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Electromagnetic Field Theory
A loop antenna is a commonly used for
Satellite communication
Radar
Direction finding
All of these
Satellite communication
Radar
Direction finding
All of these
Answer
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Related Question
Electromagnetic Field Theory
Which of the following statement is correct for divergence of electric and magnetic flux densities?
It is zero for the electric flux density.
These are zero for static densities but non zero for time varying densities.
Both are zero.
It is zero for the magnetic flux density.
It is zero for the electric flux density.
These are zero for static densities but non zero for time varying densities.
Both are zero.
It is zero for the magnetic flux density.
Answer
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Electromagnetic Field Theory
A circular loop has its radius increasing at a rate of 2 m/s. The loop placed perpendicular to a constant magnetic field of 0.5 wb/m2. When the radius of the loop is 4 m. the emf induced in the will be
0.4 π V.
0.8 π V.
Zero.
8 π V.
0.4 π V.
0.8 π V.
Zero.
8 π V.
Answer
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Electromagnetic Field Theory
What is the unit of magnetic charge
Ampere meter.
Ampere-meter square.
Coulomb.
Ampere.
Ampere meter.
Ampere-meter square.
Coulomb.
Ampere.
Answer
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Electromagnetic Field Theory
The force required to seperate two surfaces with a contact area measuring 5 cm by 6 cm, when flux density normal to the surface is 0.8 tesla, will be
76400 N.
76.4 N.
7640 N.
764 N.
76400 N.
76.4 N.
7640 N.
764 N.
Answer
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Electromagnetic Field Theory
A magnetic circuit requires 800 AT to produce a certain quantity of flux in a magnetic circuit. If its excitation coil has 100 turns and 5 Ohm resistance, the voltage to be applied in exciting coil is
8 V.
80 V.
60 V.
40 V.
8 V.
80 V.
60 V.
40 V.
Answer
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