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Electric Circuits

Electric Circuits
Galvanizing is the coating of

 lead.
 chromium.
 zinc.
 brass.

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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 - 3.
 1.7 X 10 - 6.
 1.7 X 10 - 5.

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Electric Circuits
R1 = 36 Ω and R2 = 75 Ω, each having tolerance of ±5% are connected in series. The value of resultant resistance is

 111 ± 7.23 Ω.
  111 ± 5.55 Ω.
  111 ± 0 Ω.
 111 ± 2.77 Ω.

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Electric Circuits
Purpose of using capacitor is / are

 increase p.f of inductive load circuit.
 all of these.
 to do phase split in AC 1 phase motor.
 effect DC filter in electronic circuit.

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Electric Circuits
Among the options which metal has the highest electrical conductivity?

 Aluminium.
 Stranded aluminium.
 Copper.
 Steel.

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Electric Circuits
In a series resonant circuit impedance is

 none of these.
 minimum.
 zero.
 maximum.

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MORE MCQ ON Electric Circuits

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