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Electric Circuits

Electric Circuits
Active materials of a lead acid cell are

 dilute H2SO4.
 lead peroxide.
 spongy lead.
 all of above.

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Electric Circuits
In a delta network each element has value R. The value of each element in equivalent star network will be

 R / 6.
 R / 2.
 R / 4.
  R / 3.

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Electric Circuits
From the circuit diagram shown in question 1 find the thevnin voltage.

 3 V.
 5 V.
 1.5 V.
 15 V.

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Electric Circuits
The time required for a pulse to change from 10 % to 90 % of its maximum value is known as

 fall time.
 run time.
 decay time.
 rise time.

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Electric Circuits
Energy efficiency during electroplating is usually in the range

 90 to 99%.
 85 to 90%.
 80 to 85%.
 50 to 80%.

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Electric Circuits
Four capacitors each of 40 µF are connected in parallel, the equivalent capacitance of the system will be

 10 µF
 5 µF
 40 µF
 160 µF

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MORE MCQ ON Electric Circuits

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