2.Fringing effect is a phenomena occurs in...(a)Transformers.(b) Electrical field.(c) Air gap(d) All of the above.3. The kVA rating of an ordinary 2-winding transformer is increased when connected as anautotransformer because(a) transformation ratio is increased(b) secondary voltage is increased(c) energy is transferred both inductively and conductivity(d) secondary current is increased.4. The....... of the hysteresis loop is a measure of energy lost per cycle(a) area.(b) Type.(c) Frequency(d) No one of the above.5. At relatively light loads, transformer efficiency is 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.6. In an ideal transformer,(a) windings have no resistance(b) core has no losses(c) core has infinite permeability(d) all of the above.7. In electromagnetic circuits, path of eddy current is........(a) Parallel to the path of the flux.(b) Perpendicular to the path of the flux. -(c) Out of the path of the flux.(d) No one of the above.8. The main purpose of performing open-circuit test on a transformer is to measure its(a) Cu loss(b) core loss(c) total loss(d) both Cu and total losses.9. During short-circuit test, the iron loss of a transformer is negligible because(a) the entire input is just sufficient to meet Cu losses only(b) flux produced is a small fraction of the normal flux(c) iron core becomes fully saturated(d) supply frequency is held constant.10. A transformer has negative voltage regulation when its load power factor is(a) zero(b) unity(c) leading(d) lagging.1

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Answered: 2.Fringing effect is a phenomena occurs…

2.Fringing effect is a phenomena occurs in ........... (a) Transformers. (b) Electrical field. (c) Air gap (d)All of the above.

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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