Vapour Absorption Refrigeration System - MCQs with Answers

Vapour Absorption Refrigeration System - MCQs with Answers

Q1. The mechanical work required to run vapour absorption system

a. is more than the mechanical work required to run vapour compression system
b. is less than the mechanical work required to run vapour compression system
c. is similar to the mechanical work required to run vapour compression system
d. cannot say

View Answer / Hide Answer

Q2. The compressor in the vapour compression system id replaced by

a. an absorber
b. a generator
c. an absorber-generator
d. none of the above

View Answer / Hide Answer

Q3. What is the condition of refrigerant at the exit of evaporator in aqua-ammonia absorption system?

a. low pressure ammonia vapour
b. high pressure ammonia vapour
c. low pressure strong vapour mixture of ammonia and water
d. high pressure strong vapour mixture of ammonia and water

View Answer / Hide Answer

Q4. What is the process carried out in generator of vapour absorption refrigeration cycle?

a. weak solution of ammonia in water is heated
b. strong solution of ammonia in water is heated
c. only water is heated and heat is given to the ammonia to form its vapour
d. none of the above

View Answer / Hide Answer

Q5. In absorber of aqua-ammonia absorption refrigeration system

a. strong solution is taken in and weak solution is given out
b. weak solution is taken in and strong solution is given out
c. the ammonia vapour from strong solution is taken out and made it a weak solution
d. none of the above

View Answer / Hide Answer

Q6. What is the purpose of analyser-rectifire in aqua-ammonia absorption system?

a. to absorb ammonia into the water
b. to remove water vapour out from ammonia after generator
c. to exchange heat between weak solution and strong solution
d. none of the above

View Answer / Hide Answer

Q7. What is an advantage using analyser-rectifier in aqua-ammonia absorption system?

a. it makes ammonia-water solution strong
b. it prevents expansion valve from blocking due to ice formation
c. both a. and b.
d. none of the above

View Answer / Hide Answer

Q8. For a same pressure the saturation temperature of ammonia is

a. higher than the saturation temperature of water
b. lower than the saturation temperature of water
c. same as the saturation temperature of water
d. none of the above

View Answer / Hide Answer

Q9. Which type of energy is required to expend in vapour absorption refrigeration system?

a. high-grade energy
b. low-grade energy
c. medium-grade energy
d. none of the above

View Answer / Hide Answer

Q10. The vapour absorption refrigeration system is

a. more noisy than the vapour compression refrigeration system
b. more silent than the vapour compression refrigeration system
c. equally noisy as the vapour compression refrigeration system
d. it depends upon plant capacity

View Answer / Hide Answer

Q11. For the same capacity of plant, the COP of the vapour absorption refrigeration system is

a. lower than the COP of the vapour compression refrigeration system
b. higher than the COP of the vapour compression refrigeration system
c. same as the COP of the vapour compression refrigeration system
d. cannot say

View Answer / Hide Answer