Questions and answers for exam Preparation

MCQs

Total Questions : 150 | Page 10 of 15 pages

Question 91. When is the power density of the absorbing surface equal to the incident sunlight?

Absorbing surface and incident sunlight are perpendicular to each other
Absorbing surface and incident sunlight are parallel to each other
Absorbing surface and incident sunlight are inclined at an acute angle to each other
Absorbing surface and incident sunlight are inclined at an obtuse angle to each other

Discuss Question

Answer: Option D. -> Absorbing surface and incident sunlight are inclined at an obtuse angle to each other
Answer: (d).Absorbing surface and incident sunlight are inclined at an obtuse angle to each other

Question 92. For a fixed receiver, incident power density and received power density are always equal.

True
False
May be True or False
Can't say

Discuss Question

Answer: Option B. -> False
Answer: (b).False

Question 93. What is direct solar radiation?

Radiation scattered by molecules
Radiation reflected from an obstacle
Radiation traveling on a straight line from sun to earth
Sum of diffused and reflected radiation energies

Discuss Question

Answer: Option C. -> Radiation traveling on a straight line from sun to earth
Answer: (c).Radiation traveling on a straight line from sun to earth

Question 94. Which of the following is tried to maximized in tilted receivers (panels)?

Direct radiation
Diffused radiation
Reflected radiation
Diffracted radiation

Discuss Question

Answer: Option A. -> Direct radiation
Answer: (a).Direct radiation

Question 95. What is diffused solar radiation?

Sum of direct and reflected radiation energies
Radiation reflected from an obstacle
Radiation traveling on a straight line from sun to earth
Radiation scattered by molecules

Discuss Question

Answer: Option D. -> Radiation scattered by molecules
Answer: (d).Radiation scattered by molecules

Question 96. What is intrinsic moisture content in biomass?

Moisture content of the material with the moisture content in atmosphere
Moisture content of the material without the influence of weather effects
Moisture content of the material with the influence of weather effects
Moisture content of the material without the moisture content in atmosphere

Discuss Question

Answer: Option B. -> Moisture content of the material without the influence of weather effects
Answer: (b).Moisture content of the material without the influence of weather effects

Question 97. What is calorific value (CV) of a material?

Amount of energy content or heat value released by the material when burnt in air
Amount of energy content or heat value released by the material when burnt in water
Amount of energy content or heat value absorbed by the material when burnt in air
Amount of energy content or heat value absorbed by the material when burnt in water

Discuss Question

Answer: Option A. -> Amount of energy content or heat value released by the material when burnt in air
Answer: (a).Amount of energy content or heat value released by the material when burnt in air

Question 98. What is extrinsic moisture content?

Moisture content of the material with the moisture content in atmosphere
Moisture content of the material without the influence of weather effects
Moisture content of the material with the influence of weather effects
Moisture content evaporated to the atmosphere

Discuss Question

Answer: Option C. -> Moisture content of the material with the influence of weather effects
Answer: (c).Moisture content of the material with the influence of weather effects

Question 99. What is the volatile matter in biomass?

The content in biomass that remains after heating
The content in biomass that is driven off as gas by heating
The biomass that is being heated
The moisture content in biomass

Discuss Question

Answer: Option B. -> The content in biomass that is driven off as gas by heating
Answer: (b).The content in biomass that is driven off as gas by heating

Question 100. Which of the following is a problem for using biomass as a source of energy?