A. Pb
B. Pb02
C. PbO
D. PbS04
Related Mcqs:
- The active materials on the positive and negative plates of a fully charged lead-acid battery are_______?
A. lead and lead peroxide
B. lead sulphate and lead
C. lead peroxide and lead
D. none of the above - The active material of the positive plates of silver-zinc batteries is_________?
A. silver oxide
B. lead oxide
C. lead
D. zinc powder - During the idle period of the battery, strong electrolyte tends to change the active material of the cell into____________?
A. Pb02
B. PbSC-4
C. PbO
D. Pb - Those substances of the cell which take active part in chemical combination and hence produce electricity during charging or discharging are known as________materials
A. passive
B. active
C. redundant
D. inert - Excessive formation of lead sulphate on the surface of the plates happens because of___________?
A. allowing a battery to stand in discharged condition for a long time
B. topping up with electrolyte
C. persistent undercharging
D. low level of electrolyte
E. all above - Level of electrolyte in a cell should be ________ the level of plates
A. below
B. equal to
C. above
D. none of the above - Trickle charging of a storage battery helps to___________?
A. maintain proper electrolyte level
B. increase its reserve capacity
C. prevent sulphation
D. keep it fresh and fully charged - 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 - The active materials of a nickel-iron battery are___________?
A. nickel hydroxide
B. powdered iron and its oxide
C. 21% solution of KOH
D. all of the above - Ampere hour capacity of an industrial battery is based on _______ hours discharge rate
A. 8
B. 12
C. 16
D. 24
