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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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Related Question
Electromagnetic Field Theory
A conductor is rotating with in a magnetic field. At which of the positions do the peak voltages occur?
At an angle of 45° to the axis of the magnetic field.
Along the axis of the magnetic field.
Anywhere.
At right angles to the axis of the magnetic field.
At an angle of 45° to the axis of the magnetic field.
Along the axis of the magnetic field.
Anywhere.
At right angles to the axis of the magnetic field.
Answer
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Electromagnetic Field Theory
In an inductor current cannot change abruptly. Comment on the statement.
True partially.
False.
True.
Cannot comment.
True partially.
False.
True.
Cannot comment.
Answer
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Electromagnetic Field Theory
A pure inductor when connected across 220 V, 50 Hz supply consumes 100 W. From the above statement it can be concluded that
the above statement is false.
the inductor is made of thin wire.
the inductor has ferrite core.
the inductor is non linear.
the above statement is false.
the inductor is made of thin wire.
the inductor has ferrite core.
the inductor is non linear.
Answer
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Electromagnetic Field Theory
For a line characteristic impedance zo terminated is load zo/3, the reflection coefficient is
2/3.
1/3.
– ½.
– 1/3.
2/3.
1/3.
– ½.
– 1/3.
Answer
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Electromagnetic Field Theory
According to Coulomb’s law, the force of attraction or repulsion, between to electrical charges is
directly proportional to the square of the distance between them.
inversely proportional to the distance between them.
directly proportional to the distance between them.
inversely proportional to the square of the distance between them.
directly proportional to the square of the distance between them.
inversely proportional to the distance between them.
directly proportional to the distance between them.
inversely proportional to the square of the distance between them.
Answer
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