Electronics - Inductors

Exercise :: Inductors - General Questions

36. 

How long until the current is at a maximum?

mcq8_1032_1.gif

A. 0 mu.jpgs
B. 5 mu.jpgs
C. 15 mu.jpgs
D. 25 mu.jpgs

Answer: Option B

Explanation:

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37. 

Find VR and VL.

mcq8_1034_1.gif

A. VR = 41.6 V, VL = 78.4 V
B. VR = 48 V, VL = 110 V
C. VR = 56 V, VL = 106 V
D. VR = 60 V, VL = 60 V

Answer: Option C

Explanation:

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38. 

If 360 Vac is the output of a 300-turn secondary winding, what is the input voltage when the primary winding has 150 turns?

A. 2.4 Vac
B. 150 Vac
C. 180 Vac
D. 720 Vac

Answer: Option C

Explanation:

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39. 

When a magnet enters a coil and a voltage is induced, the process is known as:

A. an alternation
B. self-inductance
C. counter emf
D. flux linkage

Answer: Option D

Explanation:

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40. 

What term is used to describe the action of magnetic flux from one circuit that cuts across the conductors of another circuit?

A. self-inductance
B. rectification
C. mutual inductance
D. magnetism

Answer: Option C

Explanation:

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41. 

Reactance in an inductive circuit will:

A. increase with frequency
B. decrease with frequency
C. be independent from frequency
D. depend on the value of XC

Answer: Option A

Explanation:

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42. 

A turns ratio of 5 for a transformer implies:

A. more primary turns than secondary turns
B. more secondary current than primary current
C. larger source impedance than load impedance
D. more secondary turns than primary turns

Answer: Option D

Explanation:

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