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

Related Mcqs:

1. 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

2. In vapor compression cycle, the condition of refrigerant is very wet 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 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

4. The vapor compression refrigerator employs the following cycle_________________?

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

5. 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

6. Vapor compression refrigeration is some what like ____________________?

   A. Carnot cycle
   B. Rankine cycle
   C. reversed Camot cycle
   D. reversed Rankine cycle
   E. none of the above

7. 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

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 evolution of heat of solution takes place in ammonia absorption plant when _____________________?

   A. ammonia vapour goes into solution
   B. ammonia vapour is driven out of solution
   C. lithium bromide mixes with ammonia
   D. weak solution mixes with strong solution
   E. lithium bromide is driven out of solution

10. For better COP of refrigerator, the pressure range corresponding to temperature in evaporator and condenser must be____________________?

    A. small
    B. high
    C. euqal
    D. anything
    E. under some conditions small and under some conditions high