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Electric Circuits

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

 10
 5
 20
 15

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Electric Circuits
Which variety of copper has the best mechanical strength ?

  Annealed copper.
  Soft copper.
  Cast copper.
  Hard drawn copper.

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Electric Circuits
Which resistor will be physically larger in size?

 1 M Ω, 1/2 W.
 1 k Ω, 1 W.
 10 Ω, 50 W.
 100 Ω, 10 W.

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Electric Circuits
A 50 μF capacitor is charged to retain 10 MJ of energy by a constant charging current of 1 A. Determine the voltages across the capacitor?

 20 V.
 60 V.
 30 V.
 50 V.

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Electric Circuits
If c1 = 8 μF, c2 = 4 μF, c3 = 7 μF c1, c2 are in series with c3 in parallel; effective capacitance will be

 9.67 μF.
 6 μF.
 2.21 μF.
 3 μF.

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Electric Circuits
Which material has extremely large resistance?

None of these
 Semiconductor
 Insulator
 Conductor

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MORE MCQ ON Electric Circuits

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