) -40° (3) -20° (4) 0°

Description : The temperature at which both the Fahrenheit and Centigrade scales have the same value is – (1) -60° (2) -40° (3) -20° (4) 0°

Last Answer : (2) -40° Explanation: The temperature when both the Celsius and Fahrenheit scales are the same is -40 degrees.

__________ temperature scale assigns 0° to the 'ice point' and 80° to the 'steam point'. (A) Celsius (B) Rankine (C) Reaumur (D) Fahrenheit

Description : __________ temperature scale assigns 0° to the 'ice point' and 80° to the 'steam point'. (A) Celsius (B) Rankine (C) Reaumur (D) Fahrenheit

Last Answer : (C) Reaumur

Ice point' is designated on Fahrenheit temperature scale by (A) 0° (B) 32° (C) 62° (D) 212°

Description : Ice point' is designated on Fahrenheit temperature scale by (A) 0° (B) 32° (C) 62° (D) 212°

Last Answer : (B) 32°

The datum temperature for maturity by Plowman, is (A) 23°C (B) 0° (C) - 5.6°C (D) - 11.7°C

Description : The datum temperature for maturity by Plowman, is (A) 23°C (B) 0° (C) - 5.6°C (D) - 11.7°C

Last Answer : (C) - 5.6°C

Why does ETA radiate so much terror?

Description : Why does ETA radiate so much terror?

Last Answer : Because they’re basically terrorists, and rather prolific ones at that? Like any other group like that some view them as freedom fighters, some view them as terrorists.

where does the kidney hurt, where does the pain radiate?

Description : Where exactly does the kidney hurt? Can he believe that only a man's waist hurts? 

Last Answer : To my knowledge, kidney pain occurs above the buttocks and around the spine on 2 sides of the spine. It's easy to confuse it with other low back pain, but if you have something with your kidneys ... pain usually occurs as a result of movement, and kidney pain also occurs by tapping the waist.   

Does a lighted mouse radiate?

Description : We have a new mouse at home on a PC that glows red and in the evening it lights up half the room. Can't the light from the mouse radiate something when used in the body?

Last Answer : I have been working on a PC for several years and my hands are working. And I have a damn very luminous rat.

A disadvantage of using a trap antenna. A. It will radiate harmonics B. It can only be used for single-bad operation C. It is too sharply directional at lower frequencies D. It must be neutralized

Description : A disadvantage of using a trap antenna. A. It will radiate harmonics B. It can only be used for single-bad operation C. It is too sharply directional at lower frequencies D. It must be neutralized

Last Answer : A. It will radiate harmonics

To radiate power efficiently, a long-wire antenna must have what minimum overall length?

Description : To radiate power efficiently, a long-wire antenna must have what minimum overall length?

Last Answer : One-half wavelength.

Short-circuited stubs are preferred to open-circuited stubs because thelatter are a. more difficult to make an connect b. made of a transmission line with a different characteristic impedance c. liable to radiate

Description : Short-circuited stubs are preferred to open-circuited stubs because thelatter are a. more difficult to make an connect b. made of a transmission line with a different characteristic impedance c. liable to radiate

Last Answer : c. liable to radiate

Choose the most appropriate statement (A) An antenna can radiate only HF signals

Description : Choose the most appropriate statement (A) An antenna can radiate only HF signals (B) An antenna can radiate and receive HF signals (C) An antenna can receive only HF signals (D) An antenna can receive and transmit simultaneously HF signals

Last Answer : Choose the most appropriate statement (A) An antenna can radiate only HF signals (B) An antenna can radiate and receive HF signals (C) An antenna can receive only HF signals (D) An antenna can receive and transmit simultaneously HF signals

Why do sine and cosine have values at 90° and 0°?

Description : Why do sine and cosine have values at 90° and 0°?

Last Answer : There is no premise that a trigonometric function can only be applied in a right triangle. How would it be possible to talk about trigonometric functions of angles greater than 180? Sine and cosine are simply ... projection, its cosine is zero. Similarly, for the sine of a 90 degree angle being 1.

The angle of minimum deviation of an equiangular prism, having a refractive index of 1.732 is (a) 60° (b) 30° (c) 45° (d) 0°

Description : The angle of minimum deviation of an equiangular prism, having a refractive index of 1.732 is (a) 60° (b) 30° (c) 45° (d) 0°

Last Answer : Ans:(a)

The degree measure of Prime Meridian is - (1) 90° (2) 180° (3) 0° (4) 360°

Description : The degree measure of Prime Meridian is - (1) 90° (2) 180° (3) 0° (4) 360°

Last Answer : (3) 0° Explanation: A prime meridian is a meridian (a line of longitude) in a geographic coordinate system at which longitude is de fined to be 0°.

What is the International Date Line? (1) It is the equator (2) It is the 0° longitude (3) It is the 90° east longitude (4) It is the 180° longitude

Description : What is the International Date Line? (1) It is the equator (2) It is the 0° longitude (3) It is the 90° east longitude (4) It is the 180° longitude

Last Answer : (4) It is the 180° longitude Explanation: The International Date Line (IDL) is an imaginary line on the surface of the Earth, that runs from the north to the south pole and demarcates ... Ocean, roughly following the 180° longitude but it deviates to pass around some territories and island groups.

