Electrical Inductors MCQ Questions & Answers | Electrical Engineering

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1.
The winding resistance of a coil can be increased by

A. Increasing the number of turns

B. Using a thinner wire

C. Changing the core material

D. Increasing the number of turns or using thinner wire

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2.
An 18 V power supply is connected across a coil with a winding resistance of 180 Ω. Current flow in the coil is

A. 1 mA

B. 10 mA

C. 100 mA

D. 1 A

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3.
An inductor, a 1 kΩ resistor, and a switch are connected in series across a 6 V battery. At the instant the switch is closed, the inductor voltage is

A. 0 V

B. 6 V

C. 12 V

D. 4 V

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4.
Five inductors are connected in series. The lowest value is 8 µH. If the value of each inductor is twice that of the preceding one, and if the inductors are connected in order of ascending values, the total inductance is

A. 8 H

B. 32 µH

C. 64 µH

D. 248 µH

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5.
A 2 mH, a 3.3 mH, and a 0.2 mH inductor are connected in series. The total inductance is

A. 55 mH

B. Less than 0.2 mH

C. Less than 5.5 mH

D. 5.5 mH

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