Module 11

Question 1

A fully charged Lead Acid battery will not freeze unless extremely low temperatures are reached because

Answer 1

Most acid is in the solution.

Question 2

a 12 cell Lead acid battery (2.1V per cell) in a series circuit provides 10 amps with a 2 ohm load. The internal resistance is?

Answer 2

.52 ohms

Question 3

Open space below plates is built into lead acid battery cells to?

Answer 3

Prevent sediment buildup from causing short circuits

Question 4

A true statement about the hydrometer reading of lead-acid battery electrolyte is?

Answer 4

No temperature adjustment is required if electrolyte is 80F

Question 5

What determines the amount of current which will flow through a battery while it is being charged by a constant voltage source?

Answer 5

The state of charge of the battery

Question 6

Which principals are generally true regarding the charging of several aircraft batteries?

Answer 6

Both A&B

Question 7

How should spilled electrolyte in battery compartments be handled?

Answer 7

Apply sodium bicarbonate & rinse with water

Question 8

The and of charge voltage of an 19 cell NiCad, while still on charge

Answer 8

depends on the temperature, and charging method being used.

Question 9

Electrolyte of Nicad batteries is lowest when?

Answer 9

In a discharged state

Question 10

Electrolyte of Nicad batteries is highest when battery is?

Answer 10

In a fully charged state

Question 11

What may result if water is added to a less than fully charged nicad battery

Answer 11

Excessive spewing when going through the charging cycle.

Question 12

How can the state of charge of a Nicad battery be determined?

Answer 12

By measuring discharge

Question 13

While being charged Nicad cells emit gas when/why?

Answer 13

Towards the end of the charge cycle

Question 14

Improper (Inadequate torque of cell link connectors may cause?

Answer 14

heat burns/marks on hardware

Question 15

The fastest method for charging Nicad batteries utilized?

Answer 15

Constant voltage and variable current

Question 16

A rise in temperature in NiCad batteries will:

Answer 16

cause decrease in internal resistance.

Question 17

What is the most likely to cause thermal runaway in a NiCad battery?

Answer 17

Excessive current draw

Question 18

Electrolyte may spew from cells as fully charged state is reached, Leaving white powdery deposits of potassium carbonate around cell vents when dry. This is considered

Answer 18

Normal operation

Question 19

A NiCad battery stored for a long period will show a reduction in electrolyte level due to?

Answer 19

Electrolyte being absorbed into the plates

Question 20

Servicing and charging Lead acid & NiCad batteries in the same area will likely result in?

Answer 20

Contamination.