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Electromagnetic Field Theory
The property of the coil by which a counter emf is induced in it when the current through the coil changes is known as
series aiding inductance.
capacitance.
mutual inductance.
self inductance.
series aiding inductance.
capacitance.
mutual inductance.
self inductance.
Answer
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Related Question
Electromagnetic Field Theory
1 Tesla =
1 wb/ m2.
1 wb- m2.
1 wb .
1 wb/m.
1 wb/ m2.
1 wb- m2.
1 wb .
1 wb/m.
Answer
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Electromagnetic Field Theory
A magnetic material has a total flux B of 80 micro Wb with an mmf of 160 AT. The reluctance in ampere turn per weber is
2 × 108.
2 × 106.
2 × 10-8.
2 × 10-6.
2 × 108.
2 × 106.
2 × 10-8.
2 × 10-6.
Answer
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Electromagnetic Field Theory
Electric field intensity (E) at ant point in an electric field is equal to
(potential gradient)1/3.
(potential gradient)1/2.
(potential gradient)2.
potential gradient.
(potential gradient)1/3.
(potential gradient)1/2.
(potential gradient)2.
potential gradient.
Answer
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Electromagnetic Field Theory
A pure inductor is connected across a voltage source. Find the active power drawn by the inductor?
either 1 or 2
maximum
0
None of these
either 1 or 2
maximum
0
None of these
Answer
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Electromagnetic Field Theory
A magnetic field B = 5 × 10-2 uz T exerts a force on 0.02 m conductor along the x-axis. The conductor carried a current of 5 mA in the – ux direction. What force must be applied to the conductor to hold it in position
- 5 × 10-5 uy N.
5 × 10-5 uz N.
5 × 10-5 uy N.
5 × 10-5 ux N.
- 5 × 10-5 uy N.
5 × 10-5 uz N.
5 × 10-5 uy N.
5 × 10-5 ux N.
Answer
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