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Electromagnetic Field Theory
The main disadvantage of the two-hole directional coupler is
Low directional coupling
High standing wave ratio
Poor directivity
Narrow bandwidth
Low directional coupling
High standing wave ratio
Poor directivity
Narrow bandwidth
Answer
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Related Question
Electromagnetic Field Theory
An insulated metal sphere of 20 cm diameter is charged by rubbing with charges 2 × 10-8 C. Potential developed will be
0 V.
200 V.
1800 V.
900 V.
0 V.
200 V.
1800 V.
900 V.
Answer
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Electromagnetic Field Theory
A sphere of radius with a uniform charge density ρv C/m3 shall have electric flux density at radius “r = a” equal to
aρv/3 C/m2.
aρv C/m2.
ρv/3 C/m2.
aρv/4 C/m2.
aρv/3 C/m2.
aρv C/m2.
ρv/3 C/m2.
aρv/4 C/m2.
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 inductor is non linear.
the inductor is made of thin wire.
the inductor has ferrite core.
the above statement is false.
the inductor is non linear.
the inductor is made of thin wire.
the inductor has ferrite core.
the above statement is false.
Answer
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Electromagnetic Field Theory
The force required to seperate two surfaces with a contact area measuring 5 cm by 6 cm, when flux density normal to the surface is 0.8 tesla, will be
764 N.
7640 N.
76400 N.
76.4 N.
764 N.
7640 N.
76400 N.
76.4 N.
Answer
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Electromagnetic Field Theory
Electric flux in coulombs emanating from any surface of a cube containing C coulombs of charge at its centre is
4πQ / 6ε.
Q / 4π.
Q / 6ε.
Q / 6.
4πQ / 6ε.
Q / 4π.
Q / 6ε.
Q / 6.
Answer
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