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Electromagnetic Field Theory

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

 4t3.
 12t.
 24t.
 12t3.

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Electromagnetic Field Theory
An open wire transmission line having a characteristic impedance of 600 ohms is terminated by a resistive load of 900 O. The standing wave ratio will be

3.5
2.5
4.5
1.5

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Electromagnetic Field Theory
A sphere of 20 cm radius contains electrical charge of density 2/(r sinθ) c/m3. What is the total charge contained within the sphere?

 None of above.
 0.335/sinθ c.
 0.
 0.335 C.

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Electromagnetic Field Theory
A square corner reflector is used in

Tv broadcast
All of these
Point to point communication
Radio astronomy

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Electromagnetic Field Theory
The frequency range for satellite communication is

3000 to 30000 MHz
30000 to 300000 MHz
3 to 30 kHz
300 to 3000 kHz

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Electromagnetic Field Theory
In case of surface waves the field strength at a point is directly proportional to

Distance of the point from the antenna
Wave frequency
Antenna height
Current of the antenna

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MORE MCQ ON Electromagnetic Field Theory

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