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 4t3. 12t. 12t3. 24t. 4t3. 12t. 12t3. 24t. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The force on a charge moving with velocity v under the influence of electric and magnetic fields is given by which one of the following q(E + V × B). q(E +V × H). q(E + B × V). q(H + V × E). q(E + V × B). q(E +V × H). q(E + B × V). q(H + V × E). ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory As a result of reflection from a plane conducting wall, electromagnetic waves acquire an apparent velocity greater than the velocity of light in space. This is called the group velocity. velocity of propagation. normal velocity. phase velocity. group velocity. velocity of propagation. normal velocity. phase velocity. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The attenuation in waveguide above to cut off frequency Zero Very high Infinite Very low Zero Very high Infinite Very low ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The frequency range for satellite communication is 3 to 30 kHz 30000 to 300000 MHz 300 to 3000 kHz 3000 to 30000 MHz 3 to 30 kHz 30000 to 300000 MHz 300 to 3000 kHz 3000 to 30000 MHz ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory For a linear electromagnetic circuit, which of the following statement is true? Field energy is lesser than the co-energy. Field energy is greater than the co-energy. Co-energy is zero. Field energy is equal to the co-energy. Field energy is lesser than the co-energy. Field energy is greater than the co-energy. Co-energy is zero. Field energy is equal to the co-energy. ANSWER DOWNLOAD EXAMIANS APP
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