The cooling system used for supersonic aircrafts and rockets is
Simple air cooling system
Bootstrap air cooling system
Reduced ambient air cooling system
Regenerative air cooling system
- The total pressure exerted by the mixture of air and water vapour is equal to the sum of pressures which…
- The vapour compression refrigerator employs the following cycle
- The dry bulb temperature during sensible heating of air
- Most thermostatic expansion valves are set for a superheat of
- The central air conditioning system has ________ overall efficiency as compared to individual systems.
- The process of under-cooling is generally brought about by
- The formation of frost on cooling coils in a refrigerator
- The wet bulb depression is zero when relative humidity is
- The capacity of a domestic refrigerator is in the range of
- Environmental protection agencies advice against the use of chlorofluorocarbon refrigerants since
- The domestic refrigerator uses following type of compressor
- In a refrigeration system, heat absorbed in comparison to heat rejected is
- The human body feels comfortable when the heat stored in the body is
- While designing the refrigeration system of an aircraft, the prime consideration is that the
- The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is
- The refrigerant used in small tonnage commercial machines (hermetically sealed units) is
- Air refrigeration operates on
- A condenser of refrigeration system rejects heat at the rate of 120 kW, while its compressor consumes…
- In a vapour compression refrigeration system, a throttle valve is used in place of an expander because
- The wet bulb temperature at 100% relative humidity is ________ dew point temperature.
- The minimum temperature to which water can be cooled in a cooling tower is
- The bypass factor for a cooling coil
- The pressure at the inlet of a refrigerant compressor is called
- Which of the following statement is correct?
- In a spray washing system, if the temperature of water is higher than the dry bulb temperature of entering…
- The horizontal and non-uniformly spaced lines on a psychrometric chart indicates
- The coefficient of performance of a domestic refrigerator is ________ as compared to a domestic air-conditioner.
- The thermal diffusivity for gases is generally __________ those for liquids.
- Which of the following cycles uses air as the refrigerant?
- In a pressure enthalpy chart, the space to the left of the saturated liquid line represents