The purpose of an external equalizer is to compensate for the pressure drop through the evaporator:

Rectifier is used to convert ac to dc current:

Adhesive filters remove up to _______ of dust particles

When the wet bulb temperature reading is close to the dry bulb temperature reading from the same instrument, then _______

Which of the following device is provided with build with overload protection:

_______ heat propagates through a transparent medium such as air without affecting the mediums temperature, pressure and volume

A satisfactory Carbon dioxide measurement in an indoor environment is a maximum of _______:

For converting the gauge pressure to absolute, which of the following should be added to the pressure reading from a manifold gauge set:

The power factor is the ratio of:

A vacuum gauge reads pressure in _______

Charging and discharging of inductor and capacitor in _______ manner:

One horsepower is equivalent to _______ watts:

P–N Diodes are also called as _______

The top of the chimney should be at least _______ higher than the roof:

Which of the following compressors are oil free dry units: