Computer Programming MCQs

5739 MCQs  (Page 155 of 574)

Short circuiting of a cell may be caused____________?
A. buckling of plates
B. faulty separators
C. lead particles forming circuit between positive and negative plates
D. excessive accumulation of sediment
Mercury cell has which of the following characteristics ____________?
A. Flat discharge current-voltage curve
B. High power to weight ratio
C. Comparatively longer shelf life under adverse conditions of high temperature and humidity
D. All of the above
Extent of corrosion in the underground metal work depends upon___________?
A. Amount of mositure
B. Type of metals
C. Type of soil chemicals
D. All above factors
Charging a sulphated battery at high rate results in___________?
A. Boiling of electrolyte due to gassing
B. Warping of plates
C. Damage to separators, cell caps covers and battery case due to excessive temperature
D. All above
For a cell to work, which of the following condition(s) become necessary ___________?
A. Two electrodes of different meta’s should be inserted in the electrolyte, not touching each other
B. Electrolyte must chemically react with one of the electrodes
C. Electrolyte liquid or paste should be conducting
D. All above three conditions are necessary