Quiz # 5 Batteries

A primary cell may:

• a. be recharged using a primary cell charger.

• b. not be recharged.

• c. be recharged if it still has a partial charge.

• d. be used indefinitely without any charge.

The __________ is the most common type of primary-cell battery.

• a. dry cell

• b. lithium ion

• c. nickel cadmium

• d. alkaline

1.    Statement No. 1. Lead-acid batteries used in aircraft are similar to automobile batteries.

 

Statement No. 2. The lead-acid battery is made up of a series of identical cells each containing sets of positive and negative plates.

Regarding the above statements:

• a. Only #1 is true

• b. Only #2 is true

• c. Both #1 and #2 are true.

The voltage of lead acid cell is approximately ________ volts in order to attain the voltage required for the application.

• a. four

• b. two

• c. six

• d. eight

The state of charge of a lead-acid battery is checked using a __________ and is indicated by the density of the electrolyte.

• a. hydrometer

• b. volt meter

• c. viscometer

• d. ammeter

A battery with a capacity of 1 amp-hour should be able to continuously supply a current of ______ amp(s) to a load for exactly 1 hour.

• 2

• 1

• 4

Because of the internal resistance (IR) in the battery, the voltage of the external charging source must be __________ the open circuit voltage.

• greater than

• less than

• equal to

Statement 1. In the aircraft, the storage battery is charged by direct current from the aircraft  generator system. This method of charging is the constant voltage method, since the generator voltage is held constant by the use of a voltage regulator.

 

Statement 2. When a storage battery is being charged, it generates a certain amount of hydrogen and methane. The methane displaces oxygen, so the gases are considered to be non-combustible.

Regarding the statements about aircraft storage battery charging and gas generation, which of the following is true?

• Only #1 is true

• Only #2 is true

• Both #1 and #2 are true

Tags

NGSS.HS-PS1-4

When a charging current is applied to a nickel-cadmium battery, the negative plates lose oxygen and begin forming __________.

• hydrogenated lead oxide

• hydrogenated cadmium oxide

• metallic cadmium

Tags

NGSS.HS-PS1-2

A specific gravity reading between 1.300 and 1.275 of a lead-acid battery electrolyte indicates a:

• low state of charge.

• high state of charge.

• midrange state of charge.