ELECTRICAL WIRING:RESIDENT.-TEXT (PB)
19th Edition
ISBN: 9781337116213
Author: MULLIN
Publisher: CENGAGE L
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Textbook Question
Chapter 26, Problem 15R
The wiring of more complex household fire alarm systems is covered in what article of the National Electrical Code? (Circle the correct answer.)
- a. Article 725
- b. Article 310
- c. Article 760
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17. The filament of incandescent lamp is usually made of:
a. copper
b. silver
c. aluminum
d. tungsten
18. A current measuring instrument can be modified to measure voltages by:
a. using thicker wire in the coil
b. using a high resistance shunt
c. adding resistance in series
d. adding resistance in parallel
21. "When two power sources are connected in a series-aiding configuration, the output voltage equals the _____________"
a. supply with the highest voltage
b. supply with the lowest voltage
c. difference of the two supplies
d. sum of the two supplies
Question 3:
Suppose an engineer designed a fire alarm system for a large warehouse, with multiple
pushbutton switches connected to a single alarm siren:
Siren
Actuating any of the normally-open switches results in the alarm sounding. So far, so good.
Now, suppose that one of the wires connecting one side of several switches to the rest of
the circuit breaks open. What will the result of this failure be?
Siren
break!
1. A standard incandescent dimmer can be used to control which of the following loads?
c. either a or b
d. neither a nor b
a. a low-voltage lighting transformer
b. incandescent lighting
2. Negative battery terminals are generally have a
a. red
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color marking.
b. black
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b. lead-acid
4. Ceiling-suspended (paddle) fan speed can be controlled by
a. pull chain on the fan
b. speed control mounted in a wall box.
Figure 116.109
3. Refer to Figure 116.109. The three-way switch to the left of the sliding doors controls
a. the ceiling fan
c. the exterior light fixture
b. the exterior WP GFCI receptacle
d. the four split-wired receptacles
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|||
c. remote-control similar to TV/VCR type
d. any of these
5. A storage battery is comprised of one or more rechargeable cells of the
electrochemical types.
a. nickel-cadmium
c. either a or b.
or other rechargeable
d. neither a nor b
Chapter 26 Solutions
ELECTRICAL WIRING:RESIDENT.-TEXT (PB)
Ch. 26 - In your own words, explain the terms alarm and...Ch. 26 - The requirements for household fire alarm systems...Ch. 26 - Do heat alarms and carbon monoxide alarms take the...Ch. 26 - Name two basic ways that smoke alarms are powered.Ch. 26 - Name the two types of smoke alarms.Ch. 26 - List the absolute minimum level of smoke alarm...Ch. 26 - Circle the correct answer from the following...Ch. 26 - Circle the correct answer from the following...Ch. 26 - Circle the correct answer from the following...Ch. 26 - Prob. 10R
Ch. 26 - Prob. 11RCh. 26 - An important but often overlooked requirement in...Ch. 26 - Carbon monoxide is ____________, and is...Ch. 26 - Circle the correct answer from the following...Ch. 26 - The wiring of more complex household fire alarm...Ch. 26 - Circle the correct answer from the following...Ch. 26 - Circle the correct answer from the following...Ch. 26 - Fire alarm cable generally used in more complex...Ch. 26 - When installing a fire alarm system or a complete...Ch. 26 - Residential sprinkler fire protection systems are...
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