Electromagnetic Field Theory Two infinite parallel metal plates are charged with equal surface charge density of the same polarity. The electric field in the gap between the plates is zero. dependent on coordinates of field points. same as that produced by one plate. double the field produced by one plate. zero. dependent on coordinates of field points. same as that produced by one plate. double the field produced by one plate. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory According to Coulomb’s law, the force of attraction or repulsion, between to electrical charges is inversely proportional to the distance between them. inversely proportional to the square of the distance between them. directly proportional to the distance between them. directly proportional to the square of the distance between them. inversely proportional to the distance between them. inversely proportional to the square of the distance between them. directly proportional to the distance between them. directly proportional to the square of the distance between them. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A metal surface with 1 meter radius and surface charge density of 20 coulombs / m2 is enclosed in a 10 m side cube. The total outward electric displacement normal to the surface of the cube is 10π coulombs. 80π coulombs. none of these. 40π coulombs. 10π coulombs. 80π coulombs. none of these. 40π coulombs. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory An inductor designed with 400 turns coil wound on an iron core of 16 cm2 cross sectional area and with a cut of air gap length of 1 mm. The coil is connected to a 230 V, 50 Hz supply. Neglected coil resistance, core loss, iron reluctance and leakage inductance. Find the current in the inductor. 4.56 A. 2.28 A. 18.08 A. 9.04 A. 4.56 A. 2.28 A. 18.08 A. 9.04 A. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The main purpose of choke is to pass low frequencies. none of above. to pass high frequencies. to block low frequencies. to pass low frequencies. none of above. to pass high frequencies. to block low frequencies. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The attenuation in waveguide above to cut off frequency Very low Infinite Very high Zero Very low Infinite Very high Zero ANSWER DOWNLOAD EXAMIANS APP
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