ORO551 Renewable Energy Sources - IAT-1- MCQ

The ratio of the beam radiation flux falling on a tilted surface to that falling on a horizontal surface is called the

• Radiation shape factor

• Tilt factor

• Slope

• None of the choice

The angle made in the horizontal plane between the horizontal line due south and the projection of the normal to the surface on the horizontal plane is

• Hour angle

• Declination

• Surface azimuth angle

• Solar altitude angle

Which one of the following component is essential for Solar Thermal System?

• Solar Collector

• Solar PV Panel

• Anemometer

• None of the choice

What is the standard value of solar constant?

• 1 kW/ $m^2$

• 1.36 kW/ $m^2$

• 1.5 kW/ $m^2$

• 5 kW/ $m^2$

Which process is responsible for production of energy in the sun?

• Nuclear fusion reaction

• Nuclear fission reaction

• Exothermal chemical reaction

• All of the above

In evacuated tube collectors:

• Both conduction and convection losses are suppressed

• Only conduction losses are suppressed

• Only convection losses are suppressed

• Only radiation losses are suppressed

On the respective day of each month, the extraterrestrial daily radiation may be taken as equal to

• beam radiation at the location

• diffuse radiation at the location

• global radiation at the location

• monthly average, daily extraterrestrial radiation at the location

The percentage of the incoming radiation reflected back to space by the earth is:

• 10%

• 20%

• 30%

• 40%

When incoming solar radiation passes through the atmosphere of the earth:

• radiation of all wavelengths is absorbed uniformly by different type of molecules.

• different molecules selectively absorb the radiation of different wavelengths

• there is no absorption of radiation

Temperature on the sun is around ______________

• 575 – 600 K

• 7550 – 8000 K

• 4570 – 6000 K

• 5750 – 6000 K