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Electromagnetic Field Theory
The radiation pattern of a parabola antenna is
None of these
Omnidirectional
Highly directional
A figure of directional
None of these
Omnidirectional
Highly directional
A figure of directional
Answer
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Related Question
Electromagnetic Field Theory
Biot-Savarts law states the relation between magnetic intensity and
(A), (B), and (D) are all correct.
filament current only.
surface current only.
volume current only.
(A), (B), and (D) are all correct.
filament current only.
surface current only.
volume current only.
Answer
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Electromagnetic Field Theory
In case of antenna the ratio of the power radiated in the desired direction to the power radiated in the opposite direction is known as
Front to back ratio
None of these
Transmission efficiency
Loss coefficient
Front to back ratio
None of these
Transmission efficiency
Loss coefficient
Answer
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Electromagnetic Field Theory
What is the value of magnetic vector potential due to an infinitesimally small current element, evaluated at infinite distance from it?
Unity.
Depends on strength of current element.
Infinity.
Zero.
Unity.
Depends on strength of current element.
Infinity.
Zero.
Answer
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Electromagnetic Field Theory
Conductor is constant and field is varying then emf will be induced. This principle is called
None of these
dynamically induced emf.
static induced emf.
virtually induced emf.
None of these
dynamically induced emf.
static induced emf.
virtually induced emf.
Answer
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Electromagnetic Field Theory
In H-plane metal plate lens the travelling wave front is
Totally retarded
Neither accelerated nor retarded
Accelerated
Retarded
Totally retarded
Neither accelerated nor retarded
Accelerated
Retarded
Answer
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