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Electromagnetic Field Theory
The transmitting antennas for lower frequencies (below 500 kHz) are generally
Any of the above
Horizontal suspended wire type
Parabolic reflector type
Vertical grounded wire type
Any of the above
Horizontal suspended wire type
Parabolic reflector type
Vertical grounded wire type
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
1 A/m.
2 A/m.
4 A/m.
8 A/m.
1 A/m.
2 A/m.
4 A/m.
8 A/m.
Answer
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Electromagnetic Field Theory
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
2 × 108.
2 × 10-6.
2 × 106.
2 × 10-8.
2 × 108.
2 × 10-6.
2 × 106.
2 × 10-8.
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
1.0.
Zero.
2.0.
0.5.
1.0.
Zero.
2.0.
0.5.
Answer
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Electromagnetic Field Theory
Conductor is constant and field is varying then emf will be induced. This principle is called
virtually induced emf.
dynamically induced emf.
static induced emf.
None of these
virtually induced emf.
dynamically induced emf.
static induced emf.
None of these
Answer
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Electromagnetic Field Theory
A sphere of radius with a uniform charge density ρv C/m3 shall have electric flux density at radius “r = a” equal to
aρv/3 C/m2.
aρv/4 C/m2.
aρv C/m2.
ρv/3 C/m2.
aρv/3 C/m2.
aρv/4 C/m2.
aρv C/m2.
ρv/3 C/m2.
Answer
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