All the electrical connections between the battery and vehicle should be by____________?

A. Thin aluminium wires
B. Thin copper wires
C. Rigid cables
D. Flexible cables

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

A. 8
B. 12
C. 16
D. 24

Self charge of a Ni-Fe cell is _______ Edison cell

A. Equal to
B. Less than
C. More than
D. Much more than

The following indicate that battery on charge has attained full charge___________?

A. Colour of electrode
B. Gassing
C. Specific gravity
D. All above

Dry cell is modification of____________?

A. Deniell cell
B. Leclanche cell
C. Lead-acid cell
D. Edison cell

Excessive charging a battery tends to____________?

A. Produce gassing
B. Increase the internal resistance of the battery
C. To corrode the positive plates into lead peroxide thereby weakening them physically
D. Bring about all above changes

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

A. Lowered
B. Raised
C. Undisturbed
D. Displaced sideways

Internal resistance of a cell is due to___________?

A. Resistance of electrolyte
B. Electrode resistance
C. Surface contact resistance between electrode and electrolyte
D. All above

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

A. Capacity of cell will reduce
B. Sulphation of plates will occur
C. Internal resistance will increase
D. All above will occur

In a lead-acid cell, if the specific gravity of sulphuric acid is 1.8, it will require following ratio of acid to water to get mixture of specific gravity of 1.3

A. 6 parts of acid to 4 parts of water
B. 4 parts of acid to 4 parts of water
C. 4 parts of acid to 6 parts of water
D. 4 parts of acid to 8 parts of water