Refrigeration and air-conditioning objective questions and answers


1. One tonne refrigareting machine means.......


   A.One tonne is the total mass of the machine

   B.One tonne of refrigerant is used

   C.One tonne of water can be converted into ice

   D.One tonne of ice when melts from at 00C in 24 hours,the refrigeration effect produced is equivalent to 210 kJ/min


✔ View Answer


D.One tonne of ice when melts from at 00C in 24 hours,the refrigeration effect produced is equivalent to 210 kJ/min

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2. During a refrigeration cycle,heat is rejected by the refrigerant in a.......


   B.Condenser

   A.Compressure

   C.Evaporator

   D.Expansion valve


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B.Condenser

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3. One tonne of refrigeration is equal to


   A.21/kJ/min

   B.210/kJ/min

   C.420/kJ/min

   C.620/kJ/min


✔ View Answer


B.210/kJ/min

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4. Air refrigerator works on......


   A.Carnot cycle

   B.Rankine cycle

   C.Reversed carnot cycle

   D.Bell-Coleman cycle

   E.Both C and D


✔ View Answer


E.Both C and D

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5. The conditioned air supplied to the room must have the capacity to take up.......


   A.Room sensible heat load only

   B.Room latent heat load only

   C.Both B and C


✔ View Answer


C.Both B and C

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