36. The essential condition for parallel opearation oftwo 1- transformers is that they should havethe same(a) polarity(b) kVA rating(c) voltage ratio(d) percentage impedance.37. If the impedance triangles of two transformersoperating in parallel are not identical in shape andsize, the two transformers will(a) share the load unequally(b) get heated unequally(c) have a circulatory secondary current evenwhen unloaded(d) run with different power factors.38. Two transformers A and B having equal outputsand voltage ratios but unequal percentageimpedances of 4 and 2 are operating in parallel.Transformer A will be running over-load by.percent.(a) 50(b) 66(d) 25(c) 33

In this question, We need to choose the correct options What is the essential condition for the…

Answered: 36. The essential condition for…

36. The essential condition for parallel opearation of two 1- transformers is that they should have the same (a) polarity (b) kVA rating (c) voltage ratio (d) percentage impedance.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.64P: The per-unit equivalent circuit of two transformers Ta and Tb connected in parallel, with the same...

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Concept explainers

Three-Phase Transformers

Three-segment transformers are a type of transformer used to transform voltages of electrical systems into three ranges. Two type transformers are shell-type transformer and core type transformer. In brief, it could be described because of the exquisite kinds of configurations.

Transformer

Ever since electricity has been created, people have started using it in its entirety. We see many types of Transformers in the neighborhoods. Some are smaller in size and some are very large. They are used according to their requirements. Many of us have seen the electrical transformer but they do not know what work they are engaged in.

Question

36. The essential condition for parallel opearation of
two 1- transformers is that they should have
the same
(a) polarity
(b) kVA rating
(c) voltage ratio
(d) percentage impedance.
37. If the impedance triangles of two transformers
operating in parallel are not identical in shape and
size, the two transformers will
(a) share the load unequally
(b) get heated unequally
(c) have a circulatory secondary current even
when unloaded
(d) run with different power factors.
38. Two transformers A and B having equal outputs
and voltage ratios but unequal percentage
impedances of 4 and 2 are operating in parallel.
Transformer A will be running over-load by.
percent.
(a) 50
(b) 66
(d) 25
(c) 33

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