When a voltmeter is connected across the switch, it measures 0 volts This means:

The synchronous speed of a 6 pole 60Hz single phase motor is:

A thermistor is used to measure which of the following:

Excessive liquid line length and/or lift can cause which of the following:

Which of the following is used for cleaning the ends of the cutting pipes and tubes after cutting them:

The slope of the condensate lines in an attic are often set by:

3,412 BTUs is equal to _______ watts.

Moisture remaining in a system following evacuation:

The evaporation will cause the dry-bulb temperature to decrease:

In air conditioning, the air temperature is listed more accurately as the ______ temperature.

Evaporation depends on which of the following factors:

________ is the actual weight of water vapor per unit volume of air.

The pressure required to overcome losses due to friction of duct systems is called _______

In order to determine the amount of sensible heat that is added to the refrigerant above its
saturation point which of the following shall be checked:

In which of the following configuration the equivalent resistance of two resistors is lower:

The more volatile hydrocarbons that vaporize first from crude oil forming _____ :

The highest Annual Fuel Utilization Efficiency (AFUE) units available are slightly less than _____ efficient: