Pneumatics and Vacuum Systems

What range do vacuum and low pressure systems operate in?

• 2 inches of mercury to 14.7 pounds per square inch

• 1 inches of mercury to 7.3 pounds per square inch

• 4 inches of mercury to 24.4 pounds per square inch

High pressure systems operate in which pressure range?

• 1000 to 3000 pounds per inch

• 3000 to 6000 pound per inch

• 6000 to 10000 pounds per inch

Medium pressure systems operate in what pressure range?

• 100-150 pounds per square inch

• 350-800 pounds per square inch

• 20-100 pounds per square inch

What type of vacuum pump has a one way passage through the pump and is captured by the oil separator and returned to the sump?

• Wet pump

• Dry pump

• Vane-type air pumps

What is used to provide low pressure air on aircraft fitted with reciprocating engines?

• Vane type air pump

• Regulator valve

• Vacuum system filter

What is used to maintain 4 inches of mercury between instruments and the vacuum pump in a vacuum system?

• Regulator valve

• Suction reducer

• Vane type air pump

What is used in a vacuum system where gyro instruments operate at different vacuum levels?

• Suction reducer

• Regulator valve

• Vane type air pump

What is a negative to a venturi vacuum system?

• Extremely inefficient and limit capacity to drive instruments

• Limit capacity to drive multiple instruments

• Can only provide one set pressure

In a ventrui vacuum system, how much suction drive one turn and bank indicator?

• 2 inHg

• 4 inHg

• 3 inHg

What type of venturi vacuum system has an axillary venturi and is capable of more suction for the same speed?

• Super venturi (8-inch)

• Ultra ventrui (8-inch)

• Mega venturi (8- inch)