Exercise: Transformers

Questions for: Transformers

A(n) ___ is sometimes constructed as a variable transformer.
A:
autotransformer
B:
center-tapped transformer
C:
multiple-tap transformer
D:
multiple-winding transformer
Answer: A
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A(n) _____ transformer is usually used for audio or power applications.
A:
iron-core
B:
air-core
C:
ferrite-core
D:
All of the above
Answer: A
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___ is the concept of one coil inducing a voltage into another coil.
A:
Electrical isolation
B:
Self-inductance
C:
Mutual inductance
D:
Coefficient of coupling
Answer: C
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The voltage V2 is _____ in the given circuit.

A:
36.7 V
B:
73.3 V
C:
110 V
D:
220 V


Answer: A
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A step-up transformer will ___ to the secondary.
A:
increase the current
B:
increase the voltage
C:
increase the power
D:
decrease the voltage
Answer: B
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