Which of the following has lower sp. gravity V Water Concentrated H₂SO₄ Dilute H₂SO₄ All of the listed here TRUE ANSWER : ? YOUR ANSWER : ?
Excessive charging a battery tends to increase the internal resistance of the battery produce gassing to corrode the positive plates into lead peroxide thereby weakening them physically bring about all above changes TRUE ANSWER : ? YOUR ANSWER : ?
Capacity of dry cells is more when it is supplying current for continuous periods None of these more when it is supplying current for intermittent periods unaffected by the type of discharge TRUE ANSWER : ? YOUR ANSWER : ?
48 ampere-hour capacity would deliver a current of 8 amperes for 6 hours 48 amperes for 1 hour 24 amperes for 2 hours 6 amperes for 8 hours TRUE ANSWER : ? YOUR ANSWER : ?
In a lead-acid cell dilute sulfuric acid (electrolyte) approximately comprises the following two parts H2O, two parts H₂SO₄ one part H2O, three parts H₂SO₄ all H₂SO₄ three parts H2O, one part H₂SO₄ TRUE ANSWER : ? YOUR ANSWER : ?
In a lead-acid cell, lead is called as positive active material None of the listed here negative active material passive material TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following factors adversely affects the capacity of the leadacid battery ? Temperature of surroundings All of these Rate of discharge Specific gravity of electrolyte TRUE ANSWER : ? YOUR ANSWER : ?
Negative plate of an Edison cell is made of silver oxide copper iron lead TRUE ANSWER : ? YOUR ANSWER : ?
The active material of the positive plates of silver-zinc batteries is silver oxide lead oxide lead zinc powder TRUE ANSWER : ? YOUR ANSWER : ?
The ampere-hour efficiency of a leadacid cell is normally between 80 to 85% 90 to 95% 20 to 35% 70 to 75% TRUE ANSWER : ? YOUR ANSWER : ?