Module 3.2 Revision

The most common type of wet cell uses lead plates and

• Sulfuric acid electrolyte

• Lead acid

• Water

• Lead acid and water

The most common type of wet cell uses lead plates and Sulfuric acid electrolyte is called

• a. Wet cell

• b. Dry cell

• c. Lead-acid cell

• d. Sulfuric acid electrolyte cell

The lead –acid cell constructed by

• a. Positive plate, negative plate and separator

• b. Positive plate, negative plate and acid

• c. Positive plate, negative plate and water

• d. Lead acid, water and separator

When the cells are fully charged ,the negative plate group is?

• a. Lead peroxide

• b. Pure spongy lead

• c. Has maximum acid content

• d. Both a & b

When the chemical action will stop?

• a. When acid contents is at minimum

• b. When water contents is at maximum

• c. When both plates are chemically alike

• d. All of the above

When the cell can’t produce any more electricity?

• a. When the cell is charged

• b. When the cell is discharge

• c. When both plates are coved with lead sulfate

• d. Both b and c

To obtain higher voltage cells must be connected in

• a. Parallel

• b. Series-parallel

• c. Series

• d. Parallel-series

What is the voltage output of a single lead-acid cell?

• a. 1v

• b. 2v

• c. 3v

• d. 4v

A car needed 12V to start the engine, run the lights, car radio and etc., How many cells made up a battery?

• a. 4 cells

• b. 5 cells

• c. 6 cells

• d. 7 cells

What is the most important use of batteries in big companies?

• a. Emergency light

• b. In the cars

• c. In UPS System

• d. Backup power