Electromagnetic Field Theory A magnetic material has a total flux B of 80 micro Wb with an mmf of 160 AT. The reluctance in ampere turn per weber is 2 × 106. 2 × 10-8. 2 × 10-6. 2 × 108. 2 × 106. 2 × 10-8. 2 × 10-6. 2 × 108. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The wave in wave guide has Group velocity inversely proportional to wavelength Larger wavelength than in the free space Larger frequency than in the free space Diminishing wavelength than in the free space Group velocity inversely proportional to wavelength Larger wavelength than in the free space Larger frequency than in the free space Diminishing wavelength than in the free space ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory When the phase velocity of an EM wave depends on frequency in any medium the phenomenon is called Dispersion Absorption Scattering Polarisation Dispersion Absorption Scattering Polarisation ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory What is the value of skin depth as 100 Hz in a material having μr = 1.0 and & σ = 3.60 × 107 s/m 10 mm. 2.4 mm. 4 mm. 8.4 mm. 10 mm. 2.4 mm. 4 mm. 8.4 mm. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which of following circuit element stores energy in electro-magnetic field? Condenser. Variable Resistor. Inductor. Capacitor. Condenser. Variable Resistor. Inductor. Capacitor. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A conductor is rotating with in a magnetic field. At which of the positions do the peak voltages occur? Anywhere. At right angles to the axis of the magnetic field. At an angle of 45° to the axis of the magnetic field. Along the axis of the magnetic field. Anywhere. At right angles to the axis of the magnetic field. At an angle of 45° to the axis of the magnetic field. Along the axis of the magnetic field. ANSWER DOWNLOAD EXAMIANS APP
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