Unit 3 Revision 1

When the chemical action will stop?

• acid contents is at minimum and water contents is at maximum

• acid contents is at maximum water contents is at minimum

• both acid and water contents is at maximum

• both acid and water contents is at minimum

What is the factor that determine a battery capacity ?

• Contact area between plate and electrolyte

• voltage

• number of cells

• plate material

When both plate are covered with lead sulfate the battery is _______

• Fully charged

• Fully Discharged

• Charged

• Discharged

What is preventing the battery from producing any more electricity?

• Fully charged

• When both plate are covered with lead sulfate

• Charged

• Acid content increases

What happen when the lead acid is discharging?

• Positive plate group become lead peroxide

• Negative plate become pure spongey lead

• Lead sulfate build-up on the plate

• The electrolyte acid content increases

What is the use of battery system?

• Portable DC supply is needed

• Emergency light

• In the cars

• In the factory

Which of the following is the one Application of batteries?

• Use for damage cells in a system

• Use for Backup power sources

• In converting Ac System

• Use for smoothing output Ac system

What is the use of battery system?

• For damage cells in a system

• Uninterruptible power supply system(UPS)

• For smoothing output Ac system

• In rectifier Ac System

What happen when the lead acid is discharging?

• Positive plate group become lead peroxide

• Negative plate become pure spongey lead

• Lead sulfate build-up on the plate

• The electrolyte acid content increases

What is the battery state of charge if the acid content at maximum?

• Battery is fully charged

• Battery is fully Discharged

• Battery is connected to a load

• Battery is Discharging