unit 15

A control can be which of the following?

• electrical

• mechanical

• electrical and mechanical

• all of the above

An example of a power consuming device would be a ____ while an example of a non-power consuming device would be a ____.

• single-pole single-throw switch, light bulb

• light bulb, electric motor

• electric motor, light bulb

• light bulb, single-pole single-throw switch

If an air-conditioning system is turned on but none of the major components (compressor, condenser, indoor fan) are operating, what is the first thing that a technician should check?

• the compressor terminal wire connections

• the indoor fan relay

• the condenser fan motor capacitor

• the power being supplied to the system

Transformers are rated by____.

• volt-amperes

• volt-ohms

• amperes-ohms

• farads

If an air conditioning system is calling for cooling and the compressor is running but the indoor (evaporator) fan is not running, which terminal on the thermostat will the technician most likely check first?

• W

• Y

• G

• O

An electrical power consuming component ____.

• is normally wired in series in an electrical circuit

• is normally used to pass power to another component

• is often a basic switch

• consumes power and is normally wired in parallel

The line side of a switch is the ____.

• side the load is connected to

• neutral side of the circuit

• side the power source is connected to

• side with the white wire

The continuity through a heat relay is checked using a(n) ____.

• ohmmeter

• voltmeter

• clamp-on ammeter

• clamp-on ammeter

A(n) ____ is the easiest diagram to use to follow a circuit. This diagram normally can be studied briefly, and the circuit function should become obvious.

• pictorial diagram

• ladder diagram

• layout

• oblique drawing

An electrical diagram showing the approximate location of the components is called a(n)

• pictorial diagram

• ladder diagram

• layout

• oblique drawing