Electromagnetic Field Theory A waveguide operated below cut off frequency can be used as An attenuator None An isolator Phase shifter An attenuator None An isolator Phase shifter ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which of the following will increase the antenna radiation efficiency? Use of larger section of conductor Providing insulation on conductor Top loading of antenna Any of the above Use of larger section of conductor Providing insulation on conductor Top loading of antenna Any of the above ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Fleming's right hand rule may be applied to an electric generator to find out the direction of magnetic field. rotor rotation. None of these induced emf. magnetic field. rotor rotation. None of these induced emf. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory An insulated metal sphere of 20 cm diameter is charged by rubbing with charges 2 × 10-8 C. Potential developed will be 900 V. 1800 V. 0 V. 200 V. 900 V. 1800 V. 0 V. 200 V. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Mutual inductance between two magnetically coupled coils depends on the number of their turns. cross sectional area of their common core. all of above. permeability of core. the number of their turns. cross sectional area of their common core. all of above. permeability of core. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The magnetic field at any point on the axis of current carrying circular coil will be perpendicular to axis. zero. parallel to axis. at an angle 45o with the axis. perpendicular to axis. zero. parallel to axis. at an angle 45o with the axis. ANSWER DOWNLOAD EXAMIANS APP
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