Which of the following motor is best suited for speed control applications:

Which of the following motors are more rugged and can handle more load:

A cooling thermostat closes on a temperature drops:

In Psychrometric chart, ______ are used to measure dry-bulb temperatures:

_______ is the cubic feet of the mixture per pound of dry air:

Square cut or butt joints are not permitted on corners of ductboard sections:

A ______ is used to control the flow of refrigerant in an air conditioning or refrigeration system:

Which of the following element is used to increase the power factor of a circuit:

Locked Rotor Ampere (LRA) current of a motor will be typically ________ times the normal running current of the motor:

The speed of 4 pole motor is about ______ rpm:

An amperage is the measurement of which of the following:

A thermostatic expansion valve modulates to maintain suction _____:

A suction line accumulator is used for which of the following purpose:

Which of the following will never get energized during defrost mode in a heat pump:

Which of the following is not available in heat pump:

The efficiency of a boiler increases as the heating surface of the boiler ______ :

Low pressure steam boilers will have operating pressure less than: