Electrical Engineering · Question Bank

Electromagnetic Induction

68 questions · page 4 of 4. Answer in your head first, then check the solution.

📘 EE Mock Board Exam

#61📘 EE Pocket Reviewer RojasEasy

Which of the following is true about an open coil?

AIt has zero inductance and zero resistance

BIt has infinite inductance and infinite resistance

CIt has infinite inductance and zero resistance

DIt has zero inductance and infinite resistance

#62📘 EE Pocket Reviewer RojasEasy

In the Fleming’s left hand rule, the thumb points the direction of what?

ACurrent

BVoltage

CForce

DMagnetic field

#63📘 EE Pocket Reviewer RojasEasy

If the flux in coil 1 links completely with coil 2, how much is the coefficient of coupling?

AZero

BOne

C0.5

DInfinite

#64📘 EE Pocket Reviewer RojasEasy

In which of the following machines does voltage is statically induced?

ATransformer

BAlternator

CDirect-current motor

DDirect-current generator

#65📘 EE Pocket Reviewer RojasEasy

Which law states that the induced emf and current always oppose the cause that produced it?

ALenz law

BOhm’s law

CCoulomb’s law

DFaraday’s law

#66📘 EE Pocket Reviewer RojasEasy

Which of the following is true about the pure inductance of a coil?

AIt prevents the current from changing

BIt delays the change in current

CIt stores energy in an electric field

DIt dissipates power as heat

#67📘 EE Pocket Reviewer RojasEasy

Fleming's left hand rule correlates which of the following parameters?

ACurrent, magnetic field, direction of force

BCurrent, induced emf, direction of force

CMagnetic field, electric field, direction of force

DSelf-inductance, mutual inductance, direction of force

#68📘 EE Pocket Reviewer RojasEasy

What is the name of the induced emf in coil due to the changing current of another neighboring coil?

AStatically induced emf

BDynamically induced emf

CMutually induced emf

DSelf-induced emf

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