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Electricity 1: Devices, Circuits and Materials

Thomas Kubala

Chapter 16

TYPICAL BELL CIRCUITS - all with Video Answers

Educators

Chapter Questions

Problem 1

In Figure 16-8, the pushbutton in Plant A is to operate the buzzer in Plant B. The pushbutton in Plant B is to operate the bell in Plant A. Only one supply source is available at Plant A and only three wires may be used between the two plants. Complete the wiring diagram.
FIGURE CANT COPY
FIGURE P16.8

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01:44

Problem 2

In items 2 through 6, select the best answer to make the statement true, and place the letter of the answer in the space provided.
In a vibrating bell, the sound is made by the armature being pulled to the____
a. pushbutton.
b. contact points.
c. electromagnets.
d. grounded case.
e. terminals.

Briana De La Torre
Briana De La Torre
Numerade Educator

Problem 3

In items 2 through 6, select the best answer to make the statement true, and place the letter of the answer in the space provided.
The circuit that is formed by a single bell controlled from one location is called a____
a. series circuit.
b. parallel circuit.
c. series-parallel circuit.
d. combination circuit.
e. Norton circuit.

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Problem 4

In items 2 through 6, select the best answer to make the statement true, and place the letter of the answer in the space provided.
The usual AWG number for bell wire is____
a. 12
d. 24
b. 18
e. 31
c. 20

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Problem 5

In items 2 through 6, select the best answer to make the statement true, and place the letter of the answer in the space provided.
Bell wires with low-voltage insulation may enter an outlet box containing power conductors if____
a. there is a great voltage difference.
b. the bell wire is of normal size.
c. a chime circuit is being wired.
d. a metal partition is used.
e. your foreman thinks it's all right.

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Problem 6

In items 2 through 6, select the best answer to make the statement true, and place the letter of the answer in the space provided.
Bell transformers____
a. can be used with only one signaling device.
b. can be used with several signaling devices.
c. should be placed at the front and rear doors.
d. should have different tones.
e. can only be used with a single pushbutton.

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Problem 7

For items 7 through 12, answer true (T) or false (F).
Bell wires with low-voltage insulation may be installed in the same raceway with lighting conductors.____

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Problem 8

For items 7 through 12, answer true (T) or false (F).
Door chimes require transformers with larger capacity than bells and buzzers.____

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Problem 9

For items 7 through 12, answer true (T) or false (F).
A bell may be controlled from one location only.____

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Problem 10

For items 7 through 12, answer true (T) or false (F).
One rule for bell circuits is to connect a conductor from the pushbutton to the bell that is to be controlled.____

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Problem 11

For items 7 through 12, answer true (T) or false (F).
Transformers convert regular house voltages to lower, safer voltages for bell circuits.____

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Problem 12

For items 7 through 12, answer true (T) or false (F).
Bell wires may be fastened directly to surfaces with insulated staples.____

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