Deck 11: Wiring Applications

Question 1

A(n) ____ is a place in the wiring system where conductors of opposite polarity make contact.

A) grounded conductor
B) fuse
C) short circuit
D) circuit breaker

Answer 1

C

Question 2

A ____ overcurrent device is a fuse or circuit breaker that opens the circuit much more quickly than the ordinary device does.

A) current-limiting
B) voltage-limiting
C) fast-acting
D) grounding

Answer 2

A

Question 3

Fuses and circuit breakers have ____ current ratings.

A) two
B) three
C) four
D) five

Answer 3

A

Question 4

One of the rules for residential wiring is to install a 200-ampere, three-wire or larger service for a single-family dwelling.

Question 5

At times, lights are controlled by ____ switches and relays.

A) low-voltage
B) inductive
C) high-voltage
D) four-pole

Question 6

When calculating the load, it is common practice to start with the branch circuits and combine their loads at each panel.

Question 7

There are ____ general types of circuit breakers.

A) two
B) three
C) four
D) five

Question 8

Most residential installation circuits are protected against overcurrent by 25-ampere or larger fuses or circuit breakers.

Question 9

A(n) ____ control permits all of the lights or specific groups of lights to be controlled from one location.

A) residential selector
B) universal selector
C) two-way
D) master selector

Question 10

A common design practice is to allow a circuit breaker to carry only ____ percent of its continuous current rating.

A) 60
B) 70
C) 80
D) 90

Question 11

A demand factor is the ratio of the maximum load used at any one time to the total connected load.

Question 12

A ground-fault circuit interrupter is a device that senses a small imbalance of current between the ungrounded (hot) conductor and the grounded (neutral) conductor.

Question 13

Which of these is one of the three common styles of switches used to control lights?

A) single-pole
B) double-pole
C) two-way
D) grounded

Question 14

____ fuses are the type most commonly used in industrial installations.

A) Plug
B) Two-way
C) Replaceable
D) Cartridge

Question 15

To minimize line drop, electrical services should be installed in a(n) ____ location to minimize the distance to the loads.

A) outdoor
B) top floor
C) central
D) remote