Electromagnetic Field Theory The frequency of the power wave associated with an electromagnetic wave having field as E = e-z/δ cos(ω - zδ) is given by ω/2π. ω/4π. ω. ω / π. ω/2π. ω/4π. ω. ω / π. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The core of coil length is 200 mm. The inductance of coil is 6 mH. If the core length is doubled, all other quantities, remaining the same, the inductance will be 48 mH. 12 mH. 24 mH. 3 mH. 48 mH. 12 mH. 24 mH. 3 mH. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The hysteresis loop of a magnetic material has an area of 5 cm2 with the scale given as 1 cm = 2 AT and 1 cm = 50 mwb At 50 Hz; the total hysteresis loss is 25 W. 50 W. 20 W. 15 W. 25 W. 50 W. 20 W. 15 W. 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? 1.5 mA. 2 mA. 2.5 mA. 1mA. 1.5 mA. 2 mA. 2.5 mA. 1mA. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The shape of B-H curve for air gap is hyperbola. parabola. straight line. ellipse. hyperbola. parabola. straight line. ellipse. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The power gain of a half-wave dipole with respect to an isotropic radiator is 6 db 3 db 4.15 db 2.15 db 6 db 3 db 4.15 db 2.15 db ANSWER DOWNLOAD EXAMIANS APP
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