Electromagnetic Field Theory The energy stored in the magnetic field in a solenoid 10 cm long and 4 cm diameter wound with 2000 turns of wire carrying a current at 20 amp, is 30 joules. 24 joules. 12 joules. 15 joules. 30 joules. 24 joules. 12 joules. 15 joules. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory A wire 1 m long carries a current of 5A and is at an angle of 30o with B = 1.5 wb/m2. Magnitude of force is 2 N. 2.5 N. 5 N. 3.75 N. 2 N. 2.5 N. 5 N. 3.75 N. 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 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 exists between the conductor and the ground. The maximum electric stress occurs at lower surface of the conductor. the ground surface. midway between the conductor and ground. upper surface of the conductor. lower surface of the conductor. the ground surface. midway between the conductor and ground. upper surface of the conductor. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory For DC voltage an inductor is virtually a short circuit. depends on magnitude of voltage. depends on polarity. open circuit. short circuit. depends on magnitude of voltage. depends on polarity. open circuit. ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic Field Theory Electric flux in coulombs emanating from any surface of a cube containing C coulombs of charge at its centre is Q / 6. Q / 6ε. Q / 4π. 4πQ / 6ε. Q / 6. Q / 6ε. Q / 4π. 4πQ / 6ε. ANSWER DOWNLOAD EXAMIANS APP
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