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Electromagnetic Field Theory
An emf of 16 volts is induced in a coil of inductance 4 H. The rate of change of current must be
4 A / s.
32 A / s.
16 A / s.
64 A / s.
4 A / s.
32 A / s.
16 A / s.
64 A / s.
Answer
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Related Question
Electromagnetic Field Theory
Conductor is varying and field is fixed then emf will be induced. This principle is called
None of these
both A and B.
dynamically induced emf.
static induced emf.
None of these
both A and B.
dynamically induced emf.
static induced emf.
Answer
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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 of the networks is half that of the other
The impedance of one is the complex conjugate of the other
The impedance of one is equal to that of the other
None of these
The impedance of one of the networks is half that of the other
The impedance of one is the complex conjugate of the other
The impedance of one is equal to that of the other
Answer
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Electromagnetic Field Theory
In order to minimize loss due to hysteresis the magnetic material should have
small B-H loop area.
high hysteresis coefficient.
large coercivity.
high resistivity.
small B-H loop area.
high hysteresis coefficient.
large coercivity.
high resistivity.
Answer
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Electromagnetic Field Theory
A vector field A = p In is given in Cartesian coordinates. In cylindrical coordinates it will be represented as
A = sinφ Ir.
A = cosφ Ir - sinφ Ir.
A = cosφ Ir + sinφ Iφ.
A = cosφ Ir.
A = sinφ Ir.
A = cosφ Ir - sinφ Ir.
A = cosφ Ir + sinφ Iφ.
A = cosφ Ir.
Answer
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Electromagnetic Field Theory
Coulombs law for the force between electric charges most closely resembles with
Newtons law of motion.
Newtons law of gravitation.
Law of conservation of energy.
Gauss theorem.
Newtons law of motion.
Newtons law of gravitation.
Law of conservation of energy.
Gauss theorem.
Answer
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