Deck 33: Fan-Limit Switches

Question 1

Limit switches contain a normally closed contact.

Answer 1

True

Question 2

In one type of fan switch, the switch is used to control the speed of a fan motor as opposed to turning it on or off.

Answer 2

True

Question 3

Some fan switches are designed with large enough contacts to permit them to control the operation of the ____ without a fan relay.

A) controller
B) control module
C) blower motor
D) resistor

Answer 3

blower motor

Question 4

With fan switches, a set of contacts is closed when the temperature of the ____ reaches a high enough level.

A) compressor
B) blower
C) dryer
D) heat exchanger

Question 5

In a few models, fan switches are operated by a bimetal strip that closes a set of contacts.

Question 6

In one type of fan switch, the temperature at which the switch contacts will close is determined by the ____.

A) dryer
B) blower fan
C) manufacturer
D) filter

Question 7

One type of condenser speed-control switch is a single-pole ____.

A) double-throw switch
B) single cell switch
C) multi-point switch
D) multi-cell switch

Question 8

One type of limit switch is used as a safety cut-off switch for a cooling system.

Question 9

The fan-limit switch contains both a fan switch and a high-limit switch in one housing.

Question 10

A limit switch is generally a ____.

A) bimetal-operated switch
B) microswitch with roller lever
C) magnetic level switch
D) push button switch