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Electromagnetic Field Theory

Electromagnetic Field Theory
When a conductor moves in the field, so that it makes an angle 8 with the lines of flux, the force F is given as : F = Bl sin2 0.

Yes
No

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Electromagnetic Field Theory
In an impedance smith chart, a clockwise movement along a constant resistance circle gives rise to

An increase in the value of reactance
Decrease in the value of reactance
No change in the reactance value
No change in the impedance value

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Electromagnetic Field Theory
RF inductor are characterized by

 low current rating and high resistance.
 low current rating and low resistance.
 high current rating and low resistance.
 high current rating and high resistance.

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Electromagnetic Field Theory
A vector field A = p In is given in Cartesian coordinates. In cylindrical coordinates it will be represented as

 A = cosφ Ir.
 A = sinφ Ir.
 A = cosφ Ir + sinφ Iφ.
 A = cosφ Ir - sinφ Ir.

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Electromagnetic Field Theory
A metal surface with 1 meter radius and surface charge density of 20 coulombs / m2 is enclosed in a 10 m side cube. The total outward electric displacement normal to the surface of the cube is

 40π coulombs.
 10π coulombs.
 80π coulombs.
 none of these.

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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

2.5
4.5
1.5
3.5

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