The power developed by the centrifugal pump is proportional to _______ its speed:

1 kWh of electric power is equivalent to _______ Btu per hour:

Most of the heat transfer from the heat exchanger is by which of the following:

The _______ of the manifold gauge set is used to charge, evacuate, add oil and recover refrigerant from a refrigeration and air conditioning system:

Single phase induction motor is self starting machine:

The air-to-air heat pump loses capacity as the outside temperature goes down

_______ is a combination of both sensible heat and latent heat:

When dry bulb temperature is equal to wet bulb temperature, the evaporation rate will be:

When there is an increase in the heat load on the evaporator, the refrigerant will tend to evaporate at a _______ rate:

The larger the diameter of the center hose, the higher will be evacuation time of the refrigerant from the system.

Sight glass is present at _______ in the refrigeration cycle:

_______ is the heat that is absorbed or extracted when a substance changes its state:

BTU stands for _______

Conductance is a term used to denote heat flow through _______ materials

In water-tube boilers, pressures range from _______ :

Recovery cylinders are color coded with grey bottom and _______top: