One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of ice_________________?

Related Mcqs:

1. In S.J. unit, one ton of refrigeration is equal to___________________?

   A. 210 kJ/min
   B. 21 kJ/min
   C. 420 kJ/min
   D. 840 kJ/min
   E. 105 kJ/min

2. The general rule for rating refrigeration systems (excepting for C02 system) is to approximate following h.p. per ton of refrigeration__________________?

   A. 0.1 to 0.5 h.p. per ton of refrigeration
   B. 0.5 to 0.8 h.p. per ton of refrigeration
   C. 1 to 2 h.p. per ton of refrigeration
   D. 2 to 5 h.p. per ton of refrigeration
   E. 5 to 10 h.p. per ton refrigeration

3. 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

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

   A. same
   B. more
   C. less
   D. more or less depending on ambient conditions
   E. unpredictable

5. One ton refrigeratiqn corresponds to_________________?

   A. 50 kcal/min
   B. 50 kcal/kr
   C. 80 kcal/min
   D. 80 kcal/hr
   E. 1000 kcal/day

6. Ammonia-absorption refrigeration cycle requires__________________?

   A. very little work input
   B. maximum work input
   C. nearly same work input as for vapour compression cycle
   D. zero work input
   E. none of the above

7. Air refrigeration operates on_____________________?

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

8. 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

9. 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

10. 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