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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-2 section-1

11
Faraday's law states that relative motion between a magnetic field and a coil induces a voltage across the coil.
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Answer & Solution
Answer: Option A
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12
Inductance is indirectly proportional to the square of the number of turns, the permeability, and the cross-sectional area of the core.
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Answer: Option B
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13
A sine wave voltage is applied across an inductor. When the frequency of the voltage is decreased, the current
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Answer: Option A
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14
The current through a 120 mH coil is changing at a rate of 150 mA/s. The voltage induced across the coil is
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Answer: Option B
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15
Two 10 H inductors are in parallel and the parallel combination is in series with a third 10 H inductor. What is the approximate total reactance when a voltage with a frequency of 7 kHz is applied across the circuit terminals?
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Answer: Option C
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16
Energy is stored by an inductor in an electrostatic field.
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Answer: Option B
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17
XL is directly proportional to frequency and inductance.
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Answer: Option A
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18
All coil cores are made of iron.
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Answer: Option B
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19
The term 'choke' is more commonly used in connection with an inductor used to block off high frequencies.
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Answer: Option A
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20
A switch, a 220 Ω resistor, and a 60 mH inductor are in series across a 20 V battery. What is the current through the inductor two time constants after the switch is closed?
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Answer: Option B
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