Electromagnetic Field Theory A voltage waveform V(t) = 12t2 is applied across a 1H inductor for t = 0, with initial current through it being zero. The current through the inductor for t = 0 is given by 4t3. 24t. 12t. 12t3. 4t3. 24t. 12t. 12t3. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Two identical circular coils, one closed and another is little split (not enclosed) are placed in an uniform magnetic field which decrease at a constant rate. If the plane to the coils are perpendicular to the field which of the following statements is true? Equal joule heating occurs in both coils. An emf is induced in both coils. Joule heating does not occur in each of the coils. An emf is induced in split coil. Equal joule heating occurs in both coils. An emf is induced in both coils. Joule heating does not occur in each of the coils. An emf is induced in split coil. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory The property of the coil by which a counter emf is induced in it when the current through the coil changes is known as self inductance. series aiding inductance. mutual inductance. capacitance. self inductance. series aiding inductance. mutual inductance. capacitance. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A long wire composed of a smooth round conductor runs above and parallel to the ground (assumed to be a large conducting plane). A high voltage exits between the conductor and the ground. The maximum electric stress occur at The ground surface. Midway between the conductor and ground. The upper surface of the conductor. The lower surface of the conductor. The ground surface. Midway between the conductor and ground. The upper surface of the conductor. The lower surface of the conductor. 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. cooling. rating. overload capacity. short time rating. cooling. rating. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory According to maximum power transfer theorem, the maximum power is absorbed by one network from another network when None of these The impedance of one is the complex conjugate of the other The impedance of one of the networks is half that of the other The impedance of one is equal to that of the other None of these The impedance of one is the complex conjugate of the other The impedance of one of the networks is half that of the other The impedance of one is equal to that of the other ANSWER DOWNLOAD EXAMIANS APP
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