Is solar energy radiated?

Is solar energy radiated?
by

1 Answer

Answer :

Yes, among other ways, solar energy is radiated. That is whatheats up the Earth and the other planets, mostly.
by
selected by

Related questions

Higher concentration of CO2 in atmosphere (A) Allows visible solar radiation (ultraviolet) of short wave-length to pass through (B) Reflects and absorbs the longer wavelength (infra-red) radiations (C) Prevents solar heat being radiated out completely, resulting in 'heat trap' i.e., global warming (D) All (A), (B) and (C)

Description : Higher concentration of CO2 in atmosphere (A) Allows visible solar radiation (ultraviolet) of short wave-length to pass through (B) Reflects and absorbs the longer wavelength (infra-red) radiations (C) Prevents solar heat being ... in 'heat trap' i.e., global warming (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Which of the following reaction is the main cause of energy radiated from Sun? (1) Nuclear fission (2) Nuclear fusion (3) Chemical reaction (4) Diffusion reaction

Description : Which of the following reaction is the main cause of energy radiated from Sun? (1) Nuclear fission (2) Nuclear fusion (3) Chemical reaction (4) Diffusion reaction

Last Answer : (2) Nuclear fusion Explanation: The Sun is a main-sequence star, and thus generates its energy bynuclear fusion of hydrogen nuclei into helium. In its core, the Sunfuses 620 million metric tons of hydrogen each second.

How will you increase the gain of an antenna? A. By adding several antennas in parallel B. By focusing the radiated energy in one desired direction C. By making antenna rods thicker D. By making the antenna size larger

Description : How will you increase the gain of an antenna? A. By adding several antennas in parallel B. By focusing the radiated energy in one desired direction C. By making antenna rods thicker D. By making the antenna size larger

Last Answer : B. By focusing the radiated energy in one desired direction

What do you call the energy that was not radiated into space or completely transmitted? A. Incident waves B. Captured waves C. Standing waves D. Modulated waves

Description : What do you call the energy that was not radiated into space or completely transmitted? A. Incident waves B. Captured waves C. Standing waves D. Modulated waves

Last Answer : C. Standing waves

Energy that has neither been radiated into space nor completely transmitted. A. Captured waves B. Incident waves C. Standing waves D. Modulated waves

Description : Energy that has neither been radiated into space nor completely transmitted. A. Captured waves B. Incident waves C. Standing waves D. Modulated waves

Last Answer : C. Standing waves

The energy radiated from a surface Q at absolute temperature T is related as (A) Q ∝ T 2 (B) Q ∝ T 4 (C) Q ∝ T 3 (D) None of these

Description : The energy radiated from a surface Q at absolute temperature T is related as (A) Q ∝ T 2 (B) Q ∝ T 4 (C) Q ∝ T 3 (D) None of these

Last Answer : (B) Q ∝ T

The atmosphere near the earth’s surface is “heated from below.” Which of the following does not significantly contribute to this heating -----------? A. Conduction of heat upward from a hot surface B. Convection from a hot surface C. Absorption of infrared energy that has been radiated from the surface D. Heat energy from the earth’s interior (Answer)

Description : The atmosphere near the earth's surface is heated from below. Which of the following does not significantly contribute to this heating -----------? A. Conduction of heat upward from a ... infrared energy that has been radiated from the surface D. Heat energy from the earth's interior (Answer)

Last Answer : D. Heat energy from the earth’s interior (Answer)

What characteristic(s) of radiated energy is (are) altered to achieve electronic scanning?

Description : What characteristic(s) of radiated energy is (are) altered to achieve electronic scanning?

Last Answer : Frequency or phase.

What is the polarization of the energy radiated by a vertical slot?

Description : What is the polarization of the energy radiated by a vertical slot?

Last Answer : Horizontal.

It is the ratio of the radiated to the reflected energy:

Description : It is the ratio of the radiated to the reflected energy:

Last Answer : Radiation efficiency

What process produces most of the energy that is radiated by the Sun? w) gravitational contraction x) chemical combustion y) nuclear fusion z) nuclear fission

Description : What process produces most of the energy that is radiated by the Sun? w) gravitational contraction x) chemical combustion y) nuclear fusion z) nuclear fission

Last Answer : ANSWER: Y -- NUCLEAR FUSION

To develop the correct mathematical description of the distribution of radiated energy of a blackbody with respect to wavelength for a given temperature, Planck found it necessary to assume that the molecular oscillators of the blackbody emitted and absorbed: w) no radiant energy x) radiant energy in discrete units or quanta y) radiant energy in a continuous form z) none of the above.

