Electrical Engineering Mcqs Practice Test

Question 1

The direction of magnetic lines of force is________________?

Accepted Answer

B. from north pole to south pole

Question 2

A permeable substance is one_____________?

Accepted Answer

D. through which the magnetic lines of force can pass very easily

Question 3

A magnetic field exists around____________?

Accepted Answer

D. moving charges

Question 4

The materials having low retentivity are suitable for making_____________?

Accepted Answer

B. temporary magnets

Question 5

Tesla is a unit of_____________?

Accepted Answer

C. flux density

Question 6

Ferrites are materials

Accepted Answer

C. ferromagnetic

Question 7

The two conductors of a transmission line carry equal current I in opposite directions. The force on each conductor is________________?

Accepted Answer

B. proportional to X

Question 8

Air gap has_________eluctance as compared to iron or steel path?

Accepted Answer

B. lower

Question 9

Which of the following is a vector quantity ?

Accepted Answer

B. Magnetic field intensity

Question 10

A material which is slightly repelled by a magnetic field is known as_____________?

Accepted Answer

B. diamagnetic material

Question 11

Fleming’s left hand rule is used to find_________________?

Accepted Answer

C. direction of force on a current carrying conductor in a magnetic field

Question 12

Magnetising steel is normals difficult because____________?

Accepted Answer

D. it has low permeability

Question 13

When an iron piece is placed in a magnetic field_____________?

Accepted Answer

B. the magnetic lines of force will bend away from their usual paths in order to pass through the piece

Question 14

The ratio of intensity of magnetisation to the magnetisation force is known as_____________?

Accepted Answer

B. susceptibility

Question 15

Materials subjected to rapid reversal of magnetism should have______________?

Accepted Answer

B. high permeability and low hysteresis loss

Question 16

The unit of relative permeability is_____________?

Accepted Answer

D. it is dimensionless

Question 17

Indicate which of the following material does not retain magnetism permanently

Accepted Answer

A. Soft iron

Question 18

The force between two long parallel conductors is inversely proportional to_____________?

Accepted Answer

D. distance between the conductors

Question 19

The left hand rule correlates to______________?

Accepted Answer

D. current, magnetic field and direction of force on a conductor

Question 20

A conductor of length L has current I passing through it, when it is placed parallel to a magnetic field. The force experienced by the conductor will be______________?

Accepted Answer

A. zero