ESV Study

Question 1

HYD

What is the purpose of the priority valve?

Answer 1

Ensures enough pressure is available to the actuators to operate the primary flight controls

Question 2

HYD

What is the purpose of the electric pump in the Yellow system?

Answer 2

Pressurize the brake accumulators

Operate the main, fwd and aft cargo doors

Question 3

HYD

What are the airspeed limits for the Ram Air Turbine (RAT)?

Answer 3

140kts to 320kts

Question 4

ELEC

What causes the IDG FAULT Amber light to illuminate?

Answer 4

High output oil temperature

Low oil pressure

Question 5

ELEC

LAND RECOVERY switch purpose

Answer 5

Restores power supply to spoilers 2,3,5,7, slats, flaps and anti-skid system after loss of DC NORM BUS

Question 6

ELEC

GEN HI (amber) light illuminates

Answer 6

The load of any generator is above 1.1 on the AC LOAD indicator. This may occur when only one generator is supplying the entire electrical system

Question 7

ELEC

What is the normal power supply for the AC Emergency Bus?

Answer 7

AC Bus 1 through the AC ESS bus

Question 8

ELEC

In general, what will cause the Standby Generator to start automatically?

Answer 8

STBY GEN switch to OVRD, in flight when neither engine generator nor the APU generator are supplying the main aircraft power.

Question 9

ELEC

What powers the Standby Generator?

Answer 9

Green hydraulic system pressure