Related Questions

In constant voltage charging method, the charging current from discharged to fully charged condition
A decreases
B increases
C remains constant
D none of the above
Under normal charging rate, the charging current should be
A 10% of capacity
B 20% of capacity
C 30% of capacity
D 40% of capacity
The internal resistance of an alkali cell is nearly _____ times that of the lead-acid cell.
A two
B three
C four
D five
As compared to constant-current system, the constant-voltage system of charging a lead acid cell has the advantage of
A reducing time of charging
B increasing cell capacity
C both (A) and (B)
D avoiding excessive gassing
Three maths classes: X, Y, and Z take an algebra test. The average score of class X is 83. The average score of class Y is 76. The average score of class Z is 85. The average score of class X and Y is 79 and the average score of class Y and Z is 81. What is the average score of the combined classes X, Y, and Z?
A 81
B 81.5
C 82
D 84.5
Three math classes , X, Y , and Z, take an algebra test. The average score in class X is 83. The average score in class Y is 76. The average score in class Z is 85. The average score of all students in classes X and Y together is 79. The average score of all student classes Y and Z together is 81. What is the average for all the three classes?
A 81
B 81.5
C 82
D 84.5
During the charging of a lead-acid cell
A Its voltage increases
B It gives out energy
C Its cathode becomes dark chocolate brown in colour
D Specific gravity of H2SO4 decreases
During the charging and discharging of a nickel-iron cell
A corrosive fumes are produced
B water is neither formed nor absorbed
C nickel hydroxide remains unsplit
D its e.m.f. remains constant
Those substances of the cell which take active part in chemical combination and hence produce electricity during charging or discharging are known as______materials.
A passive
B active
C redundant
D inert
In constant-current charging method, the supply voltage from discharged to fully charged condition
A decreases
B increases
C remains constant
D none of the above

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