1000+ Refrigeration and Air Conditioning GATE Interview Questions - 1

Question: 1

Dew point is

(A) the temperature at which condensation of water vapour in air starts

(B) the temperature of water vapour in air starts

(C) partial pressure of water vapour in a sample of air

(D) percentage of moisture contained in a sample of air

Question: 2

Reversed Carnot cycle comprises

(A) two isentropic processes and two constant volume processes

(B) two isentropic processes and two constant pressure processes

(C) two isentropic processes and isothermal processes

(D) two isentropic processes and adiabatic processes

Question: 3

Which of the following refrigerant has the lowest specific volume?

(A) ammonia

(B) carbondioxide

(C) freon 12

(D) freon 22

Question: 4

Super conductors

(A) offer no resistance to flow of fluids at low temperature

(B) cannot be magnetised at low temperature

(C) offer no resistance to flow of electricity at low temperature

(D) offer no resistance to flow of heat at low temperature

Question: 5

Air conditioning means

(A) dehumidifying

(B) cooling

(C) heating

(D) all of the above