Electromagnetic Induction Mcqs | Set 5

MCQs 1: The practical illustration of the phenomenon of mutual induction is____________?

A.C generator

D.C dynamo

induction coil

transformer

Answer Explanation

MCQs 2: The polarity of the induced voltage can be determined by using the left-hand generator rule

Yes

Answer Explanation

MCQs 3: Reversing the field or the current will reverse the force on the conductor

Yes

Answer Explanation

MCQs 4: The self-inductance of the coil may be defined as equal to the e.m.f. induced in volts when the current in the circuit changes at the rate of unit Weber turns

Yes

Answer Explanation

MCQs 5: Which circuit element(s) will oppose the change in circuit current ?

Resistance only

Inductance only

Capacitance only

Inductance and capacitance

Answer Explanation

MCQs 6: A coil is wound on iron core which carries current I. The self-induced voltage in the coil is not affected by________________?

variation in coil current

variation in voltage to the coil

change of number of turns of coil

the resistance of magnetic path

Answer Explanation

MCQs 7: A crack in the magnetic path of an inductor will result in________________?

unchanged inductance

increased inductance

zero inductance

reduced inductance

Answer Explanation

MCQs 8: The co-efficient of coupling between two air core coils depends on____________?

self-inductance of two coils only

mutual inductance between two coils only

mutual inductance and self inductance of two coils

none of the above

Answer Explanation

MCQs 9: Current changing from 8 A to 12 A in one second induced 20 volts in a coil. The value of inductance is___________?

5 mH

10 mH

5 H

10 H

Answer Explanation

MCQs 10: A coil induces 350 mV when the current changes at the rate of 1 A/s. The value of inductance is___________?

3500 mH

350 mH

250 mH

150 mH

Answer Explanation

MCQs 1: The practical illustration of the phenomenon of mutual induction is____________?

MCQs 2: The polarity of the induced voltage can be determined by using the left-hand generator rule

MCQs 3: Reversing the field or the current will reverse the force on the conductor

MCQs 4: The self-inductance of the coil may be defined as equal to the e.m.f. induced in volts when the current in the circuit changes at the rate of unit Weber turns

MCQs 5: Which circuit element(s) will oppose the change in circuit current ?

MCQs 6: A coil is wound on iron core which carries current I. The self-induced voltage in the coil is not affected by________________?

MCQs 7: A crack in the magnetic path of an inductor will result in________________?

MCQs 8: The co-efficient of coupling between two air core coils depends on____________?

MCQs 9: Current changing from 8 A to 12 A in one second induced 20 volts in a coil. The value of inductance is___________?

MCQs 10: A coil induces 350 mV when the current changes at the rate of 1 A/s. The value of inductance is___________?

Related Topics