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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 is finite but torque is zero.
the net force and torque on the coil are both zero.
the net force is zero but torque is finite.
the net force and torque are both finite.
the net force is finite but torque is zero.
the net force and torque on the coil are both zero.
the net force is zero but torque is finite.
the net force and torque are both finite.
Answer
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Electromagnetic Field Theory
For a line characteristic impedance zo terminated is load zo/3, the reflection coefficient is
2/3.
– 1/3.
1/3.
– ½.
2/3.
– 1/3.
1/3.
– ½.
Answer
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Electromagnetic Field Theory
A loop is rotating about x-axis in a magnetic field, B = BO cos(ω + φ) ay. The voltage in the loop is
Due to rotating only.
Zero.
Due to transformer only.
Due to both rotating and transformer action.
Due to rotating only.
Zero.
Due to transformer only.
Due to both rotating and transformer action.
Answer
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The power gain of a half-wave dipole with respect to an isotropic radiator is
3 db
6 db
4.15 db
2.15 db
3 db
6 db
4.15 db
2.15 db
Answer
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The attenuation in waveguide above to cut off frequency
Very high
Very low
Infinite
Zero
Very high
Very low
Infinite
Zero
Answer
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Radiation intensity in a given direction is the
None of these
Power radiated per square metre
Energy radiated per square metre
Power radiated per unit solid angle in that direction
None of these
Power radiated per square metre
Energy radiated per square metre
Power radiated per unit solid angle in that direction
Answer
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