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Electromagnetic Field Theory
The divergence of a vector is a scalar, while the curl of a vector is another
None of these
Vector
Unit vector
Scalar
None of these
Vector
Unit vector
Scalar
Answer
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Related Question
Electromagnetic Field Theory
The magnetic vector potential due to a single conductor carrying current is
none of tha above.
finite.
infinite.
zero.
none of tha above.
finite.
infinite.
zero.
Answer
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Electromagnetic Field Theory
A conductor is rotating with in a magnetic field. At which of the positions do the peak voltages occur?
Anywhere.
At an angle of 45° to the axis of the magnetic field.
At right angles to the axis of the magnetic field.
Along the axis of the magnetic field.
Anywhere.
At an angle of 45° to the axis of the magnetic field.
At right angles to the axis of the magnetic field.
Along the axis of the magnetic field.
Answer
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Electromagnetic Field Theory
Which of the following statement regarding waveguides is incorrect?
At frequencies below the cut off value the wave progresses across the waveguide after total reflections
Waveguides can handle large power at UHF and microwaves
Waveguides are usually air filled hollow conducting metallic tubes for transmitting UHF and microwaves
At waveguide can be coupled to a coaxial cable
At frequencies below the cut off value the wave progresses across the waveguide after total reflections
Waveguides can handle large power at UHF and microwaves
Waveguides are usually air filled hollow conducting metallic tubes for transmitting UHF and microwaves
At waveguide can be coupled to a coaxial cable
Answer
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Electromagnetic Field Theory
Poyniting vector has the dimensions
Watt × metre2.
Watt × metre.
Watts/metre2.
Watt/metre.
Watt × metre2.
Watt × metre.
Watts/metre2.
Watt/metre.
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 × 106.
2 × 10-8.
2 × 108.
2 × 10-6.
2 × 106.
2 × 10-8.
2 × 108.
2 × 10-6.
Answer
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