01. In an Edison cell, the electrolyte used is
a. Sodium Chloride
b .Ammonium Sulphate
c. Potassium hydroxide
d. Hydrochloric acid
02. The life of a lead acid battery is expected to be
a. Six month
b. One year
c. two to five years
d. ten to fifteen years
03. On ampere hour basis the efficiency of a lead acid battery is in the range
a. 90 to 95 percent
b. 80 to 85 percent
c. 70 to 75 percent
d. 60 to 65 percent
04. Which cell has the reversible chemical reaction?
a. Lead acid
b. Mercury oxide
c. Carbon zinc
d. Silver oxide
05. Container of a lead acid battery is made of
a. moulded hard nibber
b. Ceramics
c. Celluloid
d. any of the above
06. The plates of a lead acid battery are made of
a. rolled zinc copper alloy
b. Cast animonial lead alloy
c. perforated nickel cadnium alloy
d. pressed antimony bismuth alloy
07. The condition of a fully charged lead acid battery can be ascertained by
a. Voltage
b. Specific gravity of electrolyte
c. gassing
d. any of the above
08. During charging the electrolyte of a lead acid battery becomes
a. stronger
b. weaker
c. diluted with water
d. there is no change in electrolyte
09. The value of specific gravity of acid when a lead acid battery is fully charged is
a. 1.285
b. 2.185
c. 2.585
d. 2.9585
10. In a lead acid battery during charging
a. anode becomes whitish in colour
b. voltage drops
c. specific gravity of acid increases
d. the cell gives out energy
