The power factor may be expressed as the ratio of the actual power to the apparent power:

A centrifugal switch is used to take a start winding out of the circuit once the motor reaches ______ of the run speed:

Which of the following converts dc voltage to ac voltage:

Resistance of a conductor is _____ to the length of the conductor and ______ to the area of cross section of the conductor:

Which of the code deals with the installation of electrical equipment:

Voltmeter shall be connected always in ________ in a circuit:

The number of air changes required in a commercial stucture can be found in ____ specifications.

Which of the following can cause refrigerant gauges to act erratically

In a simple resistive circuit, the voltage is 240V AC and the current is 10 amps. What is the restance of the circuit

The temperature of the water vapor is always the same as the air:

The difference between the dry-bulb and wet-bulb temperatures is called the ______ :

The ______temperature  is located at the bottom of the psychrometric chart:

TXV also controls the quantity of liquid refrigerant that enters the evaporator

The lower the system refrigerant charge, lesser the reliably of the system performs

The ________connects the evaporator to the compressor:

Vaporization changes the oil into tiny droplets for proper combustion:

As per ASTM specifications for fuel oil properties which of the following is Heavy grade fuel oil: