Chapter 5.5 - Exam Review

Question 1

What is the normal power source for the Aircraft’s electrical system?

Answer 1

Alternator.

Question 2

What is the emergency power source for the Aircraft’s electrical system?

Answer 2

Battery.

Question 3

What component of the Aircraft’s electrical system distributes electrical power from the Alternator to the circuits?

Answer 3

A Bus Bar.

Question 4

By what means is the Aircraft’s Battery re-charged?

Answer 4

By the Alternator.

Question 5

An internal fault in the Battery can be indicated by a prolonged higher than normal charge rate on a (Centre Zero Ammeter/Voltage Regulator)?

Answer 5

Centre Zero Ammeter.

Question 6

What is the likely consequence of a prolonged high charge rate on a Battery?

Answer 6

Overheat in the Battery.

Question 7

Current flow into and out of a Battery is measured by a (Left Zero/Centre Zero) Ammeter?

Answer 7

Centre Zero Ammeter.

Question 8

The electrical load on an Alternator is measured by a (Left Zero/Centre Zero) Ammeter?

Answer 8

Left Zero Ammeter.

Question 9

What is another name for a Left Zero Ammeter?

Answer 9

Loadmeter.

Question 10

An under-voltage situation indicated on a Voltmeter means the battery will (Over-Heat/Becomes ‘flat’)?

Answer 10

Become Flat.

Question 11

An over-voltage situation indicated on a Voltmeter means the battery will (Over-Heat/Becomes ‘flat’)?

Answer 11

Over-Heat.

Question 12

A Centre-Zero Ammeter indicates (Battery Current Flow/Alternator Load)?

Answer 12

Battery Current Flow.

Question 13

A Centre-Zero Ammeter will show a (negative/positive) charge after starting to confirm that the Alternator is on line and charging the Battery?

Answer 13

Positive.

Question 14

Alternator Failure in flight is indicated by a (Continuous Battery Discharge/Zero Reading) on a Left Zero Ammeter?

Answer 14

Zero Reading.

Question 15

Alternator Failure in flight is indicated by a (Continuous Battery Discharge/Zero Reading) on a Centre Zero Ammeter?

Answer 15

Continuous Battery Discharge.

Question 16

What two components protect electrical circuits from current overload?

Answer 16

• Fuses.

- Circuit Breakers.

Question 17

How can a Pilot normally build up braking pressure if the brakes feel spongy during the landing run?

Answer 17

By pumping the pedals.

Question 18

Vacuum Pump Failure can be indicated by a (high/zero) reading on the suction gauge?

Answer 18

Zero.

Question 19

If a zero reading shows on the suction gauge, how can you tell if it indicates a faulty gauge rather than Vacuum Pump Failure?

Answer 19

By checking the air-driven instruments.

Question 20

Will the air-driven flight instruments give reliable readings when a constant low pressure is indicated on the suction gauge?

Answer 20

No.

Question 21

Even though suction pressure is set correctly, it can read lower at low Engine RPM (such as on approach). Why is this so?

Answer 21

Because the Engine-driven pump will be turning slower at this speed than normal pressure/operations.

Question 22

In the Pitot-static system, total pressure is sensed by the (Static Vent/Pitot Tube)?

Answer 22

Pitot Tube.

Question 23

In the Pitot-static system, static pressure is sensed by the (Static Vent/Pitot Tube)?

Answer 23

Static Vent.

Question 24

An Aircraft’s (pressure/gyroscopic) flight instruments utilise the pitot-static system for their operation?

Answer 24

Pressure.

Question 25

Why shouldn’t pitot heat be used during ground operations?

Answer 25

Because it will overheat the Pitot Tube without the cooling airflow once airborne.