A transformer transforms(a) frequency(b) voltage(c) current(d) voltage and current.2. Which of the following is not a basic element ofa transformer?(a) core(b) primary winding(c) secondary winding(d) mutual flux.3. In an ideal transformer,(a) windings have no resistance(b) core has no losses(c) core has infinite permeability(d) all of the above.4. The main purpose of using core in a transformeris to(a) decrease iron losses(b) prevent eddy current loss(c) eliminate magnetic hysteresis(d) decrease reluctance of the common mag-netic circuit.1

Answered: J. A transformer transforms (a)…

J. A transformer transforms (a) frequency (b) voltage (c) current (d) voltage and current. 2. Which of the following is not a basic element c a transformer? (a) core

Electrical Transformers and Rotating Machines

4th Edition

ISBN:9781305494817

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter9: Single-phase Loads For Three-phase Transformers

Section: Chapter Questions

Problem 4RQ

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Question

A transformer transforms
(a) frequency
(b) voltage
(c) current
(d) voltage and current.
2. Which of the following is not a basic element of
a transformer?
(a) core
(b) primary winding
(c) secondary winding
(d) mutual flux.
3. In an ideal transformer,
(a) windings have no resistance
(b) core has no losses
(c) core has infinite permeability
(d) all of the above.
4. The main purpose of using core in a transformer
is to
(a) decrease iron losses
(b) prevent eddy current loss
(c) eliminate magnetic hysteresis
(d) decrease reluctance of the common mag-
netic circuit.
1

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