Home >> Electrical Machines-Transformer MCQ-1
Electrical Machines-Transformer MCQ-1 Question 1:-
The basic function of a transformer is to change
(a) the level of the voltage.
(b) the power level.
(c) the power factor.
(d) the frequency.
Electrical Machines-Transformer MCQ Question 2:-
In a transformer, electrical power is transferred from primary to secondary
(a) through air.
(b) by magnetic flux.
(c) through an insulating medium.
(d) none of these.
Electrical Machines-Transformer MCQ Question 3:-
The efficiency of a power transformer is around
(a) 50%.
(b) 60%.
(c) 80%.
(d) 95%
Electrical Machines-Transformer MCQ Question 4:-
Transformer action requires a
(a) constant magnetic flux.
(b) increasing magnetic flux.
(c) alternating magnetic flux.
(d) alternating electric flux.
Electrical Machines-Transformer MCQ Question 5:-
The two windings of a transformer are
(a) conductively linked.
(b) inductively linked.
(c) not linked at all.
(d) electrically linked.
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