i need the answer quickly 24. When a 400-Hz transformer is operated at 50Hzits kVA rating is(a) raduced to 1/8(b) increased 8 times(c) unaffected(d) increased 64 times.25. At relatively light loads, transformer efficiencyis low because(a) secondary output is low(b) transformer losses are high(c) fixed loss is high in proportion to the output(d) Cu loss is small.26. A 200 kVA transformer has an iron loss of 1 kWand full-load Cu loss of 2kW. Its load kVA cor-responding to maximum efficiency is . kVA........(a) 100(b) 141.4(c) 50(d) 20027. If Cu loss of a transformer at 7/8th full load is4900 W, then its full-load Cu loss would be.......watt.(a) 5600(b) 6400(c) 375(d) 42928. The ordinary efficiency of a given transformeris maximum when(a) it runs at half full-load(b) it runs at full-load(c) its Cu loss equals iron loss(d) it runs slightly overload.

Given: Note : Please note that ,here the spelling of the reduced is mentioned as incorrect, hence…

Answered: 24. When a 400-Hz transformer is…

24. When a 400-Hz transformer is operated at 50 Hz its kVA rating is (a) raduced to 1/8 (b) increased 8 times (c) unaffected (d) increased 64 times.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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