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TRANSFORMER

Total questions: 10

Worksheet time: 3mins

Name
Class
Date
1.

HOW MANY WINDINGS ARE THERE IN AUTOTRANSFORMER?

a)

TWO

b)

ONE

c)

THREE

2.

AUTO TRANSFORMER WORKS ON -----------INDUCTION.

a)

SELF

b)

MUTUAL

c)

NONE

3.

APPLICATION OF CURRENT TRANSFORMER IS--------

a)

POTENTIAL TRANSFORMER

b)

CLAMP-ON METER

c)

CLIPPER

4.

ANOTHER NAME FOR POTENTIAL TRANSFORMER IS------------

a)

SERIES TRANSFORMER

b)

PARALLEL TRANSFORMER

c)

EQUAL TRANSFORMER

5.

ANOTHER NAME SERIES TRANSFORMER IS --------------

a)

POTENTIAL TRANSFORMER

b)

CURRENT TRANSFORMER

c)

PARALLEL TRANSFORMER

6.

EFFICIENCY OF COMMERCIAL TRANSFORMERS ARE ------

a)

0% TO 30%

b)

30% TO 79%

c)

95% TO 99%

7.

IDEAL TRANSFORMERS WILL HAVE ------ EFFICIENCY

a)

2%

b)

5%

c)

98%

d)

100%

8.

IN -------- TRANSFORMER LOSSES ARE ZERO.

a)

PRACTICAL

b)

IDEAL

c)

ISOLATION

9.

MARK THE REASON FOR CHOOSING SILICON STEEL AS CORE IN TRANSFORMER

a)

HIGH PERMEABILITY

b)

HIGH HYSTERESIS LOSS

c)

HIGH EDDY CURRENT LOSS

10.

POWER LOSSES ARE RISES -------- OF THE TRANSFORMER.

a)

VIBRATION

b)

TEMPERATURE