Description : To develop the correct mathematical description of the distribution of radiated energy of a blackbody with respect to wavelength for a given temperature, Planck found it necessary to assume that the molecular ... units or quanta y) radiant energy in a continuous form z) none of the above.

Last Answer : ANSWER: X -- RADIANT ENERGY IN DISCRETE UNITS OR QUANTA

The potential difference across a 4 ohm resistor is 20 volts. Assuming that all of the energy dissipated by this resistor is in the form of heat, how many joules of heat are radiated in 10 seconds?

Description : The potential difference across a 4 ohm resistor is 20 volts. Assuming that all of the energy dissipated by this resistor is in the form of heat, how many joules of heat are radiated in 10 seconds?  

Last Answer : ANSWER: 1000 JOULES

The energy radiated by Sun on a bright Sunny day is approximately:

Description : The energy radiated by Sun on a bright Sunny day is approximately:  (A) 700 W/m² (B) 800 W / m² (C) 1 kW / m² (D) 2 kW / m²

Last Answer : The energy radiated by Sun on a bright Sunny day is approximately: 1 kW / m²

What percent of the input energy is radiated by filament lamps ?

Description : What percent of the input energy is radiated by filament lamps ?  (1) 2 to 5 percent (2) 10 to 15 percent (3) 25 to 30 percent (4) 40 to 50 percent

Last Answer : less than 10 percentage

How many radiated tortoises are left?

Description : How many radiated tortoises are left?

Last Answer : What is the answer ?

what happened to the baby that radiated light that was introduced in the 1st episode in my hero academia?

Description : what happened to the baby that radiated light that was introduced in the 1st episode in my hero academia?

Last Answer : The baby that radiated light was baby All Might.

Which of the following asborbs part of the insolation and preserves earth's radiated heat? (1) Oxygen (2) Nitrogen (3) Water vapour (4) Carbon-dioxide

Description : Which of the following asborbs part of the insolation and preserves earth's radiated heat? (1) Oxygen (2) Nitrogen (3) Water vapour (4) Carbon-dioxide

Last Answer : (3) Water vapour Explanation: The amount of solar energy reaching the Earth is 70 percent. The surface of the Earth absorbs 51 percent of the insolation. Water vapor and dust account for ... directly to outer space). This radiant energy is re-radiated in the atmosphere horizontally and vertically.

Which of the following is most important for absorption of heat radiated from the Sun as well as from the Earth? (1) Carbon dioxide (2) Oxygen (3) Carbon monoxide (4) Nitrogen

Description : Which of the following is most important for absorption of heat radiated from the Sun as well as from the Earth? (1) Carbon dioxide (2) Oxygen (3) Carbon monoxide (4) Nitrogen

Last Answer : (1) Carbon dioxide Explanation: Carbon dioxide is a green house gas that absorbs heat radiated from the Sun as well as re-radiated heat from the Earth's surface.

An antenna “efficiency” is computed by using one of the following equations. A. Efficiency = (radiation resistance / transmission resistance) B. Efficiency = (total resistance / radiation resistance) x 100% C. Efficiency = (effective radiated power / transmitter output) x 100% D. Efficiency = (radiation resistance / total resistance) x 100%

Description : An antenna efficiency is computed by using one of the following equations. A. Efficiency = (radiation resistance / transmission resistance) B. Efficiency = (total resistance / radiation resistance) x ... / transmitter output) x 100% D. Efficiency = (radiation resistance / total resistance) x 100%

Last Answer : D. Efficiency = (radiation resistance / total resistance) x 100%

The power fed to a two-bay turnstile antenna is 100 watts. If the antenna has a 2 dB power gain, what is the effective radiated power? A. 317 watts B. 158 watts C. 200 watts D. 400 watts

Description : The power fed to a two-bay turnstile antenna is 100 watts. If the antenna has a 2 dB power gain, what is the effective radiated power? A. 317 watts B. 158 watts C. 200 watts D. 400 watts

Last Answer : B. 158 watts

_____ of an antenna is a measure of how the antenna concentrates its radiated power in a given direction. A. Efficiency B. Power C. Gain D. Polarization

