One ton refrigeratiqn corresponds to_________________?

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. 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 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

4. 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

5. A standard ice point temperature corresponds to the temperature of ___________________?

   A. water at 0°C
   B. ice at – 4°C
   C. solid and dry ice
   D. mixture of ice, water and vapour under equilibrium conditions under NTP conditions
   E. mixture of ice and water Under equilibrium conditions

6. Allowable pressure on high-pressure side or ammonia absorption system is of the order of_________________?

   A. atmospheric pressure
   B. slightly above atmospheric pressure
   C. 2-4 bars
   D. 5-6 bars
   E. 7-10 bars

7. Rating of a domestic refrigerator is of the order of__________________?

   A. 0.1 ton
   B. 5 tons
   C. 10 tons
   D. 40 tons
   E. 100 tons

8. Accumulators should have adequate volume to store refrigerant charge at least_________________?

   A. 10%
   B. 25%
   C. 50%
   D. 75%
   E. 100%

9. Reducing suction pressure in refrigeration cycle_________________?

   A. lowers evaporation temperature
   B. increases power required per ton of refrigeration
   C. lowers compressor capacity because vapour is lighter
   D. reduces weight displaced by piston
   E. all of the above

10. 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