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Test: Single-Phase Transformers - 3


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10 Questions MCQ Test Electrical Machines for Electrical Engg. | Test: Single-Phase Transformers - 3

Test: Single-Phase Transformers - 3 for Electrical Engineering (EE) 2022 is part of Electrical Machines for Electrical Engg. preparation. The Test: Single-Phase Transformers - 3 questions and answers have been prepared according to the Electrical Engineering (EE) exam syllabus.The Test: Single-Phase Transformers - 3 MCQs are made for Electrical Engineering (EE) 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Single-Phase Transformers - 3 below.
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Test: Single-Phase Transformers - 3 - Question 1

In a transformer the resistance between its primary and secondary should be

Test: Single-Phase Transformers - 3 - Question 2

Gas is usually not liberated due to dissociation of transformer oil unless the oil temperature exceeds

Test: Single-Phase Transformers - 3 - Question 3

For given applied voltage, with the increase in frequency of the applied voltage

Test: Single-Phase Transformers - 3 - Question 4

In an actual transformer the iron loss remains practically constant from noload to fullload because

Test: Single-Phase Transformers - 3 - Question 5

The chemical used in breather is

Test: Single-Phase Transformers - 3 - Question 6

In case of a double cage induction motor, the inner cage has

Test: Single-Phase Transformers - 3 - Question 7

If the supply frequency to the transformer is increased, the iron loss will

Detailed Solution for Test: Single-Phase Transformers - 3 - Question 7

As frequency increases, the flux density in the core decreases but as the iron loss is directly proportional to the frequency hence effect of increased frequency will be reflected in increase of the iron losses.

Test: Single-Phase Transformers - 3 - Question 8

The term 'cogging' is associated with

Test: Single-Phase Transformers - 3 - Question 9

Minimum voltage regulation occurs when the power factor of the load is

Test: Single-Phase Transformers - 3 - Question 10

The highest voltage for transmitting electrical power in India is

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