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Electromagnetic Field Theory

Electromagnetic Field Theory
XEROX machine is working on

 peltier effect.
 heating effect of current.
 magnetic effect.
 electrostatic effect.

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Electromagnetic Field Theory
MUF is depend upon

11 year sun spot cycle
Received frequency by receiver
Electron density of the ionospheric layer
Height of ionospheric layer

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Electromagnetic Field Theory
The operation of electric generators and motors depend on the intraction between magnetic field and

  Electric current.
 Commutator.
 Copper conductors.
 Electric fields.

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Electromagnetic Field Theory
A voltage waveform V(t) = 12t2 is applied across a 1H inductor for t = 0, with initial current through it being zero. The current through the inductor for t = 0 is given by

 12t3.
 4t3.
 12t.
 24t.

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Electromagnetic Field Theory
A square corner reflector is used in

Radio astronomy
All of these
Tv broadcast
Point to point communication

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Electromagnetic Field Theory
If in a 1 mF capacitor, an instantaneous displacement current of 1 A is to be established in the spaces between its plates then it is possible by applying

 106 volts.
 106 volts/sec.
 106 Amp.
 106 Amp/sec.

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MORE MCQ ON Electromagnetic Field Theory

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