Refrigeration and Air Conditioning Which of the following refrigerants has lowest freezing point? Freon-22 NH3 CO2 Freon-12 Freon-22 NH3 CO2 Freon-12 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In a domestic vapour compression refrigerator, the refrigerant commonly used is All of these R-12 CO? Ammonia All of these R-12 CO? Ammonia ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In aqua ammonia and Lithium bromide water absorption refrigeration systems, the refrigerants are respectively Ammonia and water Water and water Water and lithium bromide Ammonia and lithium bromide Ammonia and water Water and water Water and lithium bromide Ammonia and lithium bromide ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In a reversed Brayton cycle, the heat is absorbed by the air during Isentropic expansion process Isentropic compression process Constant pressure expansion process Constant pressure cooling process Isentropic expansion process Isentropic compression process Constant pressure expansion process Constant pressure cooling process ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Most thermostatic expansion valves are set for a superheat of 5°C 10°C 15°C 20°C 5°C 10°C 15°C 20°C ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The condensing pressure due to the presence of non-condensable gases, as compared to that actually required for condensing temperatures without non-condensable gases, Will remain unaffected May be higher or lower depending upon the nature of non-condensable gases Will be higher Will be lower Will remain unaffected May be higher or lower depending upon the nature of non-condensable gases Will be higher Will be lower ANSWER DOWNLOAD EXAMIANS APP
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