Top 80+ Solved Electric Energy Generation Utilization and Conservation MCQ Questions Answer
Q. For normal reading the illumination level required is around
a. 20-40 lumens/m2
b. 60-100 lumens/m2
c. 200-300 lumens/m2
d. 400-500 lumens/m2
Q. Which of the following is not the type of refrigerant?
a. organic refrigerants
b. inorganic refrigerants
c. azeotrope refrigerants
d. halo-helium refrigerants
Q. The refrigerants which are first cooled by refrigerants and then used for cooling purposes are known as refrigerants.
a. secondary, primary
b. primary, secondary
c. tertiary, primary
d. secondary, tertiary
Q. From the following refrigerants, which is one of the most stable refrigerants?
a. ammonia
b. r – 12
c. carbon dioxide
d. sulphur dioxide
Q. In the presence of which of the following, Sulphur dioxide becomes corrosive?
a. r – 12
b. ammonia
c. water
d. carbon dioxide
Q. is widely used in large industrial plants such as cold storages and ice plants as per the cost basis.
a. r – 40
b. r – 717
c. r – 744
d. r – 764
Q. Where is the reciprocating compressor mostly suitable?
a. small displacements and low condensing pressures
b. small displacements and high condensing pressures
c. large displacements and low condensing pressures
d. large displacements and high condensing pressures
Q. Which of the following is the condition to use two compressors in the refrigeration system?
a. the desired temperature is 3°c
b. the desired temperature is -3°c
c. the desired temperature is -50°c
d. the desired temperature is -5°c
Q. Centrifugal compressors are used to handle volume of refrigerant.
a. small
b. medium
c. large
d. very large
Q. Which of the following cooling towers possess maximum heat transfer from air to water?
a. natural draft
b. mechanical draft
c. natural and mechanical draft
d. atmospheric draft
Q. Which of the following is true about the optimum effective temperature for human comfort?
a. same in winter and summer
b. not dependent on season
c. lower in winter than in summer
d. higher in winter than in summer
Q. When the heat stored in the body is the human body feels comfortable.
a. zero
b. infinite
c. positive
d. negative
Q. Room air conditioners and packaged units are examples of
a. direct expansion systems
b. indirect expansion systems
c. chilled water systems
d. indirect contraction systems