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Electromagnetic Field Theory
A loop is rotating about x-axis in a magnetic field, B = BO cos(ω + φ) ay. The voltage in the loop is
Zero.
Due to transformer only.
Due to rotating only.
Due to both rotating and transformer action.
Zero.
Due to transformer only.
Due to rotating only.
Due to both rotating and transformer action.
Answer
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Related Question
Electromagnetic Field Theory
A magnetic circuit requires 800 AT to produce a certain quantity of flux in a magnetic circuit. If its excitation coil has 100 turns and 5 Ohm resistance, the voltage to be applied in exciting coil is
8 V.
80 V.
60 V.
40 V.
8 V.
80 V.
60 V.
40 V.
Answer
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Electromagnetic Field Theory
Between a hollow and solid metal sphere, charge reside
None of above.
on outer surface in hollow and throughout in solid.
on outer surface in both.
on outer surface in hollow and throughout in solid
None of above.
on outer surface in hollow and throughout in solid.
on outer surface in both.
on outer surface in hollow and throughout in solid
Answer
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Electromagnetic Field Theory
A coil of 300 turns is wound on a non magnetic core having a mean circumference of 300 mm and a cross sectional area of 300 mm2. The inductance of the coil corresponding to a magnetizing current of 6 A will be
1.1304 μH.
3.768 μH.
113.04 μH.
37.68 μH.
1.1304 μH.
3.768 μH.
113.04 μH.
37.68 μH.
Answer
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Electromagnetic Field Theory
Which of the following will increase the antenna radiation efficiency?
Use of larger section of conductor
Any of the above
Top loading of antenna
Providing insulation on conductor
Use of larger section of conductor
Any of the above
Top loading of antenna
Providing insulation on conductor
Answer
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Electromagnetic Field Theory
In above problem, if the inductance L1 and L2 in series aiding with 30 mH mutual inductance, then total inductance will be
100 mH.
200 mH.
50 mH.
150 mH.
100 mH.
200 mH.
50 mH.
150 mH.
Answer
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