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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.
 12t3.
 24t.
 12t.

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Electromagnetic Field Theory
Which of following is not a unit of flux?

 All of above.
 Telsa.
 Weber.
 Maxwell.

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Electromagnetic Field Theory
The core of coil length is 200 mm. The inductance of coil is 6 mH. If the core length is doubled, all other quantities, remaining the same, the inductance will be

 3 mH.
 48 mH.
 24 mH.
 12 mH.

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Electromagnetic Field Theory
If n is the polarization vector and k is the direction of propagation plane electromagnetic wave, then

 n. k = 0.
 n = K.
 n × k = 0.
 n = - k.

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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

1.5
2.5
4.5
3.5

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Electromagnetic Field Theory
If a and b are the dimensions of waveguide then

a = b
a = 3b
a = b/4
a = 2b

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MORE MCQ ON Electromagnetic Field Theory

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