Electromagnetic-theory Questions Set 78:
The flux lines of two energized coils overlapping on each other will give
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A magnetic field B = 32 × 10-6 T and the area dS is 2.8 m2. Find the current density, J.
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The magnetic moment of a coil with a current of ______ and an area of 3.2 square units is equal to 36 units.
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If the ratio of secondary to primary turns in an ideal transformer is 4:5, what will be the ratio of power output to power input?
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A magnetic material has a total flux B of 80 micro Wb with an MMF of 160 AT. The reluctance in ampere turn per weber is _____.
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When a magnetic needle is placed in a non-uniform magnetic field, it experiences:
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A particle of charge q and mass m moves in a circular orbit of radius r with angular speed ω. The ratio of the magnitude of its magnetic moment to that of its angular momentum depends on
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Whenever the magnetic flux changes with respect to an electric conductor or a coil, an EMF is induced in the conductor. This is known as Faraday's
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In the case of DC shunt motors, the speed is dependent on back e.m.f. only because
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According to Coulomb's law, the force of attraction or repulsion between two electrical charges is
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