Deck 12: Electronic Control Devices

Question 1

_____________________ refers to the electrical conductivity of the materials used in solid-state components.

Answer 1

Semiconductor

Question 2

Some of the materials used as semiconductors have a resistance almost halfway between that of glass (____________________) and copper (conductor).

Answer 2

insulator

Question 3

Electronic overload modules use thermistors to sense the temperature of the motor winding.

Answer 3

True

Question 4

Define voltage spike.

Question 5

If N-type material is sandwiched between two P-type materials, the transistor is referred to as a(n) ____________________ transistor.

Question 6

Originally, electronic devices were constructed using copper wire.

Question 7

Vacuum and gas-filled tubes are large and bulky and made of many delicate parts.

Question 8

What is the function of an anti-short-cycling timer?

Question 9

What is a triac?

Question 10

If P-type material is sandwiched between two N-type materials, the transistor is referred to as a(n) ____________________ transistor.

Question 11

What is a light-emitting diode (LED)?

Question 12

NPN and PNP type transistors are constructed of three parts: the base, the emitter, and the____________________.

Question 13

Sensors and nonlinear devices are accurate only within a specified range.

Question 14

The ____________________ is a combination of two semiconductor devices: the thermistor and the varistor.

Question 15

Electronic controls used in the heating, air-conditioning, and refrigeration industry are built as one component.

Question 16

Heat is the main enemy of an electric motor.

Question 17

When alternating current is used, there are often voltage spikes due to power surges, circuit characteristics, or lightning.

Question 18

Electronic control circuits generally are direct current circuits with their own power supply, usually an AC to AC diode rectifier.

Question 19

Equipment used in the industry is usually powered by alternating current in the voltage range of 220 to 480 volts.

Question 20

Most gas furnaces that have been installed from the past 10 years to current installations use an electronic control board, usually called a(n) ____________________ module, which supervises the operation of the entire gas furnace.