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Electromagnetic Field Theory
A square corner reflector is used in
Radio astronomy
All of these
Point to point communication
Tv broadcast
Radio astronomy
All of these
Point to point communication
Tv broadcast
Answer
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Related Question
Electromagnetic Field Theory
The main disadvantage of the two-hole directional coupler is
Low directional coupling
Narrow bandwidth
High standing wave ratio
Poor directivity
Low directional coupling
Narrow bandwidth
High standing wave ratio
Poor directivity
Answer
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Electromagnetic Field Theory
The emf induced in a conductor rotating in bipolar field is
none of these.
AC.
DC.
DC and AC both.
none of these.
AC.
DC.
DC and AC both.
Answer
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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
4t3.
12t.
12t3.
24t.
4t3.
12t.
12t3.
24t.
Answer
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Electromagnetic Field Theory
Voltage applied across a dielectric produces an electrostatic field 50 times greater than air. The dielectric constant of the dielectric will be
20.
10.
50.
5.
20.
10.
50.
5.
Answer
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Electromagnetic Field Theory
If an electric current carrying coil is placed in a uniform magnetic field in the direction of magnetic induction, then
the net force and torque are both finite.
the net force is zero but torque is finite.
the net force is finite but torque is zero.
the net force and torque on the coil are both zero.
the net force and torque are both finite.
the net force is zero but torque is finite.
the net force is finite but torque is zero.
the net force and torque on the coil are both zero.
Answer
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