Electromagnetic Field Theory A magnetic vector potential is given by the expression A = (- cos x) (cos y) uz. The flux density at the origin is – 2 ux. – uy. 2 ux. 0. – 2 ux. – uy. 2 ux. 0. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Magnetic current is composed of which of the following? Both conduction and displacement current. Only conduction current. Only displacement current. None of these Both conduction and displacement current. Only conduction current. Only displacement current. None of these ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory How much current must flow in a loop of radius 1m to produce a magnetic field of 1 mA/m? 2 mA. 2.5 mA. 1.5 mA. 1mA. 2 mA. 2.5 mA. 1.5 mA. 1mA. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A copper disc is rotated rapidly below a freely suspended magnetic needle. The magnetic needle starts rotating with velocity less than that of disc and in the same direction. less than that of disc but in opposite direction. equal to that of disc and in the opposite direction. equal to that of disc and in the same direction. less than that of disc and in the same direction. less than that of disc but in opposite direction. equal to that of disc and in the opposite direction. equal to that of disc and in the same direction. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The wave in wave guide has Larger wavelength than in the free space Larger frequency than in the free space Group velocity inversely proportional to wavelength Diminishing wavelength than in the free space Larger wavelength than in the free space Larger frequency than in the free space Group velocity inversely proportional to wavelength Diminishing wavelength than in the free space ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Tropospheric scatter is used with frequencies in the VHF HF UHF VLF VHF HF UHF VLF ANSWER DOWNLOAD EXAMIANS APP
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