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Electromagnetic Field Theory
Which of following circuit element stores energy in electro-magnetic field?
Variable Resistor.
Condenser.
Inductor.
Capacitor.
Variable Resistor.
Condenser.
Inductor.
Capacitor.
Answer
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Related Question
Electromagnetic Field Theory
The frequency of the power wave associated with an electromagnetic wave having field as E = e-z/δ cos(ω - zδ) is given by
ω/2π.
ω.
ω / π.
ω/4π.
ω/2π.
ω.
ω / π.
ω/4π.
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
50 W.
20 W.
15 W.
25 W.
50 W.
20 W.
15 W.
25 W.
Answer
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Electromagnetic Field Theory
In an iron core coil the iron core is removed so that the coil becomes an air core coil. The inductance of the coil will
decrease.
remain the same.
initially increase and then decrease.
increase.
decrease.
remain the same.
initially increase and then decrease.
increase.
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
50 mH.
150 mH.
200 mH.
100 mH.
50 mH.
150 mH.
200 mH.
100 mH.
Answer
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Electromagnetic Field Theory
Tropospheric scatter is used with frequencies in the
VLF
VHF
HF
UHF
VLF
VHF
HF
UHF
Answer
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