() are used to limit the pressure in any particular portion and mainly control the pressure after the valve.
In its simplest form the pressure reducing valve is opened or closed by () which is balanced by the downstream pressure acting on a diaphragm.
The pressure head of a pump is given in the unit of ().
The evaporating pressure in R22 vapor compression refrigeration plant should be () atmospheric.
In order to distribute the side pressures over a wide area of the cylinder walls and liners, which of the listed types of pistons are used in modem low pressure air compressors?()
The weather is often()in a high-pressure area.
The atmosphere in the vicinity of a high pressure area is called a(n)().
In terms of pressure and temperature in the refrigerant in the compressor, what happens to the primary?()
In the Southern Hemisphere winds in a low pressure system rotate in a().
The diurnal pressure variation is most noticeable in the().
In a vacuum distillation system, the case is the higher the pressure, ().
In the common rail system, excessive pressure in the header may be caused by ()
In an auxiliary boiler steam and water system, the highest pressure will be in the ().
In a compression refrigeration plant the refrigerant is under low pressure in the () and under high pressure in the ().
Under normal operating conditions, the highest temperature and pressure conditions existing in a flash-type evaporator will occur in the ().
If a large difference exists between the compressor discharge pressure and the pressure corresponding to the existing condensing temperature in a refrigeration system, you should().
A slow rise in the barometric pressure forecasts().
The vapor pressure of a gas is the pressure necessary to keep it in a(n)().
When normal operating pressure is applied to the hydraulic oil used in a high-pressure system, the oil ().
The pressure head of a water pump is given in the unit of ().
The highest pressure in a diesel engine cylinder normally occurs ().
In order to improve the working conditions of the crosshead bearings, the bearing pressure is made and the peripheral speed is made in later designs()
The author suggests in the last paragraph that the effect of peer pressure is______.
The metal powder is compacted by placing in a closed()cavity under pressure in powder
The pressure range between the system cut in and cut out pressures in a refrigeration unit is known as_______.