ELECTROLYSIS AND STORAGE BATTERIES QUIZ

Life of the batteries is in the following ascending order.

Lead-acid cell, Edison cell, Nickel cadmium cell

Edison cell, Nickel-cadmium cell, lead-acid cell

Nickel-cadmium cell, Edison cell, lead-acid cell

Lead-acid cell, Nickel-cadmium cell, Edison cell

TRUE ANSWER : ?
YOUR ANSWER : ?

Cells are connected in parallel to

Increase the efficiency

Increase the voltage output

Increase the internal resistance

Increase the current capacity

TRUE ANSWER : ?
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Internal resistance of a cell is reduced by

using vent plug to permit gas formed during discharge

all of the listed here

increasing the plate area

putting plates very close together

TRUE ANSWER : ?
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Cell short circuit results in

low sp. gravity electrolyte

abnormal high temperature

reduced gassing on charge

all of the listed here

TRUE ANSWER : ?
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In alkaline cell the electrolyte is

dilute sulphuric acid

concentrated sulphuric acid

kOH

NaOH

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If a lead-acid cell is discharged below 1.8 V the following will happen.

All of the listed here

Internal resistance will increase

Sulphation of plates will occur

Capacity of cell will reduce

TRUE ANSWER : ?
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Local action in a battery is indicated by

excessive drop in the specific gravity of electrolyte even when the cell is on open circuit

none of the listed here

both of the listed here

excessive gassing under load conditions

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When the lead-acid cell is fully charged, the electrolyte assumes _____ appearance

dull

reddish

bright

milky

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Hydrogen evolved during charging produces explosive mixture when it is more than

8 %

5 %

10 %

6 %

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The effect of sulphation is that the internal resistance

decreases

increases

remains same

none of the listed here

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YOUR ANSWER : ?

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