One ton of refrigeration is defined as the heat rate corresponding to melting of one ton of ice in one ________________?

Related Mcqs:

1. One ton of refrigeration capacity is equivalent to the heat removal rate of____________________?

   A. 50 kcal/hr
   B. 200 BTU/hr
   C. 200 BTU/minute
   D. 200 BTU/day

2. A refrigeration cycle is a reversed heat engine. Which of the following has the maximum value of the co-efficient of performance (COP) for a given refrigeration effect ?

   A. Vapor compression cycle using expansion valve
   B. Air refrigeration cycle
   C. Vapor compression cycle using expansion engine
   D. Carnot refrigeration cycle

3. About _________________ ton of coke is required in a cupola to produce one ton of casting ?

   A. 0.03
   B. 0.3
   C. 0.8
   D. 1.5

4. COP of a refrigerator drawing 1 kW of power per ton of refrigeration is about____________________?

   A. 0.5
   B. 3.5
   C. 4.5
   D. 8.5

5. Pressure-enthalpy chart is useful in refrigeration. The change in internal energy of an ideal fluid used in ideal refrigeration cycle is_____________________?

   A. Positive
   B. Negative
   C. Zero
   D. Infinity

6. What is the value of maximum COP in case of absorption refrigeration, if refrigeration provided is at temperature, TR (where, T1 and T2 are source & surrounding temperatures respectively.) ?

   A. TR/(T2 – TR) × (T1 – T2)/T1
   B. TR/(T2 – TR) × T1/(T1 – T2)
   C. TR/(T1 – TR) × (T1 – T2)/T1
   D. None of these

7. Which of the following units is not present in both the vapor compression refrigeration system and absorption refrigeration system ?

   A. Expansion valve
   B. Condenser
   C. Refrigerator
   D. Compressor

8. Melting of ice exemplifies a/an______________________?

   A. Adiabatic process
   B. Endothermic reaction
   C. Exothermic reaction
   D. Process involving a chemical reaction

9. Melting of ice is an example of an _____________ process?

   A. Adiabatic
   B. Isothermal
   C. Isometric
   D. None of these

10. The following heat engine produces power of 100,000 kW. The heat engine operates between 800 K and 300 K. It has a thermal efficiency equal to 50% of that of the Carnot engine for the same temperature. The rate at which heat is absorbed from the hot reservoir is____________________?

    A. 100,000 kW
    B. 160,000 kW
    C. 200,000 kW
    D. 320,000 kW