Electromagnetic Field Theory The heating time constant of an electrical machine gives an indication of its overload capacity. cooling. rating. short time rating. overload capacity. cooling. rating. short time rating. 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 Lagging the current Accelerating Retardation Oscillating Lagging the current Accelerating Retardation Oscillating ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Biot-Savarts law states the relation between magnetic intensity and volume current only. (A), (B), and (D) are all correct. filament current only. surface current only. volume current only. (A), (B), and (D) are all correct. filament current only. surface current only. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Which of the following is multiband HF receiving antenna? Conical horn Log-periodic Square loop Folded dipole Conical horn Log-periodic Square loop Folded dipole 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 rotor rotation. magnetic field. induced emf. None of these rotor rotation. magnetic field. induced emf. None of these ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A rectangular loop in the x – z plane bounded by the lines x = 0, x = a, z = 0 and z = b is in a time varying magnetic field is given by B = B0 cosωt + ay. Where B0 is constant, ω is angular frequency and ay unit vector in the y direction. Now the emf induced in the loop is given by ab Bo cosω t. Zero. abω Bo sinω t. Bo ω sinω t. ab Bo cosω t. Zero. abω Bo sinω t. Bo ω sinω t. ANSWER DOWNLOAD EXAMIANS APP
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