Electromagnetic Field Theory In an iron core coil the iron core is removed so that the coil becomes an air core coil. The inductance of the coil will initially increase and then decrease. decrease. remain the same. increase. initially increase and then decrease. decrease. remain the same. increase. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which of the following will increase the antenna radiation efficiency? Providing insulation on conductor Use of larger section of conductor Top loading of antenna Any of the above Providing insulation on conductor Use of larger section of conductor Top loading of antenna Any of the above ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Between a hollow and solid metal sphere, charge reside on outer surface in both. on outer surface in hollow and throughout in solid on outer surface in hollow and throughout in solid. None of above. on outer surface in both. on outer surface in hollow and throughout in solid on outer surface in hollow and throughout in solid. None of above. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A pure inductor is connected across a voltage source. Find the active power drawn by the inductor? 0 maximum None of these either 1 or 2 0 maximum None of these either 1 or 2 ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A waveguide operated below cut off frequency can be used as An attenuator An isolator None Phase shifter An attenuator An isolator None Phase shifter ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory If a and b are the dimensions of waveguide then a = 3b a = 2b a = b a = b/4 a = 3b a = 2b a = b a = b/4 ANSWER DOWNLOAD EXAMIANS APP
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