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ITI
Electrician
Electrician Set-2
Magnetism and Capacitors
14

Magnetism and Capacitors MCQ with Answers

14) How can you increase the pulling strength of an electromagnet?

Increase the field intensity

Reduce the current in the coil

Reduce the number of turns in the coil

Increase the B-H curve of the material

Answer is:

Increase the field intensity

Magnetism and Capacitors MCQ with Answers

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Related Magnetism and Capacitors MCQ with Answers

15) Which defines the flux density is always lagging behind the magnetising force?

Hysteresis

Magnetic intensity

Magnetic induction

Residual magnetism

Answer is:

Hysteresis

16) What is the effect on surrounding metal placed in a magnetic field?

Hysteresis

Skin effect

Eddy current

Dielectric stress

Answer is:

Eddy current

17) In which device the air capacitors are used?

TV tuner

Oscillator

Loudspeaker

Radio receiver

Answer is:

Radio receiver

18) What will happen, if the polarized electrolytic capacitor is reversely connected?

No effect on the capacitor

Explode due to excessive heat

Current is reduced in the circuit

Value of capacitance will be increased

Answer is:

Explode due to excessive heat

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