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Electromagnetic Field Theory
A Yagi antenna has a driven antenna
With one or more directors
Only
With a reflector
With a reflector and one or more directors
With one or more directors
Only
With a reflector
With a reflector and one or more directors
Answer
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Related Question
Electromagnetic Field Theory
The magnetic field at any point on the axis of current carrying circular coil will be
perpendicular to axis.
parallel to axis.
zero.
at an angle 45o with the axis.
perpendicular to axis.
parallel to axis.
zero.
at an angle 45o with the axis.
Answer
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Electromagnetic Field Theory
A metal surface with 1 meter radius and surface charge density of 20 coulombs / m2 is enclosed in a 10 m side cube. The total outward electric displacement normal to the surface of the cube is
80π coulombs.
40π coulombs.
none of these.
10π coulombs.
80π coulombs.
40π coulombs.
none of these.
10π coulombs.
Answer
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Electromagnetic Field Theory
A sphere of 20 cm radius contains electrical charge of density 2/(r sinθ) c/m3. What is the total charge contained within the sphere?
0.
None of above.
0.335/sinθ c.
0.335 C.
0.
None of above.
0.335/sinθ c.
0.335 C.
Answer
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Electromagnetic Field Theory
Which of the following represents ohms law
All of these
I = GV
V = RI
J = σE
All of these
I = GV
V = RI
J = σE
Answer
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Electromagnetic Field Theory
inductance (L2) in parallel without mutual coupling will be
20 mH.
10 mH.
5 mH.
15 mH.
20 mH.
10 mH.
5 mH.
15 mH.
Answer
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