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Flashcards in Hydraulics Deck (14)
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1
Q

How many Hydraulic Systems are there?

A

3

2
Q

How many pumps does each Hydraulic System have?

A

2

3
Q

What powers the Hydraulic Pumps in each system?

A

System 1 and 2 each have 1x engine driven pump, the backup pumps for system 1 and 2 along with the primary AND backup pump of system 3 are all AC powered.

4
Q

The hydraulic shut off valves are powered by the ___ .

A

DC Emergency Bus

5
Q

Hydraulic system 3 powers the nose gear steering system. True/False?

A

True

6
Q

The ACMPs are controlled by switches on the overhead hydraulic control panel. True/False?

A

True

7
Q

An electric fan drawing air from the Ram Air Inlet will help in cooling the fluid in hydraulic systems 1 and 2 when the aircraft is on the ground. True/False?

A

True

8
Q

What are the hydraulic accumulators charged with?

A

Nitrogen

9
Q

HYD EDP 1A Amber EICAS message indicates that the output of the #1 hydraulic pump is less than 1800 PSI. True/False?

A

True

10
Q

ACMP 1B is powered by AC BUS 2. True/False?

A

True

11
Q

The hydraulic fluid temperature on the Hydraulic Synoptic page is green when the hydraulic fluid temperature is less than ___ degrees C?

A

96 degrees C

12
Q

Normal hydraulic system pressure is ___ PSI.

A

3000 PSI

13
Q

EICAS HYD 2 LOW PRESS Amber Caution message means that hydraulic system 2 pressure is below ___ PSI.

A

1800 PSI

14
Q

Normal hydraulic quantity is ____ .

A

45-85%