Transformer Quiz

Transformer Quiz

University

10 Qs

quiz-placeholder

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Transformer Quiz

Transformer Quiz

Assessment

Quiz

Physics

University

Practice Problem

Medium

Created by

purandara malar

Used 3+ times

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10 questions

Show all answers

1.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

A step up transformer increases

(A) frequency

(B) current

(C) voltage

(D) power

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Natural oil cooling is used for transformers upto a rating of

(A) 250 kVA

(B) 500 kVA

(C) 1000 kVA

(D) 3000 kVA

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The chemical used in breather is

(A) silica gel

(B) sodium chloride

(C) silica sand

(D) asbestos fibre

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Transformer cores are built up from laminations rather than from solid metal so that

(A) eddy current loss is reduced

(B) turn ratio is higher than voltage ratio

(C) oil penetrates the core more easily

(D) less insulation is required for the windings

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a transformer the energy is conveyed from primary to secondary

(A) by the flux

(B) through air

(C) through cooling coil

(D) none of the above

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The path of a magnetic flux in a transformer should have

(A) low reluctance

(B) low resistance

(C) high resistance

(D) high reluctance

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The chemical used in breather for transformer should have the quality of

(A) cooling the transformer oil

(B) cleansing the transformer oil

(C) absorbing moisture

(D) ionizing air

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