Electromagnetic Field Theory Which of the following statement regarding waveguides is incorrect? At frequencies below the cut off value the wave progresses across the waveguide after total reflections At waveguide can be coupled to a coaxial cable Waveguides can handle large power at UHF and microwaves Waveguides are usually air filled hollow conducting metallic tubes for transmitting UHF and microwaves At frequencies below the cut off value the wave progresses across the waveguide after total reflections At waveguide can be coupled to a coaxial cable Waveguides can handle large power at UHF and microwaves Waveguides are usually air filled hollow conducting metallic tubes for transmitting UHF and microwaves ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A point pole has a strength of 4π × 10-4 weber. The force in newtons on a point pole of 4π × 1.5 × 10-4 weber placed at a distance of 10 cm from it will be 3.75 N. 7.5 N. 15 N. 20 N. 3.75 N. 7.5 N. 15 N. 20 N. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A waveguide operated below cut off frequency can be used as None Phase shifter An isolator An attenuator None Phase shifter An isolator An attenuator ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which of following is true for a purely inductive circuit ? Apparent power of the circuit is zero. Reactive power of the circuit is zero. Any capacitance even if present in the circuit will not be charged. Actual power of the circuit is zero. Apparent power of the circuit is zero. Reactive power of the circuit is zero. Any capacitance even if present in the circuit will not be charged. Actual power of the circuit is zero. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A sphere of 20 cm radius contains electrical charge of density 2/(r sinθ) c/m3. What is the total charge contained within the sphere? 0.335 C. 0. None of above. 0.335/sinθ c. 0.335 C. 0. None of above. 0.335/sinθ c. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Magnetic current is composed of which of the following? None of these Only displacement current. Only conduction current. Both conduction and displacement current. None of these Only displacement current. Only conduction current. Both conduction and displacement current. ANSWER DOWNLOAD EXAMIANS APP
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