Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Chapter 5, Problem 8SQ
To determine
Specify the terminal markings of the delta-wound motor in Figure 5-19.
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1. Tests of a 10 kVA, 230/2300 V single-phase transformer have yielded the following results:
Vacuum test low voltage side: current = 0.45A Po = 70WLow side short circuit test: voltage = 11.6V Pcc = 224.3WDetermine:
a. Parameters Rcc and Xcc of the equivalent circuit referring to the secondary.b. Transformer voltage regulation, if feeding a load of 4kVA, fp = 0.75 in delayc. Efficiency if the load is 7kVA, fp = 0.8 inductive
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Chapter 5 Solutions
Electric Motor Control
Ch. 5 - In which diagram do the physical locations of the...Ch. 5 - Which diagram conveys as much information as...Ch. 5 - Prob. 3SQCh. 5 - Which control wiring scheme can cause damage to...Ch. 5 - In developing line or wiring diagrams, in which...Ch. 5 - In which control circuit wire are the overload...Ch. 5 - The control circuit is connected to which lines...Ch. 5 - Prob. 8SQCh. 5 - The contactor coil is connected to which line of a...Ch. 5 - What does the X or 1 mean on a target table?
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