Electrical Engineering Multiple Choice – Electromagnetic Induction MCQs Part 1
Contents
- 1 The inductive reactance a coil having negligible resistance and having 50 volts across it with 10 mA current will be
- 2 Mutual inductance between two magnetically coupled coils depends on
- 3 In an iron core coil iron core is removed so that the coil becomes an air cored coil. The inductance of coil will
- 4 Higher the self-inductance of a coil
- 5 Which of following is a unit of inductance
The inductive reactance a coil having negligible resistance and having 50 volts across it with 10 mA current will be
The inductive reactance a coil having negligible resistance and having 50 volts across it with 10 mA current will be
- 10 ohms
- 50 ohms
- 500 ohms
- 5000 ohms
Correct answer: 4. 5000 ohms
Mutual inductance between two magnetically coupled coils depends on
Mutual inductance between two magnetically coupled coils depends on
- All of the above
- Cross-sectional area of their common core
- Permeability of the core
- The number of their turns
Correct answer: 1. All of the above
In an iron core coil iron core is removed so that the coil becomes an air cored coil. The inductance of coil will
In an iron core coil iron core is removed so that the coil becomes an air cored coil. The inductance of coil will
- Decrease
- Increase
- Initially increase and then decrease
- Remain the same
Correct answer: 1. Decrease
Higher the self-inductance of a coil
Higher the self-inductance of a coil
- Greater the flux produced by it
- Lesser its weber-turns
- Longer the delay in establishing steady current through it
- Lower the EMF induced
Correct answer: 3. Longer the delay in establishing steady current through it
Which of following is a unit of inductance
Which of following is a unit of inductance
- Ampere turns
- Henry
- Ohm
- Weber/metre
Correct answer: 2. Henry