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Electromagnetic Field Theory

Electromagnetic Field Theory
Which of the following impedance inversion is obtained?

A quarter wave line
Short-circuited stub
A half wave line
Balun transformer

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Electromagnetic Field Theory
Two coupled coils with L1 = L2 = 0.6 H have a coupling coefficient of K = 0.8. The turns ratio N1/N2 is

 4.
 0.5.
 2.
 1.

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Electromagnetic Field Theory
The attenuation in waveguide above to cut off frequency

Very high
Zero
Infinite
Very low

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Electromagnetic Field Theory
A plane wave magnetic field is represented by Bx = cos(y – ct). The electric and magnetic fields will be zero in the direction

 None of these.
 Ey = Ez = 0, By = Bz = 0.
 Ex = Ey = 0, Bx = By = 0.
 Ex = Ey = 0, By = Bz = 0.

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Electromagnetic Field Theory
If E is the electric field intensity, then what is the value of divergence of (curl of E)?

 Null vector.
 Zero.
 E.
 | E |.

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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
1.5
2.5
4.5

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