Battery: [ ISRO,DRDO,DMRC,SAIL, ODNANCE, HAL, WBSEDCL, RAILWAY & Others competitive]-mcq of battery
91.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 of the above
Ans. D
92. If the battery is wrongly connected on charge following will happen
A. Current delivered by the battery will be high
B. Current drawing will be Nil
C. Currently drawing will be very small
D. Currently drawing will be very high
Ans. D
93.Battery charging room is to be kept well ventilated so as to reduce the hydrogen concentration below……… percent
A. One
B. Two
C. Three
D. Four
Ans. C
94. Under normal charging rate, the charging current show to be
A. 10% of capacity
B. 20% of capacity
C. 30% of capacity
D. 40% of capacity
Ans. A
95.Trickle charge is required for
A.. Primary cells
B. Lead acid batteries
C. Nickel iron cells
D. All of the above
Ans. D
96.The output voltage of a charger is
A. Less than the battery voltage
B. Higher than the battery voltage
C. The same as the battery voltage
D. None of the above
Ans. B
97.It is noticed that during charging
A. There is a rise in voltage
B. Energy is absorbed by the cell
C. Specific gravity of H2 SO4 is increased
D. All of the above
Ans. D
98.Overcharging ……..
A. Produces excessive gassing
B. Loosens the active material
C. Increases the temperature resulting in buckling of plates
D. All of the above
Ans. D
99.Under charging …….
A. Reduces specific gravity of the electrolyte
B. Increases specific gravity of the electrolyte
C. Produces excessive gassing
D. Increases the temperature
Ans. A
100.In ……..system the charging current is intermittently controlled at either a maximum or minimum value
A. Two rate charge control
B. Trickle charge
C. Floating charge
D. An equalizing charge
Ans. A
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