The pressure at the inlet of a refrigerant compressor is called? Mark as favorite Copy Link suction pressure discharge pressure critical pressure back pressure Check Answer
R-12 is generally preferred over R-22 in deep freezers since? Mark as favorite Copy Link it has low operating pressures it gives higher coefficient of performance it is miscible with oil over large range of temperatures all of the above Check Answer
Carbon dioxide is? Mark as favorite Copy Link colourless odourless non-flammable all of these Check Answer
Most air cooled condensers are designed to operate with a temperature difference of? Mark as favorite Copy Link 5°C 8°C 14°C 22°C Check Answer
Which of the following refrigerant has the lowest freezing point? Mark as favorite Copy Link R-11 R-12 R-22 Ammonia Check Answer
The natural convection air cooled condensers are used in? Mark as favorite Copy Link domestic refrigerators water coolers room air conditioners all of these Check Answer
In free convection heat transfer transition from laminar to turbulent flow is governed by the critical value of the? Mark as favorite Copy Link Reynold's number Grashoff's number Reynold's number, Grashoff's number Prandtl number, Grashoff's number Check Answer
The minimum temperature to which water can be cooled in a cooling tower is? Mark as favorite Copy Link dew point temperature of air wet bulb temperature of air dry bulb temperature of air ambient air temperature Check Answer
Radiation is the process of heat transfer in which heat flows from ……….. in a straight line, without affecting the intervening medium? Mark as favorite Copy Link cold body to hot body hot body to cold body smaller body to larger body larger body to smaller body Check Answer
The atmospheric air at dry bulb temperature of 15°C enters a heating coil maintained at 40°C. The air leaves the heating coil at 25°C. The by-pass factor of the heating coil is? Mark as favorite Copy Link 0.376 0.4 0.6 0.67 Check Answer