Questions and answers for exam Preparation

MCQs

Total Questions : 207 | Page 8 of 21 pages

Question 71. What is a solar collector?

A system to collect heat by absorbing sunlight
A system to collect rainwater using sunlight
A system to collect electricity by using sunlight
A device to reflect sunlight back

Discuss Question

Answer: Option A. -> A system to collect heat by absorbing sunlight
Answer: (a).A system to collect heat by absorbing sunlight

Question 72. Why is a transparent cover used in a flat plate collector?

To maximize transmission of the incident sunlight into the box
To minimize transmission of the incident sunlight into the box
To entirely reflect the incident sunlight back
To ensure partial transmission of the incident sunlight into the box

Discuss Question

Answer: Option A. -> To maximize transmission of the incident sunlight into the box
Answer: (a).To maximize transmission of the incident sunlight into the box

Question 73. Aperture area of a solar collector is roughly equal to _______

Coolant area
Generator area
Absorber area
System area

Discuss Question

Answer: Option C. -> Absorber area
Answer: (c).Absorber area

Question 74. What are the components of a flat plate collector?

Flat box, a plate with reflective coating and fluid circulation passageways, an opaque cover, a circulating fluid
Flat box, a dark coloured plate with fluid circulation passageways, an opaque, a circulating fluid
Flat box, a dark coloured plate with fluid circulation passageways, a transparent cover
Flat box, a dark coloured plate fluid circulation passageways, a transparent cover, a circulating fluid

Discuss Question

Answer: Option D. -> Flat box, a dark coloured plate fluid circulation passageways, a transparent cover, a circulating fluid
Answer: (d).Flat box, a dark coloured plate fluid circulation passageways, a transparent cover, a circulating fluid

Question 75. What is aperture area in a solar collector?

Area of the system
Area in the receiver that receives the solar radiation
Area occupied by the system after installation
Cross-sectional area of the receiver

Discuss Question

Answer: Option B. -> Area in the receiver that receives the solar radiation
Answer: (b).Area in the receiver that receives the solar radiation

Question 76. Solar thermal energy is used to perform vapour absorption refrigeration.

True
False
May be True or False
Can't say

Discuss Question

Answer: Option A. -> True
Answer: (a).True

Question 77. What are the three heat exchangers used in an absorption type refrigeration?

Compressor, absorber and generator
Absorber, generator and adsorber
Absorber, regenerating intermediate heat exchanger and generator
Compressor, generator and adsorber

Discuss Question

Answer: Option C. -> Absorber, regenerating intermediate heat exchanger and generator
Answer: (c).Absorber, regenerating intermediate heat exchanger and generator

Question 78. Freon is a trade for a family of haloalkane refrigerants.