The watt-hour efficiency of a lead-acid cell varies between 70 to 80% 40 to 60% 25 to 35% 90 to 95% TRUE ANSWER : ? YOUR ANSWER : ?
Ampere hour capacity of an industrial battery is based on ____ hours discharge rate. 8 12 24 10 TRUE ANSWER : ? YOUR ANSWER : ?
The ratio of ampere-hour efficiency to watt-hour efficiency of a lead-acid cell is always greater than one just one none of the listed here always less than one TRUE ANSWER : ? YOUR ANSWER : ?
The capacity of a battery is expressed in terms of ampere-hour rating voltage rating none of the listed here current rating TRUE ANSWER : ? YOUR ANSWER : ?
Hydrogen evolved during charging produces explosive mixture when it is more than 6 % 8 % 10 % 5 % TRUE ANSWER : ? YOUR ANSWER : ?
When the specific gravity of the electrolyte of a lead-acid cell is reduced to 1.1 to 1.15 the cell is in discharged state none of the listed here charged state active state TRUE ANSWER : ? YOUR ANSWER : ?
During the charging of a lead-acid cell its voltage increases its cathode becomes dark chocolate brown in colour it gives out energy specific gravity of H₂SO₄ decreases TRUE ANSWER : ? YOUR ANSWER : ?
A constant-voltage generator has minimum current capacity minimum efficiency low internal resistance high internal resistance TRUE ANSWER : ? YOUR ANSWER : ?
The output voltage of a charger is none of the listed here the same as the battery voltage higher than the battery voltage less than the battery voltage TRUE ANSWER : ? YOUR ANSWER : ?