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Electric Circuits

Electric Circuits
Which metal is deposited for electro forming?

  Silver.
  Chromium.
  Iron.
  Nickel.

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Electric Circuits
In RLC parallel circuit if current through capacitor and inductor is equal. Then What is the power factor?

 zero
 leading
 lagging
 unity

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Electric Circuits
Disadvantages of constant k type filter

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

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Electric Circuits
According to duality principle a series inductor (L) can be represented as

 Series C.
 Parallel C.
 Series L.
 Parallel L.

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Electric Circuits
Fall time is the time required for a pulse to decrease from 90 to ________% if its maximum values

 5
 20
 10
 15

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Electric Circuits
A parallel plate capacitor contain there dielectric layers of 1, 2 and 3 respectively and thickness of dielectric layers are 0.2 mm, 0.3 mm and 0.4 mm respectively. If area of plate is 20 cm2. What is the value of capacitance?

 36.6 pF.
 None of them.
 32 pF.
 30 pF.

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