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Electromagnetic Field Theory
The two windings of a transformer have an inductor of 2 H each. If mutual inductor between them is also 2 H, then
none of these.
turns ratio of the transformer is also two.
it is a perfect transformer.
transformer is an ideal transformer.
none of these.
turns ratio of the transformer is also two.
it is a perfect transformer.
transformer is an ideal transformer.
Answer
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Related Question
Electromagnetic Field Theory
Self inductance of magnetic coil is proportional to
1 / N2.
N.
1 / N.
N2.
1 / N2.
N.
1 / N.
N2.
Answer
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Electromagnetic Field Theory
A solid sphere made of insulating material has a radius R and has a total charge Q distributed uniformly in its volume. What is the magnitude of electric field intensity, E, at a distance r (o less than r less than R) inside the sphere
QR/(4π εo r3).
3 Qr/(4 π εo R3).
Qr/(4 π εo R3).
Q/(4 π εo r3).
QR/(4π εo r3).
3 Qr/(4 π εo R3).
Qr/(4 π εo R3).
Q/(4 π εo r3).
Answer
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Electromagnetic Field Theory
The hysteresis loop of a magnetic material has an area of 5 cm2 with the scale given as 1 cm = 2 AT and 1 cm = 50 mwb At 50 Hz; the total hysteresis loss is
25 W.
15 W.
50 W.
20 W.
25 W.
15 W.
50 W.
20 W.
Answer
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Electromagnetic Field Theory
The magnetic vector potential due to a single conductor carrying current is
zero.
none of tha above.
finite.
infinite.
zero.
none of tha above.
finite.
infinite.
Answer
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Electromagnetic Field Theory
Two coils have inductances L1 = 1200 mH and L2 = 800 mH. They are connected in such a way that flux in the two coils aid each other and inductance is measured to be 2500 mH, then Mutual inductance between the coils is ___________ mH.
150.
145.
225.
250.
150.
145.
225.
250.
Answer
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