The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is_________________?

Related Mcqs:

1. In a flooded evaporator refrigerator, an accumulator at suction of compressor is used to___________________?

   A. collect liquid refrigerant and prevent it from going to compressor
   B. detect liquid in vapour
   C. superheat the vapour
   D. collect vapours
   E. increase refrigeration effect

2. 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

3. The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature, influences the value of C.O.P_____________________?

   A. more
   B. less
   C. equally.
   D. unpredictable
   E. none of the above

4. A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of- 23°C. The Cannot coefficient of performance of cycle will be_________________?

   A. 0.2
   B. 1.2
   C. 5
   D. 6
   E. 10

5. The C.O.P of a refrigeration cycle with increase in evaporator temperature, keeping condenser temperature constant, will______________________?

   A. increase
   B. decrease
   C. remain unaffected
   D. may increase or decrease depending on the type of refrigerant used
   E. unpredictable

6. The C.O.P. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature constant, will__________________?

   A. increase
   B. decrease
   C. may increase or decrease depending on the type of refrigerant used
   D. remain unaffected
   E. unpredictable

7. One ton of the refrigeration is_________________?

   A. the standard unit used in refrigeration problems
   B. the cooling effect produced by melting 1 ton of ice
   C. the refrigeration effect to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours
   D. the refrigeration effect to produce 1 ton of ice at NTP conditions
   E. the refrigeration effect to produce 1 ton of ice in 1 hour time

8. In a refrigeration system, heat absorbed in comparison to heat rejected is_________________?

   A. more
   B. less
   C. same
   D. more for small capacity and less for high capacity
   E. less for small capacity and more for high capacity

9. If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the h.p. of compressor required will be________________?

   A. same
   B. more
   C. less
   D. more/less depending on rating
   E. unpredictable

10. The COP of a vapor compression plant in comparison to vapor absorption plant is ________________?

    A. more
    B. less
    C. same
    D. more/less depending on size of plant
    E. unpredictable