Unit 15

A control can be which of the following?

• all of the above
• electrical
• mechanical
• electrical and mechanical

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

• light bulb, single-pole single-throw switch
• light bulb, electric motor
• single-pole single-throw switch, light bulb
• electric motor, light bulb

An electrical power consuming component ____.

• is also known as a load
• is often a basic switch
• is normally used to pass power to another component
• is normally wired in series in an electrical circuit

The line side of a switch is the ____.

• side the power source is connected to
• side the load is connected to
• neutral side of the circuit
• side with the white wire

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?

• G
• R
• Y
• W

The _____ is nothing more than a set of switches.

• Thermostat
• Transformer
• Coil
• Motor

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

• ohmmeter
• voltmeter
• clamp-on ammeter
• micron gauge

A 10-wrap amperage multiplier is used with a(n) ____.

• clamp-on ammeter
• voltmeter
• ohmmeter
• megger

Transformers are rated using ____.

• volt-amperes
• volt-ohms
• amperes-ohms
• volt-resistance

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.

• ladder diagram
• pictorial diagram
• layout
• oblique drawing