In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s. The sensible heat factor for the process will be 0.6 0.3 0.67 1.5 TRUE ANSWER : ? YOUR ANSWER : ?
The refrigerant after condensation process is cooled below the saturation temperature before throttling. Such a process is called Normal cooling Super-cooling Sub-cooling or under-cooling None of the listed here TRUE ANSWER : ? YOUR ANSWER : ?
Refrigeration in aeroplanes usually employs the following refrigerant Freon-11 Freon-22 Air CO2 TRUE ANSWER : ? YOUR ANSWER : ?
The refrigerant used in small tonnage commercial machines (hermetically sealed units) is Carbon dioxide Sulphur dioxide R-12 Ammonia TRUE ANSWER : ? YOUR ANSWER : ?
Vapour compression refrigeration is somewhat like Reversed Carnot cycle None of these Carnot cycle TRUE ANSWER : ? YOUR ANSWER : ?
In vapour compression cycle, the condition of refrigerant is very wet vapour After passing through the expansion or throttle valve After passing through the condenser Before passing through the condenser Before entering the compressor TRUE ANSWER : ? YOUR ANSWER : ?
For evaporators and condensers, for the given conditions, the logarithmic mean temperature difference (tm) for parallel flow is ________ that for counter flow. None of these Equal to Greater than Less than TRUE ANSWER : ? YOUR ANSWER : ?
The coefficient of performance of a domestic refrigerator is ________ as compared to a domestic air-conditioner. Less None of these More Same TRUE ANSWER : ? YOUR ANSWER : ?
The material of pipe lines for a system using Freon as a refrigerant should be Copper Steel Brass Aluminium TRUE ANSWER : ? YOUR ANSWER : ?
The horizontal and non-uniformly spaced lines on a psychrometric chart indicates Dew point temperature Wet bulb temperature Specific humidity Dry bulb temperature TRUE ANSWER : ? YOUR ANSWER : ?