Electrical Engineering Multiple Choice – Electromagnetic Induction MCQs Part 3
Contents
- 1 The self inductances of two coils are 8 mH and 18 mH respectively. If value of coefficient of coupling is 0.5, the mutual inductance of coils is
- 2 A conductor having 2 meters length moves at right angle to a magnetic field of flux density 1 tesla with a velocity of 12.5 m/s. The induced EMF in the conductor will be
- 3 An electrical conductor carries 125 amps of current under 60° to a magnetic field of 1.1 tesla. The approximate force on the conductor will be
- 4 The direction of induced EMF can be found using which law/rule
- 5 Two coils having self-inductances of 10 H and 2 H, the mutual inductance being zero. If two coils are connected in series, total inductance will be
The self inductances of two coils are 8 mH and 18 mH respectively. If value of coefficient of coupling is 0.5, the mutual inductance of coils is
The self inductances of two coils are 8 mH and 18 mH respectively. If value of coefficient of coupling is 0.5, the mutual inductance of coils is
- 26 mH
- 56 mH
- 6 mH
- 8 mH
Correct answer: 3. 6 mH
A conductor having 2 meters length moves at right angle to a magnetic field of flux density 1 tesla with a velocity of 12.5 m/s. The induced EMF in the conductor will be
A conductor having 2 meters length moves at right angle to a magnetic field of flux density 1 tesla with a velocity of 12.5 m/s. The induced EMF in the conductor will be
- 15 V
- 20 V
- 25 V
- 50 V
Correct answer: 3. 25 V
An electrical conductor carries 125 amps of current under 60° to a magnetic field of 1.1 tesla. The approximate force on the conductor will be
An electrical conductor carries 125 amps of current under 60° to a magnetic field of 1.1 tesla. The approximate force on the conductor will be
- 120 N
- 240 N
- 360 N
- 520 N
Correct answer: 1. 120 N
The direction of induced EMF can be found using which law/rule
The direction of induced EMF can be found using which law/rule
- Fleming’s right hand rule
- Kirchhoff s voltage law
- Laplace’s law
- Lenz’s law
Correct answer: 4. Lenz’s law
Two coils having self-inductances of 10 H and 2 H, the mutual inductance being zero. If two coils are connected in series, total inductance will be
Two coils having self-inductances of 10 H and 2 H, the mutual inductance being zero. If two coils are connected in series, total inductance will be
- 12 H
- 24 H
- 4 H
- 8 H
Correct answer: 1. 12 H