Refrigeration and Air Conditioning R-12 is generally preferred over R-22 in deep freezers since It is miscible with oil over large range of temperatures It gives higher coefficient of performance All of these It has low operating pressures It is miscible with oil over large range of temperatures It gives higher coefficient of performance All of these It has low operating pressures ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A bootstrap air cooling system has Two heat exchangers One heat exchanger Four heat exchangers Three heat exchangers Two heat exchangers One heat exchanger Four heat exchangers Three heat exchangers ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The superheated vapour region, in a pressure enthalpy chart, is represented by the space To the left of saturated liquid line Between the saturated liquid line and saturated vapour line None of these To the right of saturated liquid line To the left of saturated liquid line Between the saturated liquid line and saturated vapour line None of these To the right of saturated liquid line ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning An evaporator is also known as Chilling coil Cooling coil Freezing coil All of these Chilling coil Cooling coil Freezing coil All of these ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In a refrigerating machine, heat rejected is _________ heat absorbed. Greater than None of these Equal to Less than Greater than None of these Equal to Less than ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning An infinite parallel planes with emissivities e₁ and e₂, the interchange factor for radiation from surface 1 to surface 2 is given by (e₁ + e₂)/ e₁ + e₂ - e₁e₂ e₁e₂ 1/e₁ + 1/e₂ e₁ + e₂ (e₁ + e₂)/ e₁ + e₂ - e₁e₂ e₁e₂ 1/e₁ + 1/e₂ e₁ + e₂ ANSWER DOWNLOAD EXAMIANS APP
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