Electromagnetic Field Theory A metal sphere with 1 m radius and a surface charge density of 10 coulombs/m2 is enclosed in a cube of 10 m side. The total outward electric displacement normal to the surface of the cube is 5 C. 40π C. 10 C. None of above. 5 C. 40π C. 10 C. None of above. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory An electric field on a place described by its potential V = 20 (r -1 + r-2) where r is the distance from the source. The field is due to A quardra pole. A dipole. Both of A and B. A monopole. A quardra pole. A dipole. Both of A and B. A monopole. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The potential that appears at a point in space due to the current which caused it is called potential Accelerating Lagging the current Oscillating Retardation Accelerating Lagging the current Oscillating Retardation ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The critical frequency of ‘F’ layer is greater than 30 MHz. False True False True ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The emf induced in a conductor rotating in bipolar field is DC and AC both. none of these. DC. AC. DC and AC both. none of these. DC. AC. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The heating time constant of an electrical machine gives an indication of its overload capacity. short time rating. rating. cooling. overload capacity. short time rating. rating. cooling. ANSWER DOWNLOAD EXAMIANS APP
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