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Electric Circuits

Electric Circuits
For ideal tank circuit what is the value of dynamic impedance?

 ∞
 0
 Both
None of these

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Electric Circuits
Disadvantages of constant k type filter

  characteristic impedance unchanged in pass band.
  both A and B.
  none of these.
  attenuation does not increase rapidly beyond cut off frequency.

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Electric Circuits
One ampere hour charge is equivalent to

 3600 coulombs.
 36 coulombs.
 360 coulombs.
 36000 coulombs.

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Electric Circuits
Ceq of two capacitors connected in series is given by

 C1C2.
 C1 + C2.
 C1 = C2.
 C1 C2 / (C1 + C2).

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Electric Circuits
The resistance of a conductor of diameter d and length l is R Ω. If the diameter of the conductor is halved and its length is doubled, the resistance will be

 8R Ω
 R Ω
 2R Ω
 4R Ω

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Electric Circuits
Image impedance can be written by using short circuit impedance(Zsc)and open circuit impedance(Zoc) as

 Zsc/Zoc
  (Zsc . Zoc)½
 Zsc+Zoc
 Zsc-Zoc

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