The refrigerant for a refrigerator should have ___________________?

Related Mcqs:

1. In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity of refrigerant for system is_____________________?

   A. less than 2 kg
   B. more than or equal to 3.65 kg
   C. more than 10 kg
   D. there is no such consideration
   E. pone of the above

2. In vapor compression cycle the condition off refrigerant is dry saturated vapor________________?

   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

3. In vapour compression cycle, the conditii of refrigerant is saturated liquid________________?

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

4. 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

5. The vapor pressure of refrigerant should be_________________?

   A. lower than atmospheric pressure
   B. higher than atmospheric pressure
   C. equal to atmospheric pressure
   D. could be anything
   E. none of the above

6. In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be_________________?

   A. high, of the order of 25°
   B. as low as possible (3 to 11°C)
   C. zero
   D. any value
   E. none of the above

7. Accumulators should have adequate volume to store refrigerant charge at least_________________?

   A. 10%
   B. 25%
   C. 50%
   D. 75%
   E. 100%

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

   A. compression
   B. direct
   C. indirect
   D. absorption
   E. none of the above

9. 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

10. In a vapor compression cycle, the refrigerant immediately after expansion valve is___________________?

    A. liquid
    B. sub-cooled liquid
    C. saturated liquid
    D. wet vapour
    E. dry vapour