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Electromagnetic Field Theory
The wave in wave guide has
Larger wavelength than in the free space
Diminishing wavelength than in the free space
Group velocity inversely proportional to wavelength
Larger frequency than in the free space
Larger wavelength than in the free space
Diminishing wavelength than in the free space
Group velocity inversely proportional to wavelength
Larger frequency than in the free space
Answer
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Related Question
Electromagnetic Field Theory
When a wave is incident from the more dense into a less dense medium at an angle equal to or exceeding the critical angle, the wave suffers total internal __________ .
Transmission
Reflection
Refraction
None of these
Transmission
Reflection
Refraction
None of these
Answer
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Electromagnetic Field Theory
What is the unit of magnetic charge
Coulomb.
Ampere-meter square.
Ampere.
Ampere meter.
Coulomb.
Ampere-meter square.
Ampere.
Ampere meter.
Answer
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Electromagnetic Field Theory
Two identical circular coils, one closed and another is little split (not enclosed) are placed in an uniform magnetic field which decrease at a constant rate. If the plane to the coils are perpendicular to the field which of the following statements is true?
Joule heating does not occur in each of the coils.
Equal joule heating occurs in both coils.
An emf is induced in split coil.
An emf is induced in both coils.
Joule heating does not occur in each of the coils.
Equal joule heating occurs in both coils.
An emf is induced in split coil.
An emf is induced in both coils.
Answer
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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
The magnetic field required to reduce the residual magnetism to zero is called
Coercivity.
Hysteresis.
Retentivity.
Saturation magnetism.
Coercivity.
Hysteresis.
Retentivity.
Saturation magnetism.
Answer
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