Study mode · no timer

Magnetism and Electromagnetism

Study 85 Electrical Engineering MCQs with correct answers and explanations.

Answers and explanations are always visible Take this test

1Electrical EngineeringMedium

Two infinitely long parallel conductors in vacuum any separated 1 metre between centers >then a current of 1 ampere flows the. uk each conductor, produce on each other a force of________?

A2x 1(T7 N/m)

B2 x KT3 N/m

C2 x 1(T2 N/m)

D2 x 10″5 N/m

Correct answer

A. 2x 1(T7 N/m)

Explanation

The correct answer is 2x 1(T7 N/m).

2Electrical EngineeringMedium

One telsa is equal to________?

A1 Wb/m

B1 Wb/m2

C1 mWb/m2

D1 Wb/mm2

Correct answer

B. 1 Wb/m2

Explanation

The correct answer is 1 Wb/m2.

3Electrical EngineeringMedium

Reciprocal of permeability is________?

Apermittivity

Bconductance

Csusceptibility

Dreluctivity

Correct answer

D. reluctivity

Explanation

The correct answer is reluctivity.

4Electrical EngineeringMedium

Which of the following is a vector quantity?

AMagnetic potential

BRelative permeability

CMagnetic field intensity

DFlux density

Correct answer

C. Magnetic field intensity

Explanation

The correct answer is Magnetic field intensity.

5Electrical EngineeringMedium

The bar magnet has________?

Athe dipole moment

Bnone of the above

CA. and B. both

Dmonopole moment

Correct answer

A. the dipole moment

Explanation

The correct answer is the dipole moment.

6Electrical EngineeringMedium

The unit of flux is the same as that of________?

Apole strength

Bresistance

Cpermeance

Dreluctance

Correct answer

A. pole strength

Explanation

The correct answer is pole strength.

7Electrical EngineeringMedium

Which of the following statements is correct?

AThe magnetic flux inside an exciting coil is lower than its outside surface

BThe magnetic flux inside the exciting coil is greater than its outside surface

CThe magnetic flux inside the exciting coil is same as on its outside surface

DThe magnetic flux inside an exciting coil is zero

Correct answer

B. The magnetic flux inside the exciting coil is greater than its outside surface

Explanation

The correct answer is The magnetic flux inside the exciting coil is greater than its outside surface.

8Electrical EngineeringMedium

The working of a meter is based on the use of a permanent magnet. In order to protect the meter functioning from stray magnetic fields________?

Aa soft iron shielding is used

Bmeter is surrounded by strong magnetic fields

Ca shielding of anon-magnetic material is used

Da plastic shielding is provided

Correct answer

A. a soft iron shielding is used

Explanation

The correct answer is a soft iron shielding is used.

9Electrical EngineeringMedium

The relative permeability of materials is not constant

Aferromagnetic

Bdiamagnetic

Cinsulating

Dparamagnetic

Correct answer

A. ferromagnetic

Explanation

The correct answer is ferromagnetic.

10Electrical EngineeringMedium

Substances which have permeability less than the permeability of free space are known as________?

Aparamagnetic

Bdiamagnetic

Cferromagnetic

Dbipolar

Correct answer

B. diamagnetic

Explanation

The correct answer is diamagnetic.

Which of the following statements is correct?

AThe magnetic flux inside an exciting coil is lower than its outside surface

BThe magnetic flux inside the exciting coil is greater than its outside surface

CThe magnetic flux inside the exciting coil is same as on its outside surface

DThe magnetic flux inside an exciting coil is zero

Correct answer

B. The magnetic flux inside the exciting coil is greater than its outside surface

Explanation

The correct answer is The magnetic flux inside the exciting coil is greater than its outside surface.