Electromagnetic Field Theory The transmitting antennas for lower frequencies (below 500 kHz) are generally Parabolic reflector type Any of the above Vertical grounded wire type Horizontal suspended wire type Parabolic reflector type Any of the above Vertical grounded wire type Horizontal suspended wire type ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory In above problem the induced emf will be reduced to half if the conductor moves an angle of 30° to the direction of field. 45° to the direction of field. 75° to the direction of field. 60° to the direction of field. 30° to the direction of field. 45° to the direction of field. 75° to the direction of field. 60° to the direction of field. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which of the following will increase the antenna radiation efficiency? Any of the above Providing insulation on conductor Top loading of antenna Use of larger section of conductor Any of the above Providing insulation on conductor Top loading of antenna Use of larger section of conductor ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A circular ring is carrying uniformly distributed charge q and a point charge – Q on the axis of the ring. The magnitude of dipole moment of the charge system is (Assume distance between centre of ring and point charge is d and radius of ring R) QR. QR2/d. QD. Q√(R2 + d2). QR. QR2/d. QD. Q√(R2 + d2). ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory MUF is highest in periods of greatest sunspot activity. False True False True ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Poyniting vector has the dimensions Watt × metre2. Watt/metre. Watts/metre2. Watt × metre. Watt × metre2. Watt/metre. Watts/metre2. Watt × metre. ANSWER DOWNLOAD EXAMIANS APP
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