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Electromagnetic Field Theory
Conductor is static and the field is varying then emf will be induced. This principle is called
virtually induced emf.
dynamically induced emf.
none of these
static induced emf.
virtually induced emf.
dynamically induced emf.
none of these
static induced emf.
Answer
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Related Question
Electromagnetic Field Theory
In an iron core coil the iron core is removed so that the coil becomes an air core coil. The inductance of the coil will
increase.
decrease.
remain the same.
initially increase and then decrease.
increase.
decrease.
remain the same.
initially increase and then decrease.
Answer
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Electromagnetic Field Theory
A potential field is given by V = 3x2 y – yz. The electric field at P(2, -1, 4) is
12 Ix - Iz V/m.
12 Ix + 8 Iy + Iz V/m.
12 Ix - 8 Iy - Iz V/m.
12 Ix - 8 Iy V/m.
12 Ix - Iz V/m.
12 Ix + 8 Iy + Iz V/m.
12 Ix - 8 Iy - Iz V/m.
12 Ix - 8 Iy V/m.
Answer
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Electromagnetic Field Theory
Between a hollow and solid metal sphere, charge reside
None of above.
on outer surface in hollow and throughout in solid
on outer surface in both.
on outer surface in hollow and throughout in solid.
None of above.
on outer surface in hollow and throughout in solid
on outer surface in both.
on outer surface in hollow and throughout in solid.
Answer
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Electromagnetic Field Theory
The main purpose of choke is
to pass low frequencies.
to pass high frequencies.
none of above.
to block low frequencies.
to pass low frequencies.
to pass high frequencies.
none of above.
to block low frequencies.
Answer
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Electromagnetic Field Theory
In above question no. 9, the average force on the core to reduce the air gap will be
832.29 N.
1666.22 N.
3332.47 N.
6664.8 N.
832.29 N.
1666.22 N.
3332.47 N.
6664.8 N.
Answer
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