EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN: 9781337516549
Author: Simmons
Publisher: CENGAGE LEARNING - CONSIGNMENT
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Chapter 4, Problem 39R
If, because of some obstruction in a wall space, it is impossible to keep a Type NM cable at least 1¼ in. (32 mm) from the edge of the stud, then it shall be protected by a metal plate at least in. thick.
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"I need the solution along with proof of the
correct choice by the expert."
choose the correct answer
1. The maximum break down strength of air at 76 cm mercury pressure and temperature of 25 °C is......
a. 30 V/cm
b. 30 kV/cm
c. 300 kV/cm
d. Non of them
2. The installed capacity of a power station must be not ....... than the maximum demand.
b. equal
c. more
a. Less
3. Area under the daily load curve divided by 24 hour gives daily
d. Non of them
a. average load in kW. b. maximum demand in kW. c. units generated in kwh. d. Non of them
4. In thermal power station, 5 kwh need to burn fuel has
a. 860 k.calorific. b. 1500 k.calorific c. 4300 k.calorific d. Non of them.
5. Francis and Kaplan turbines are used for... heads.
a. medium and high b. medium and low c. medium only.
d. High only
6. For photo voltage cell, Fill factor is
a.
Umpimp
Uscise
b.
Vscisc
Vmpimp
c. Vmpimp
d. Vscisc
7. Power available from wind mill is
a. PA V²
b.
-AV²
c. PA V³
d. pA V³
2p
"I need the solution along with proof of the
correct choice by the expert."
b. Less than 33Kv
c. Greater than 33Kv
stored as
Pick up the correct option for five only (with the solution if required).
1. Suspension insulator used for transmission and distribution of electric power at
a. Up to 33Kv
2. The excess energy from wind power turbine can be
chemical energy b. mechanical energy
3. Reaction turbines are used for
a. High heads
a.
b. medium heads
4. More efficient plants are used as
d. Not of all
c. compressed air d. All of them
c. low heads d. low and medium heads.
a. base load stations b. peak load stations c. Average load d. All of
them
5. Alignment of the blade angle with respect to the wind direction to get maximum wind
energy
can be achieved with the help of
a. Fixed gears
b. Yaw motor gear
6. For photo voltage cell, Fill factor using the data:
b. 0.59
c. 0.20
c. Control systems
d. Blades
P-15 W, V-18 V, I-4 A. is
d. 0.98
a. 0.65
7. A commercial load is connected to the grid…
Chapter 4 Solutions
EBK ELECTRICAL WIRING RESIDENTIAL
Ch. 4 - The largest size solid conductor generally...Ch. 4 - What is the minimum branch-circuit wire size that...Ch. 4 - What exceptions, if any, are there to the answer...Ch. 4 - What determines the ampacity of a wire?Ch. 4 - What unit of measurement is used for the diameter...Ch. 4 - What unit of measurement is used for the...Ch. 4 - What is the voltage rating of the conductors in...Ch. 4 - Indicate the allowable ampacity of the following...Ch. 4 - Prob. 9RCh. 4 - What are the colors of the conductors in...
Ch. 4 - For nonmetallic-sheathed cable, may the...Ch. 4 - Prob. 12RCh. 4 - Under what condition may nonmetallic-sheathed...Ch. 4 - a. What is the maximum distance permitted between...Ch. 4 - Prob. 15RCh. 4 - Prob. 16RCh. 4 - Prob. 17RCh. 4 - Prob. 18RCh. 4 - Prob. 19RCh. 4 - Circle the correct answer to the following...Ch. 4 - When running Type NM cable through a bored hole in...Ch. 4 - Where is the main service-entrance panel located...Ch. 4 - Is it permitted to use flexible metal conduit over...Ch. 4 - Liquidtight flexible metal conduit may serve as a...Ch. 4 - It is permissible for an electrician to connect...Ch. 4 - Terminals of switches and receptacles marked...Ch. 4 - Wire connectors marked AL/CU are suitable for use...Ch. 4 - A wire connector bearing no marking or reference...Ch. 4 - When Type NM cable is run through a floor, it must...Ch. 4 - When nonmetallic-sheathed cables are bunched or...Ch. 4 - In diagrams A and B, nonmetallic-sheathed cable is...Ch. 4 - The marking on the outer jacket of a...Ch. 4 - A 120-volt branch circuit supplies a resistive...Ch. 4 - In problem 35, it is desired to keep the voltage...Ch. 4 - Prob. 37RCh. 4 - The allowable ampacity of a 4 AWG THHN from Table...Ch. 4 - If, because of some obstruction in a wall space,...Ch. 4 - The recessed fluorescent luminaires installed in...Ch. 4 - Prob. 41RCh. 4 - What size overcurrent device protects the...Ch. 4 - May the 20-ampere small-appliance branch circuits...Ch. 4 - A 30-ampere branch circuit is installed for an...Ch. 4 - In many areas, metal framing members are being...Ch. 4 - Are set screwtype connectors permitted to be used...Ch. 4 - Most armored cable today has 90C conductors. What...Ch. 4 - If you saw two different types of SE cables, how...Ch. 4 - Circle the correct answer defining the type of...
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