Delmar's Standard Textbook Of Electricity
7th Edition
ISBN: 9781337900348
Author: Stephen L. Herman
Publisher: Cengage Learning
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Chapter 13, Problem 9RQ
To determine
The maximum induced voltage when the switch is opened.
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what article of NEC states ungrounded conductor of the motor starter is it necessary to open both the ungrounded conductor and the neutral in a single phase motor
A generating station is to supply four regions of load [15MW,10 MW,20MW,3MW].
The diversity factor at the station is 1-6. Calculate:
(i) The maximum demand on the station.
(ii) Suggest the installed capacity and the number of units.
NOT: Taking installed capacity to be 20% more than the maximum demand.
Pick up the correct answer
1. Most of the high-voltage transmission lines are
A. Underground.
B. Overhead
2. High-voltage transmission lines use
A. Suspension insulators
C. Wireless D. None of them.
B. Pin insulators
C. Both A and B
D. None of them.
C. Either of the above
D. None of the above
3. The load on distributors systems are generally
A. Balanced
B. Unbalanced
4. A feeder in a transmission system feeds power to
A. Distributors B. Generating stations C. Service mains D. All of the above
5. Corona loss increases with
A. Decrease in conductor size & increase in supply frequency.
B. increase in both conductor size and supply frequency.
C. Decrease in both conductor size and supply frequency.
D. Increase in conductor size and decrease in supply frequency.
6. If the length of a cable is doubled. Its capacitance is
C. Quadrupled D. None of the above
7. The distributors for residential areas are
B. 3-D three wire
B. 20V
C. 3-0 four wire D. None of the above
8. Five photocells are…
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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