Delmar's Standard Textbook Of Electricity
7th Edition
ISBN: 9781337900348
Author: Stephen L. Herman
Publisher: Cengage Learning
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Question
Chapter 13, Problem 1PA
To determine
The device used to correct the problem of high voltage spike produced by the relay and way of installation.
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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 13 Solutions
Delmar's Standard Textbook Of Electricity
Ch. 13 - What determines the polarity of magnetism when...Ch. 13 - What determines the strength of the magnetic field...Ch. 13 - 3. Name three factors that determine the amount of...Ch. 13 - 4. How many lines of magnetic flux must be cut in...Ch. 13 - Prob. 5RQCh. 13 - Into how many time constants is an exponential...Ch. 13 - 7. Each time constant of an exponential curve is...Ch. 13 - 8. An inductor has an inductance of 0.025 H and a...Ch. 13 - Prob. 9RQCh. 13 - Prob. 10RQ
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