Oxygen System

Question 1

The Cockpit oxygen pressure gauge reads

A. Oxygen pressure at the crew masks

B. bottle pressure electrically

C. bottle pressure mechanically

D. requires DC power

Answer 1

C

Question 2

Passenger masks are dropped as follows

A. automatically with the PASS OXY selector in AUTO and cabin altitude exceeds 14500 feet

B. If the cabin exceeds 13500 feet regardless of PASS OXY selector

C. PASS OXY Selector ON regardless of altitude

D. A. and C

Answer 2

D

Question 3

If DC power fails placing the PASS OXY selector in

A. ON deploys the passenger mask regardless of DC power on or off

B. ON deploys the passenger mask only if 14500 feet cabin altitude is exceeded

C. OFF does not restrict oxygen to the crew only if the cabin altitude is above 14500 feet

D. None of the above

Answer 3

A

Question 4

The purpose of the altitude pressure switch is to

A. bypass oxygen flow directly to the passengers regardless of the PASS OXY selector position

B. open a solenoid at 14500 cabin altitude allowing oxygen flow to the passenger oxygen distribution system

C. close a solenoid valve at 14500 feet cabin altitude stopping oxygen flow to the passengers

D. Open a solenoid if the pass PASS OXY selector is a selector is AUTO and the cabin exceeds 10000’

Answer 4

B

Question 5

If normal DC power is lost with the PASS OXY selector in AUTO

A. the passenger mask will deploy immediately regardless of the cabin altitude

B. the passenger mask cannot be darropped manually

C. The oxygen pressure gauge on the copilot’s panel will be inoperative

D. automatic dropping of the passenger masks will not occur

Answer 5

D