Description : _____ of an antenna is a measure of how the antenna concentrates its radiated power in a given direction. A. Efficiency B. Power C. Gain D. Polarization

Last Answer : C. Gain

If the radiated power increase 10.89 times, the antenna current increases by ______. A. 3.3 times B. 6.6 times C. 1.82 times D. 10.89 times

Description : If the radiated power increase 10.89 times, the antenna current increases by ______. A. 3.3 times B. 6.6 times C. 1.82 times D. 10.89 times

Last Answer : A. 3.3 times

What determines antenna polarization? A. The frequency of the radiated wave B. The direction of the radiated wave C. The direction of the magnetic field vector D. The direction of the electric field vector

Description : What determines antenna polarization? A. The frequency of the radiated wave B. The direction of the radiated wave C. The direction of the magnetic field vector D. The direction of the electric field vector

Last Answer : D. The direction of the electric field vector

If the antenna increases 3.3 times how much does the radiated power increase? A. 3.3 times B. 10.89 times C. 9.9 times D. 6.6 times

Description : If the antenna increases 3.3 times how much does the radiated power increase? A. 3.3 times B. 10.89 times C. 9.9 times D. 6.6 times

Last Answer : B. 10.89 times

In the American standard, the aural transmitter maximum radiated power is _____ of peak visual transmitter power. A. 10 % B. 30 % C. 20 % D. 40 %

Description : In the American standard, the aural transmitter maximum radiated power is _____ of peak visual transmitter power. A. 10 % B. 30 % C. 20 % D. 40 %

Last Answer : C. 20 %

What is the effective radiated power of a repeater with 200 watts transmitter power output, 4 dB feline loss, 4 dB duplexer and circulator loss, and 10 dB antenna gain? A. 317 W B. 2000 W C. 126 W D. 260 W

Description : What is the effective radiated power of a repeater with 200 watts transmitter power output, 4 dB feline loss, 4 dB duplexer and circulator loss, and 10 dB antenna gain? A. 317 W B. 2000 W C. 126 W D. 260 W

Last Answer : A. 317 W

In the European standard, the aurial transmitter maximum radiated power is ______ of peak visual transmitter power. A. 10% B. 30% C. 20% D. 40%

Description : In the European standard, the aurial transmitter maximum radiated power is ______ of peak visual transmitter power. A. 10% B. 30% C. 20% D. 40%

Last Answer : C. 20%

What is the effective radiated power of a repeater with 120 watts transmitter power output, 5 dB feedline loss, 4 dB duplexer and circulator loss, and 6 dB antenna gain? A. 601 W B. 240 W C. 60 W D. 379 W

Description : What is the effective radiated power of a repeater with 120 watts transmitter power output, 5 dB feedline loss, 4 dB duplexer and circulator loss, and 6 dB antenna gain? A. 601 W B. 240 W C. 60 W D. 379 W

Last Answer : C. 60 W

What is the effective radiated power of a repeater with 100 watts transmitter power output, 5 dB feedline loss, 4 dB duplexer and circulator loss, and 10 dB antenna gain? A. 800 W B. 126 W C. 12.5 W D. 1260 W

Description : What is the effective radiated power of a repeater with 100 watts transmitter power output, 5 dB feedline loss, 4 dB duplexer and circulator loss, and 10 dB antenna gain? A. 800 W B. 126 W C. 12.5 W D. 1260 W

Last Answer : B. 126 W

What is the effective radiated power of a repeater with 75 watts transmitter power output, 5 dB feedline loss, 4 dB duplexer and circulator loss, and 6 dB antenna gain? A. 37.6 W B. 237 W C. 150 W D. 23.7 W

Description : What is the effective radiated power of a repeater with 75 watts transmitter power output, 5 dB feedline loss, 4 dB duplexer and circulator loss, and 6 dB antenna gain? A. 37.6 W B. 237 W C. 150 W D. 23.7 W

Last Answer : A. 37.6 W

What is the effective radiated power of a repeater with 75 watts transmitter power output, 4 dB feedline loss, 3 dB duplexer and circulator loss, and 10 dB antenna gain? A. 600 W B. 75 W C. 18.75 W D. 150 W

Description : What is the effective radiated power of a repeater with 75 watts transmitter power output, 4 dB feedline loss, 3 dB duplexer and circulator loss, and 10 dB antenna gain? A. 600 W B. 75 W C. 18.75 W D. 150 W

