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Electric Circuits

Electric Circuits
Which metal is deposited for electro forming?

  Chromium.
  Silver.
  Nickel.
  Iron.

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Electric Circuits
Which of the following can not be connected in series unless they are identical?

 Resistance.
 Voltage source.
 Current source.
 Both of above.

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Electric Circuits
At which of the following frequency voltage across capacitor has maximum value for series circuit ?

 Less than resonance frequency
 Equal to resonance frequency
 Zero frequency
 Greater than resonance frequency

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Electric Circuits
A coil with negligible resistance has 50 V across it with 10 mA. The inductive reactance is

 50 ohms.
 1000 ohms.
 5000 ohms.
 500 ohms.

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Electric Circuits
Three parallel resistive branches are connected across a DC supply. The ratio of the branch resistances are given as R1:R2:R3 :: 2:4:6. The ratio of the branch currents is

 2:4:6.
 2:3:6.
 6:4:2.
 6:3:2.

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Electric Circuits
Cells are connected in parallel in order to increase

 efficiency.
 voltage rating.
 life of the cells.
 current capacity.

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