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0662016 Related Question Answers
3. Which of the following refrigerant has the lowest boiling point?
Ammonia Carbon dioxide Sulphur dioxide R-12
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4. Which Constitution Amendments provides for the formation of National Judicial Appointment Commission in 2013?
94 98 99 92
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5. Sensible heat factor is:
Sensible heat/Latent heat Sensible heat Latent heat Sensible heat Latent heat/Sensible heat Total heat Sensible heat Sensible heat Total heat
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6. Amount of heat required to raise the temperature of one pound of water through 1°C is called:
C.H.U. B.T.U. Calorie Specific heat
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7. Oil separator is filled in between :
Condenser and evaporator On the suction line Compressor and condenser At the receiver outlet
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8. H.F.C. should not vent into atmosphere because :
It is flammable in atmospheric temperature It has high global wanning potential It is highly toxic It is very costly gas
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9. Process of changing solid into its vapour state without passing through liquid state is :
super heating sublimationsublimation subcooling triple pointtriple point
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10. Latent heat of fusion of ice is :
335 kJ/kg 144 BTU/lb 80 kilo calories/kg all of the above
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11. Sling psychrometer is used to measure :
only dry bulb temperature only wet bulb temperatureonly wet bulb temperature dry and wet bulb temperature relative humidity
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12. In air refrigeration refrigerating effect is produced by
compressing air expanding air subcooling super heatingsuper heating
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13. Accumulator is provided for :
storing of unvapourized liquid ’storing of liquid refrigerantstoring of liquid refrigerant exchange of heat condensing gas
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15. Select the wrong characteristics of refrigerant:
low latent heat low boiling pointlow boiling point high thermal conductivity -none of these
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16. The function of duct in air conditioning unit is :
air cooling air cleaningair cleaning air drying air distributingair distributing
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18. The C.O.P. of a domestic refrigerator in comparison to domestic air conditioner will
more samesame less unpredictable
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20. The brine is always used as a secondary refrigerant in :
cold storage milk chilling plant ice plant none of these
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21. In winter air conditioning the process used is :
Dehumidification Heating and humidification Humidification Cooling and dehumidification
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23. Sub cooling is a process of cooling the refrigerant before :in vapour compression refrigeration system
Evaporation Throttling Condensation Compression
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