ELECTROLYSIS AND STORAGE BATTERIES QUIZ

On overcharging a battery

It will raise the specific gravity of the electrolyte

None of these

It will increase the capacity of the battery

It will bring about chemical change in active materials

TRUE ANSWER : ?
YOUR ANSWER : ?

Under normal charging rate, the charging current should be

30% of capacity

20% of capacity

10% of capacity

40% of capacity

TRUE ANSWER : ?
YOUR ANSWER : ?

Ampere hour capacity of an industrial battery is based on ____ hours discharge rate.

10

24

8

12

TRUE ANSWER : ?
YOUR ANSWER : ?

All the electrical connections between the battery and vehicle should be by

flexible cables

thin copper wires

thin aluminium wires

rigid cables

TRUE ANSWER : ?
YOUR ANSWER : ?

Weston standard cell at 20°C has voltage of ____ volts.

0.8

1.2

1.0187

1.5

TRUE ANSWER : ?
YOUR ANSWER : ?

_______ of electrolyte indicates the state of charge of the battery

colour

viscosity

mass

specific gravity

TRUE ANSWER : ?
YOUR ANSWER : ?

Excessive charging a battery tends to

to corrode the positive plates into lead peroxide thereby weakening them physically

increase the internal resistance of the battery

bring about all above changes

produce gassing

TRUE ANSWER : ?
YOUR ANSWER : ?

The common impurity in the electrolyte of lead-acid battery is

iron

lead crystals

dust particles

chlorine

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following primary cells has the highest voltage ?

Manganese-alkaline

Mercury

Carbon-zinc

Lithium

TRUE ANSWER : ?
YOUR ANSWER : ?

The watt-hour efficiency of a lead-acid cell varies between

25 to 35%

40 to 60%

70 to 80%

90 to 95%

TRUE ANSWER : ?
YOUR ANSWER : ?