Purely resistive circuit will have _____ power factor

Wye delta starters are typically used for ______ loads such as centrifugal air conditioning units

RTDs are used in measuring which of the following:

The typical current range of sensor is:

The resistance value when measured across the coil is found to be 0 ohms. Then the coil is:

At a constant pressure if the absolute temperature of the gas is doubled, its volume will:

Which of the following is used for leak-testing the refrigerant tubing:

A perfect vacuum is _____:

_______ cfm per ton of cooling is needed for normal comfort applications:

Lack of air over the condenser results in which of the following: 

To prevent infiltration of outside air, a building is kept at a slightly ______ air pressure.

The rate of doing work is known as:

A refrigeration ton is approximately equivalent to _____

The crankcase heater purpose is to keep the refrigerant at a temperature higher than the coldest part of the system

In heating mode the indoor coil of the heat pump acts as ____:

HEPA filter is designed to remove microbial and biological contaminants and can trap particles down to ______ size: