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Electric Circuits

Electric Circuits
Which of the following substance when added to electrolyte promotes smooth deposition?

 Glucose.
 Any of above.
 Gelatine.
 Albumen.

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Electric Circuits
A series circuit consists of R = 20 Ω, L = 20 mH, and AC supply 60 V with f = 100 Hz. The voltage drop across R is

  50.8 V.
  30.6 V.
 40.8 V.
 24.4 V .

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Electric Circuits
In series RLC circuit which of the following represents the Q factor ?

 XL/R
 XC/R
All of these
 VR/V

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

 2.9585.
 2.185.
 2.585.
 1.285.

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Electric Circuits
The resistance of a strip of copper of rectangular cross section is 2 Ω. A metal of resistivity twice that of a copper is coated on its upper surface to a thickness equal to that of copper strip. The resistance of composite strip will be

 4 / 3 Ω.
 3 / 4 Ω.
 3 / 2 Ω.
 6 Ω.

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Electric Circuits
Which of the following may be value of resistivity of copper?

 1.7 X 10 - 4.
 1.7 X 10 - 6.
 1.7 X 10 - 3.
 1.7 X 10 - 5.

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