
EIE Quiz 1 (Activity 2)
Authored by Ashwanth S
Science
University
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40 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
For a transformer copper losses are also known as
variable loss
iron loss
eddy current loss
losses in shunt parameter
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
The magnetic material for the core needs to be made of soft iron where its permeability is high
to reduce eddy current loss
to reduce hysteresis loss
to avoid fringing in the core
to reduce copper loss in the winding
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Why transformers work with A.C. current but not D.C.
A.C current produces changing magnetic field.
D.C current produces changing magnetic field.
D.C current is weak
A.C current is powerful
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Transformer is a device which transforms A.C electric power of one circuit to another , keeping the _______ same.
Voltage
Current
Frequency
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Laminated insulation are normally used in the transformer:
To reduce the hysteresis effect
To increase the hysteresis effect
To reduce the effect of eddy current
To increase the effect of eddy current
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
If dc voltage is applied to the primary of a transformer it may:
Work
Burn the winding
Give lower voltage on the secondary side
Give higher voltage on the secondary side
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Transformer ratings are usually expressed in terms of :
Voltage
KVA
kWh
KW
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