If the compression ratio of the compressor _______ , the volumetric efficiency of the compressor comes down:

Which of the following quantity of power is required to excite the motor and create the rotating magnetic field for its operation:

Motor draws _____ current compared to normal rated current when it is supplied by lower voltage:

The efficiency and power factor of the motor varies with which of the following:

The condenser temperature or discharge pressure will not change with the change in the surrounding temperature:

The rate at which the compressor oil absorbing gas ______ as the oil temperature falls:

Dry air filters offer ______ resistance to the airflow:

Suction pressure lower than normal results in increase in the system efficiency:

Megger test for motors and wiring is carried out to determine:

The scale formation in the water tubes is decelerated as the temperature of the water:

For the operation of electronic filters which of the following power supply is provided for the parallel plates:

As per ASHRAE standard, Carbon dioxide concentration inside a conditioned space should not be more than ______:

Stable combustion conditions require which of the following inputs: (Multiple Answer Question)

The higher the temperature of the heating source, the more it will release contaminants into the indoor air:

In Non-Direct Vent installations, combustion air is taken from _____ and flue gases are discharged _____:

Typically ______ efficiency loss occurs with every 40°F increase in stack temperature of water tube boiler: