Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Chapter 52, Problem 8SQ
To determine
Explain the process of how a belt slack can be maintained on the top as shown in Figure 52-6.
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A 100-kVA, 2500/125-V, 50-Hz, step-down transformer has the following parameters: R1= 1.5Ω, X1= 2.8Ω, R2= 15mΩ, X2=20mΩ, Rc1= 3kΩ, Xm1= 5kΩ
The transformer delivers 85% of the rated load at a terminal voltage of 115 V and a power factor of 0.866 lagging. Determine (a) the efficiency, and (b) the voltage regulation. Draw the phasor diagram of the transformer.
Use the approximate equivalent circuit referred to the secondary side.
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Chapter 52 Solutions
Electric Motor Control
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