A. to allow gases out when the cell is on charge
B. to add water to the cell if needed
C. to check the level of electrolyte
D. to do all above functions
Related Mcqs:
- 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 - The capacity of a lead-acid cell depends on
A. rate of discharge
B. temperature
C. density of electrolyte
D. quantity of active materials
E. all above - The e.m.f. of an Edison cell, when fully charged, is nearly______________?
A. 1.4 V
B. 1 V
C. 0.9 V
D. 0.8 V - Internal resistance of a cell is reduced by__________?
A. using vent plug to permit gas formed during discharge
B. increasing the plate area
C. putting plates very close together
D. all above methods - 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 - Weston standard cell at 20°C has voltage of _______ volts
A. 0.8
B. 0.9
C. 1.0187
D. 1.5 - A typical output of a solar cell is_____________?
A. 0.1V
B. 0.26 V
C. 1.1 V
D. 2 V
