ELECTROLYSIS AND STORAGE BATTERIES QUIZ

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

8 %

5 %

10 %

6 %

TRUE ANSWER : ?
YOUR ANSWER : ?

Level of electrolyte in a cell should be _____ the level of plates

equal to

above

below

none of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following has lower sp. gravity V

Concentrated H₂SO₄

Dilute H₂SO₄

All of the listed here

Water

TRUE ANSWER : ?
YOUR ANSWER : ?

The ratio of ampere-hour efficiency to watt-hour efficiency of a lead-acid cell is

always greater than one

just one

always less than one

none of the listed here

TRUE ANSWER : ?
YOUR ANSWER : ?

It is noticed that durum charging

the anode becomes chocolate brown in colour (PbCfe) and cathode becomes grey metallic lead (Pb)

energy is absorbed by the cell

all of these

there is a rise in voltage

TRUE ANSWER : ?
YOUR ANSWER : ?

Over charging

all of the listed here

produces excessive gassing

loosens the active material

increases the temperature resulting in buckling of plates

TRUE ANSWER : ?
YOUR ANSWER : ?

Sulphated cells are indicated by

the loss of capacity of the cell

all of the listed here

the decrease of the specific gravity

the low voltage of the cell on discharge

TRUE ANSWER : ?
YOUR ANSWER : ?

Which among the following constitutes the major load for an automobile battery ?

Parking lights

Self starter

Brake light

Spark plugs

TRUE ANSWER : ?
YOUR ANSWER : ?

In order that a hydrometer may float vertically in electrolyte its C.G. should be

lowered

raised

displaced sideways

undisturbed

TRUE ANSWER : ?
YOUR ANSWER : ?

As compared to constant-current system, the constant-voltage system of charging a lead acid cell has the advantage of

increasing cell capacity

reducing time of charging

Both of the listed here

avoiding excessive gassing

TRUE ANSWER : ?
YOUR ANSWER : ?