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Electric Circuits

Electric Circuits
The value of specific gravity of acid when a lead acid battery is fully charged is

 2.185.
 2.9585.
 2.585.
 1.285.

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Electric Circuits
A periodic voltage having the Fourier series V(t)= {1 + 4sinω0t}

 21 W.
 1 W.
 11 W.
 24.5 W.

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Electric Circuits
Internal resistance of ideal current source is

 infinite
 finite
 100 ohms
 zero

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Electric Circuits
Three identical resistor are connected in star across a 3 phase 550 V supply dissipating a total power of 300 W the line current is ____________ A.

 2.56
 3.149
 1
 0.5

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Electric Circuits
A circuit contains two unequal resistor in parallel

 voltage drops are according to their resistive value.
 currents in both are same.
 heat losses in both are same.
 voltage drops across both are same.

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Electric Circuits
Electrolyte for silver plating is

  dilute sulphuric acid.
  potassium nitrate solution.
  any of above.
  double cyanide of silver and potassium solution.

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