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Electromagnetic Field Theory
The inductance of a long solenoid of length 1000 mm wound uniformly with 3000 turns on a cylindrical paper cable of 60 mm diameter is
3.2 mH.
3.2 H.
32 mH.
3.2 µH.
3.2 mH.
3.2 H.
32 mH.
3.2 µH.
Answer
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Related Question
Electromagnetic Field Theory
Magnetic field intensity at centre of circular coil, of diameter 1 m and carrying a current of 2 A is
4 A/m.
2 A/m.
1 A/m.
8 A/m.
4 A/m.
2 A/m.
1 A/m.
8 A/m.
Answer
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Electromagnetic Field Theory
An infinite non conducting sheet of charge has σ of 10-7 c/m3. Equipotential surface for a potential of 10 volts is.
1.32 mm.
1.77 mm.
0.88 mm.
0.
1.32 mm.
1.77 mm.
0.88 mm.
0.
Answer
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Electromagnetic Field Theory
In case of all flux from the current in coil 1 links with coil 2, the coefficient of coupling will be
0.5.
2.0.
1.0.
Zero.
0.5.
2.0.
1.0.
Zero.
Answer
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Electromagnetic Field Theory
The effective reactance of an inductive coil
remains same irrespective of the frequency.
increases because of stray capacitance as the frequency increases.
none of these.
decreases because of stray capacitance as the frequency increases.
remains same irrespective of the frequency.
increases because of stray capacitance as the frequency increases.
none of these.
decreases because of stray capacitance as the frequency increases.
Answer
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Electromagnetic Field Theory
If E is the electric field intensity, then what is the value of divergence of (curl of E)?
E.
| E |.
Null vector.
Zero.
E.
| E |.
Null vector.
Zero.
Answer
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