Electromagnetic Field Theory A point pole has a strength of 4π × 10-4 weber. The force in newtons on a point pole of 4π × 1.5 × 10-4 weber placed at a distance of 10 cm from it will be 20 N. 7.5 N. 3.75 N. 15 N. 20 N. 7.5 N. 3.75 N. 15 N. ANSWER DOWNLOAD EXAMIANS APP
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 12t. 4t3. 12t3. 24t. 12t. 4t3. 12t3. 24t. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A conductor of length 100 cm moves at right angles to a magnetic field of flux density 1.5 Wb/m2 with a velocity of 50 m/s. The induced emf in the conductor will be 50 V. 75 V. 37.5 V. 150 V. 50 V. 75 V. 37.5 V. 150 V. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A rectangular loop in the x – z plane bounded by the lines x = 0, x = a, z = 0 and z = b is in a time varying magnetic field is given by B = B0 cosωt + ay. Where B0 is constant, ω is angular frequency and ay unit vector in the y direction. Now the emf induced in the loop is given by ab Bo cosω t. abω Bo sinω t. Zero. Bo ω sinω t. ab Bo cosω t. abω Bo sinω t. Zero. Bo ω sinω t. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The wave in wave guide has Larger wavelength than in the free space Diminishing wavelength than in the free space Larger frequency than in the free space Group velocity inversely proportional to wavelength Larger wavelength than in the free space Diminishing wavelength than in the free space Larger frequency than in the free space Group velocity inversely proportional to wavelength ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory In microwave communication links, when fading due to rain attenuation occurs then technique adopted for solving the problem would include Antenna replacement and feed correction Polarization shifting and code diversity Path diversity and frequency diversity Amplitude timing and phase correction Antenna replacement and feed correction Polarization shifting and code diversity Path diversity and frequency diversity Amplitude timing and phase correction ANSWER DOWNLOAD EXAMIANS APP
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