A. buckling of plates
B. faulty separators
C. lead particles forming circuit between positive and negative plates
D. excessive accumulation of sediment
E. any one of above
Related Mcqs:
- Cell short circuit results in_________?
A. low sp. gravity electrolyte
B. abnormal high temperature
C. reduced gassing on charge
D. all above - As compared to a lead-acid cell, the efficiency of a nickel-iron cell is less due to its__________?
A. compactness
B. lower e.m.f.
C. small quantity of electrolyte used
D. higher internal resistance - The internal resistance of an alkali cell is nearly _________ times that of the lead-acid cell
A. two
B. three
C. four
D. five - When the specific gravity of the electrolyte of a lead-acid cell is reduced to 1.1 to 1.15 the cell is in___________?
A. charged state
B. discharged state
C. both (A) and (B)
D. active state - Self charge of a Ni-Fe cell is _______ Edison cell
A. equal to
B. less than
C. more than
D. much more than - Internal short circuits are caused by___________?
A. breakdown of one or more separators
B. excess accumulation of sediment at the bottom of the cell
C. both (A) and (B)
D. none of the above - The capacity of a lead-acid cell does not depend on its___________?
A. temperature
B. rate of charge
C. rate of discharge
D. quantity of active material - The ampere-hour efficiency of a lead acid cell is normally between_________?
A. 20 to 30%
B. 40 to 50%
C. 60 to 70%
D. 90 to 95% - Specific gravity of electrolyte in Edison cell is_____________?
A. 0.8
B. 0.95
C. 1.1
D. 1.21 - Which of the following cell has a. reversible chemical reaction ___________?
A. Lead-acid
B. Mercury oxide
C. Carbon-zinc
D. Silver-oxide
