Aqua ammonia is used as refrigerant in the following type of refrigeration system_________________?

Related Mcqs:

1. In vapor compression refrigeration system, refrigerant occurs as liquid between_________________?

   A. condenser and expansion valve
   B. compressor and evaporator
   C. expansion valve and evaporator
   D. compressor and condenser
   E. none of the above

2. In a refrigeration cycle, the flow of refrigerant is controlled by___________________?

   A. compressor
   B. condenser
   C. evaporator
   D. expansion valve
   E. all of the above

3. One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of ice_________________?

   A. in 1 hour
   B. in 1 minute
   C. in 24 hours
   D. in 12 hours
   E. in 10 hours

4. Ammonia-absorption refrigeration cycle requires__________________?

   A. very little work input
   B. maximum work input
   C. nearly same work input as for vapour compression cycle
   D. zero work input
   E. none of the above

5. In vapor compression cycle, the condition of refrigerant is high pressure saturated liquid________________?

   A. after passing through the condenser
   B. before passing through the condenser
   C. after passing through the expansion or thiottle valve
   D. before entering the expansion valve
   E. before entering the compressor

6. The moisture in a refrigerant is removed by___________________?

   A. evaporator
   B. safety relief valve
   C. dehumidifier
   D. driers
   E. expansion valve

7. In vapour compression cycle the condition of refrigerant is superheated vapour _____________________?

   A. after passing through the condenser
   B. before passing through the condenser
   C. after passing through the expansion or throttle valve
   D. before [entering the expansion valve
   E. before entering the compressor

8. In vapour compression cycle using NH3 as refrigerant, initial charge is filled at_________________?

   A. suction of compressor
   B. delivery of compressor
   C. high pressure side close to receiver
   D. low pressure side near receiver
   E. anywhere in the cycle

9. The coefficient of performance is the ratio of the refrigerant effect to the_________________?

   A. heat of compression
   B. work done by compressor
   C. enthalpy increase in compressor
   D. all of the above
   E. none of the above

10. One of the purposes of sub-cooling the liquid refrigerant is to________________?

    A. reduce compressor overheating
    B. reduce compressor discharge temperature
    C. increase cooling effect
    D. ensure that only liquid and not the vapour enters the expansion (throttling) valve
    E. none of the above