Last Answer : D. 150 W

What is the effective radiated power of a repeater with 50 watts transmitter power output, 5 dB feedline loss, 4 dB duplexer and circulator loss, and 7 dB antenna gain? A. 300 W B. 315 W C. 31.5 W D. 69.9 W

Description : What is the effective radiated power of a repeater with 50 watts transmitter power output, 5 dB feedline loss, 4 dB duplexer and circulator loss, and 7 dB antenna gain? A. 300 W B. 315 W C. 31.5 W D. 69.9 W

Last Answer : C. 31.5 W

What is the effective radiated power of a repeater with 50 watts transmitter power output \, 4 dB feedline loss, 3 dB duplexer and circulator loss, and 6 dB antenna gain? A. 158 W B. 39.7 W C. 251 W D. 69.9 W

Description : What is the effective radiated power of a repeater with 50 watts transmitter power output \, 4 dB feedline loss, 3 dB duplexer and circulator loss, and 6 dB antenna gain? A. 158 W B. 39.7 W C. 251 W D. 69.9 W

Last Answer : B. 39.7 W

The product of antenna input power and the antenna power gain expressed in kW is called __. A. Effective Radiated Power (ERP) B. Effective Isotropic Radiated Power (EIRP) C. Radiated Power D. Transmit Power

Description : The product of antenna input power and the antenna power gain expressed in kW is called __. A. Effective Radiated Power (ERP) B. Effective Isotropic Radiated Power (EIRP) C. Radiated Power D. Transmit Power

Last Answer : A. Effective Radiated Power (ERP)

The product of the radiated RF power of a transmitter and the gain of the antenna system in a given direction relative to an isotropic radiator is called ____. A. Effective Radiated Power (ERP) B. Effective Isotropic Radiated Power (EIRP) C. Radiated Power D. Transmit Power

Description : The product of the radiated RF power of a transmitter and the gain of the antenna system in a given direction relative to an isotropic radiator is called ____. A. Effective Radiated Power (ERP) B. Effective Isotropic Radiated Power (EIRP) C. Radiated Power D. Transmit Power

Last Answer : B. Effective Isotropic Radiated Power (EIRP)

What is the meaning of forward power? A. The power traveling from the transmitter to the antenna. B. The power radiated from the top of an antenna system. C. The power produced during the positive half of an RF cycle. D. The power used to drive a linear amplifier.

Description : What is the meaning of forward power? A. The power traveling from the transmitter to the antenna. B. The power radiated from the top of an antenna system. C. The power produced during the positive half of an RF cycle. D. The power used to drive a linear amplifier.

Last Answer : A. The power traveling from the transmitter to the antenna.

What type of transmission is radiated from an aircraft’s radio altimeter antenna? A. An amplitude modulated continuous wave B. A pulse position modulated UHF signal C. A differential phase shift keyed UHF signal D. A frequency modulated continuous wave

Description : What type of transmission is radiated from an aircraft’s radio altimeter antenna? A. An amplitude modulated continuous wave B. A pulse position modulated UHF signal C. A differential phase shift keyed UHF signal D. A frequency modulated continuous wave

Last Answer : D. A frequency modulated continuous wave

What is the term for the ration of the radiation resistance of an antenna to the total resistance of the system? A. Effective radiated power B. Beamwidth C. Radiation conversion loss D. Antenna efficiency

Description : What is the term for the ration of the radiation resistance of an antenna to the total resistance of the system? A. Effective radiated power B. Beamwidth C. Radiation conversion loss D. Antenna efficiency

Last Answer : D. Antenna efficiency

Determine the effective radiated power of 20 kW TV broadcast transmitter whose antenna has a field gain of 2. A. 40 kW B. 80,000 watts C. 40,000 watts D. 8,000 watts

Description : Determine the effective radiated power of 20 kW TV broadcast transmitter whose antenna has a field gain of 2. A. 40 kW B. 80,000 watts C. 40,000 watts D. 8,000 watts

Last Answer : B. 80,000 watts

What is meant by the term radiation resistance for an antenna? A. The resistance in the trap coils to received signal B. An equivalent resistance that would dissipate the same amount of power as that radiated from an antenna C. The specific impedance of the antenna D. Losses in the antenna elements and feed line

