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Electromagnetic Field Theory
The field at any point on the axis of a current carrying coil will be
at angle of 45° with the axis.
parallel to axis.
perpendicular to the axis.
zero.
at angle of 45° with the axis.
parallel to axis.
perpendicular to the axis.
zero.
Answer
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Related Question
Electromagnetic Field Theory
If n is the polarization vector and k is the direction of propagation plane electromagnetic wave, then
n. k = 0.
n × k = 0.
n = K.
n = - k.
n. k = 0.
n × k = 0.
n = K.
n = - k.
Answer
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Electromagnetic Field Theory
The heating time constant of an electrical machine gives an indication of its
short time rating.
rating.
overload capacity.
cooling.
short time rating.
rating.
overload capacity.
cooling.
Answer
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Electromagnetic Field Theory
The property of the coil by which a counter emf is induced in it when the current through the coil changes is known as
self inductance.
series aiding inductance.
mutual inductance.
capacitance.
self inductance.
series aiding inductance.
mutual inductance.
capacitance.
Answer
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Electromagnetic Field Theory
The shape of B-H curve for air gap is
hyperbola.
ellipse.
parabola.
straight line.
hyperbola.
ellipse.
parabola.
straight line.
Answer
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Electromagnetic Field Theory
The main disadvantage of the two-hole directional coupler is
Low directional coupling
Narrow bandwidth
High standing wave ratio
Poor directivity
Low directional coupling
Narrow bandwidth
High standing wave ratio
Poor directivity
Answer
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