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Electrical Inductors MCQ Questions & Answers | Electrical Engineering

Learn Electrical Inductors MCQ questions & answers are available for a Electrical Engineering students to clear GATE exams, various technical interview, competitive examination, and another entrance exam. Electrical Inductors MCQ question is the important chapter for a Electrical Engineering and GATE students. Page-3 section-1

21
An ohmmeter is connected across an inductor and the pointer indicates zero ohms. The inductor is
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Answer & Solution
Answer: Option C
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22
When the current through an inductor decreases, the amount of energy stored in the electromagnetic field
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Answer: Option B
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23
When the current through an inductor is cut in half, the amount of energy stored in the electromagnetic field
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Answer: Option A
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24
The following coils are in parallel: 75 µH, 40 µH, 25 µH, and 15 µH. The total inductance is approximately
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Answer: Option A
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25
Inductors add in parallel.
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Answer: Option B
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26
A 320 µH coil is in series with a 3.3 kΩ resistor. How long does it take for current to build up to its full value?
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Answer: Option C
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27
A 240 µH inductor is equivalent to a
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Answer: Option A
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28
The inductance of an iron-core coil decreases if
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Answer: Option A
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29
The permeability of a core material is an indication of the ability of the material to establish a magnetic field.
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Answer: Option A
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30
Two inductors, L1 and L2, are in parallel. L1 has a value of 25 µH and L2 a value of 50 µH. The parallel combination is in series with L3, a 20 µH coil. The entire combination is across an ac source of 60 Vrms at 300 kHz. The total rms current is
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Answer: Option B
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