Description : What is meant by the term radiation resistance for an antenna? A. The resistance in the trap coils to received signal B. An equivalent resistance that would dissipate the same amount of power as ... antenna C. The specific impedance of the antenna D. Losses in the antenna elements and feed line

Last Answer : B. An equivalent resistance that would dissipate the same amount of power as that radiated from an antenna

A transmitter supplies 8 kW to the antenna when it is unmodulated, determine the total radiated power when modulated at 90%. A. 5 kW B. 20 kW C. 15 kW D. 8.36 kW

Description : A transmitter supplies 8 kW to the antenna when it is unmodulated, determine the total radiated power when modulated at 90%. A. 5 kW B. 20 kW C. 15 kW D. 8.36 kW

Last Answer : D. 8.36 kW

What is meant by the term antenna efficiency? A. Efficiency = effective radiated power/transmitter output x 100% B. Efficiency = radiation resistance/ transmission resistance C. Efficiency = total resistance/radiation resistance x 100% D. Efficiency = radiation resistance/total resistance x 100%

Description : What is meant by the term antenna efficiency? A. Efficiency = effective radiated power/transmitter output x 100% B. Efficiency = radiation resistance/ transmission resistance C. Efficiency = total resistance/radiation resistance x 100% D. Efficiency = radiation resistance/total resistance x 100%

Last Answer : D. Efficiency = radiation resistance/total resistance x 100%

An increase in the effective power radiated by an antenna in a certain desired direction at the expense of power radiated in other directions. A. Antenna gain B. Antenna back lobe ration C. Antenna total ration D. Antenna efficiency

Description : An increase in the effective power radiated by an antenna in a certain desired direction at the expense of power radiated in other directions. A. Antenna gain B. Antenna back lobe ration C. Antenna total ration D. Antenna efficiency

Last Answer : A. Antenna gain

How much does the radiated power of an antenna increases if its current increased by 3.3 times? A. 6.6 times B. 3.3 times C. 10.89 times D. 9.9 times

Description : How much does the radiated power of an antenna increases if its current increased by 3.3 times? A. 6.6 times B. 3.3 times C. 10.89 times D. 9.9 times

Last Answer : C. 10.89 times

It is a measure of the microwave power radiated from an antenna as a function of angular direction from the antenna axis. A. Antenna pattern B. Polarization C. Beamwidth D. Sidelobes

Description : It is a measure of the microwave power radiated from an antenna as a function of angular direction from the antenna axis. A. Antenna pattern B. Polarization C. Beamwidth D. Sidelobes

Last Answer : C. Beamwidth

What is meant by antenna gain? A. The final amplifier gain minus the transmission line losses (including any phasing lines present) B. The ratio of the amount of power produced by the antenna compared to the output power of the transmitter C. The ratio of the signal in the backward direction D. The numeric ratio relating the radiated signal strength of an antenna to that of another antenna

Description : What is meant by antenna gain? A. The final amplifier gain minus the transmission line losses (including any phasing lines present) B. The ratio of the amount of power produced by the antenna ... D. The numeric ratio relating the radiated signal strength of an antenna to that of another antenna

Last Answer : D. The numeric ratio relating the radiated signal strength of an antenna to that of another antenna

ECE Board Exam March 1996 EIRP stands for _______________. A. effective isotropic refracted power B. effective and ideal radiated power C. effective isotropic reflected power D. effective isotropic radiated power

Description : ECE Board Exam March 1996 EIRP stands for _______________. A. effective isotropic refracted power B. effective and ideal radiated power C. effective isotropic reflected power D. effective isotropic radiated power

Last Answer : D. effective isotropic radiated power

What refers to the heating of the earth’s atmosphere not caused by direct sunlight but by infrared light radiated by the surface and absorbed mainly by atmospheric carbon dioxide?  A. Greenhouse effect  B. Global warming  C. Thermal rise effect  D. Ozone effect

Description : What refers to the heating of the earth’s atmosphere not caused by direct sunlight but by infrared light radiated by the surface and absorbed mainly by atmospheric carbon dioxide?  A. Greenhouse effect  B. Global warming  C. Thermal rise effect  D. Ozone effect

Last Answer : Greenhouse effect

When a wavefront is radiated into a waveguide, what happens to the portions of the wavefront that do not satisfy the boundary conditions?

Description : When a wavefront is radiated into a waveguide, what happens to the portions of the wavefront that do not satisfy the boundary conditions?

Last Answer : Decrease to zero.