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Electromagnetic Field Theory
How much current must flow in a loop of radius 1m to produce a magnetic field of 1 mA/m?
1.5 mA.
1mA.
2 mA.
2.5 mA.
1.5 mA.
1mA.
2 mA.
2.5 mA.
Answer
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Related Question
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
For a linear electromagnetic circuit, which of the following statement is true?
Field energy is greater than the co-energy.
Field energy is equal to the co-energy.
Field energy is lesser than the co-energy.
Co-energy is zero.
Field energy is greater than the co-energy.
Field energy is equal to the co-energy.
Field energy is lesser than the co-energy.
Co-energy is zero.
Answer
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Electromagnetic Field Theory
The shape of B-H curve for air gap is
parabola.
hyperbola.
ellipse.
straight line.
parabola.
hyperbola.
ellipse.
straight line.
Answer
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Electromagnetic Field Theory
Ohm’s law in point from field theory can be expressed as
V = IR.
R = ρ × ( l / A).
J = E / σ.
J = σE.
V = IR.
R = ρ × ( l / A).
J = E / σ.
J = σE.
Answer
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Electromagnetic Field Theory
The operation of electric generators and motors depend on the intraction between magnetic field and
Copper conductors.
Electric fields.
Commutator.
Electric current.
Copper conductors.
Electric fields.
Commutator.
Electric current.
Answer
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