Indian Standard Time relates to – (1) 75.5° E longitude (2) 82.5° E longitude (3) 90.5° E longitude (4) 0° longitude

Description : Indian Standard Time relates to – (1) 75.5° E longitude (2) 82.5° E longitude (3) 90.5° E longitude (4) 0° longitude

Last Answer : (2) 82.5° E longitude Explanation: Indian Standard Time is calculated on the basis of 82.5°E longitude, from a clock tower in Mirzapur (25.15°N 82.58°E) (near Allahabad in the state of Uttar Pradesh) which is nearly on the corresponding longitude reference line.

In the illustrated circuit, what is the phase relationship of the amplifier output compared to the input? EL-0022 A. 0° in-phase B. 180° out of phase C. phase angle of the input divided by power factor D. unable to determine without the value of the bias voltage

Description : In the illustrated circuit, what is the phase relationship of the amplifier output compared to the input? EL-0022 A. 0° in-phase B. 180° out of phase C. phase angle of the input divided by power factor D. unable to determine without the value of the bias voltage

Last Answer : Answer: B

When paralleling two alternators, the synchronizing lamps remain lit as the synchroscope pointer approaches the 0°. This indicates the _____________. A. incoming alternator is running too fast B. alternator voltages are 180 degrees apart C. synchroscope is defective or broken D. alternator power factors are in phase

Description : When paralleling two alternators, the synchronizing lamps remain lit as the synchroscope pointer approaches the 0°. This indicates the _____________. A. incoming alternator is running too fast B. alternator ... apart C. synchroscope is defective or broken D. alternator power factors are in phase

Last Answer : Answer: C

When paralleling two alternators the synchronizing lamps grow dim and are totally darkened as the synchroscope pointer approaches the 0° position. This indicates the ____________. A. alternator voltages are 180° apart B. incoming alternator is running too fast C. incoming alternator is in phase with the bus voltage D. synchroscope pointer is defective or broken

Description : When paralleling two alternators the synchronizing lamps grow dim and are totally darkened as the synchroscope pointer approaches the 0° position. This indicates the ____________. A. alternator voltages ... alternator is in phase with the bus voltage D. synchroscope pointer is defective or broken

Last Answer : Answer: C

You are attempting to parallel two AC generators and the synchroscope pointer stops at a position other than 0°. If you close the circuit breaker at this moment _____________. A. the incoming machine will accept all of the load B. the incoming machine will trip out on low voltage release C. a hazardous condition will be created by the cross current between the machines D. a hazardous condition will be created by the incoming machine being at a higher frequency than the bus

Description : You are attempting to parallel two AC generators and the synchroscope pointer stops at a position other than 0°. If you close the circuit breaker at this moment _____________. A. the incoming ... hazardous condition will be created by the incoming machine being at a higher frequency than the bus

Last Answer : Answer: C

You are paralleling two alternators. The synchronizing lamps grow dim and are totally darkened as the synchroscope pointer approaches the 0° position. This indicates that the ____________. A. alternator voltages are 180° apart B. circuit breaker can be closed C. incoming alternator is running too slowly D. synchroscope is defective or broken

Description : You are paralleling two alternators. The synchronizing lamps grow dim and are totally darkened as the synchroscope pointer approaches the 0° position. This indicates that the ____________. A. alternator ... be closed C. incoming alternator is running too slowly D. synchroscope is defective or broken

Last Answer : Answer: B

You are attempting to parallel two AC generators and the synchroscope pointer stops at a position other than 0° prior to closing the circuit breaker. This indicates ___________. A. the frequency of the incoming machine is the same as the bus frequency B. the incoming machine is in phase with the bus, but the frequency is not the same C. the circuit breaker may be closed after breaker has been reset D. there is an existing cross current between generators

Description : You are attempting to parallel two AC generators and the synchroscope pointer stops at a position other than 0° prior to closing the circuit breaker. This indicates ___________. A. the frequency of ... be closed after breaker has been reset D. there is an existing cross current between generators

Last Answer : Answer: A

What is the orbit inclination of geostationary satellites? A. 0° B. 10° C. 20° D. 30°

Description : What is the orbit inclination of geostationary satellites? A. 0° B. 10° C. 20° D. 30°

Last Answer : A. 0°

In vibration isolation system, if ω/ωn, then the phase difference between the transmitted force and the disturbing force is A 0° B 90° C 180° D 270°

Description : In vibration isolation system, if ω/ωn, then the phase difference between the transmitted force and the disturbing force is A 0° B 90° C 180° D 270°

Last Answer : C 180°

In vibration isolation system, if ω/ω n > 1, then the phase difference between the transmitted force and the disturbing force is A. 0° B. 90° C. 180° D. 270°

Description : In vibration isolation system, if ω/ω n > 1, then the phase difference between the transmitted force and the disturbing force is A. 0° B. 90° C. 180° D. 270°

Last Answer : C. 180°

In vibration isolation system, if ω/ω n , then the phase difference between the transmitted force and the disturbing force is a) 0° b) 90° c) 180° d) 270°

Description : In vibration isolation system, if ω/ω n , then the phase difference between the transmitted force and the disturbing force is a) 0° b) 90° c) 180° d) 270°

Last Answer : c) 180°