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 × 10-6. 2 × 108. 2 × 10-8. 2 × 106. 2 × 10-6. 2 × 108. 2 × 10-8. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A waveguide operated below cut off frequency can be used as Phase shifter An isolator None An attenuator Phase shifter An isolator None An attenuator ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Parabolic and lens antenna used at Microwave frequency Medium frequency Low frequency High frequency Microwave frequency Medium frequency Low frequency High frequency ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The energy stored in the magnetic field in a solenoid 30 cm long and 3 cm diameter wound with 1000 turns of wire carrying a current at 10 amp, is 1.15 joule. 0.015 joule. 0.15 joule. 0.015 joule. 1.15 joule. 0.015 joule. 0.15 joule. 0.015 joule. 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 normal velocity. velocity of propagation. phase velocity. group velocity. normal velocity. velocity of propagation. phase velocity. group velocity. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which of following circuit element stores energy in electro-magnetic field? Capacitor. Condenser. Variable Resistor. Inductor. Capacitor. Condenser. Variable Resistor. Inductor. ANSWER DOWNLOAD EXAMIANS APP
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