Domestic refrigerator working on vapour compression cycle uses the following type of expansion device____________________?

Related Mcqs:

1. The domestic refrigerator uses following type of compressor ____________________?

   A. centrifugal
   B. axial
   C. miniature sealed unit
   D. piston type reciprocating
   E. none of the above

2. 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

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. The higher temperature in vapour compression cycle occurs at____________________?

   A. receiver
   B. expansion valve
   C. evaporator
   D. condenser discharge
   E. compressor discharge

5. The value of COP in vapour compression cycle is usually__________________?

   A. always less than unity
   B. always more than unity
   C. equal to unity
   D. any one of the above
   E. none of the above

6. 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

7. Where does the lowest temperature occur in a vapour compression cycle ?

   A. condenser
   B. evaporator
   C. compressor
   D. expansion valve
   E. receiver

8. 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

9. The vapor compression refrigerator employs the following cycle_________________?

   A. Rankine
   B. Carnot
   C. Reversed Rankine
   D. Brayton
   E. Reversed Carnot

10. The bank of tubes at the back of domestic refrigerator are _________________?

    A. condenser tubes
    B. evaporator tubes
    C. refrigerant cooling tubes
    D. capillary tubes
    E. throttling device