1. The earliest aircraft were constructed primarily of __________
a) Steel
b) Aluminum
c) Steel
d) Wood
Explanation: The earliest aircraft were constructed primarily of wood. Many newly certified aircraft are built from moulded composite materials, such as carbon fiber and titanium alloys.
2. Stabilizing tail is also known as __________
a) Rudder
b) Empennage
c) Aileron
d) Wingtip
Explanation: The stabilizing tail is also known as the empennage. It is a structure at the rear end of an aircraft that provides stability during flight, in a way similar to the feathers on an arrow.
3. Which of the following is not a retraction system for landing gear?
a) Hydraulic retraction system
b) Thermal retraction system
c) Manual retraction system
d) Electrical retraction system
Explanation: Aircraft retraction systems can be manually, electrically or hydraulically operated. However, there are no thermal retraction systems in aircrafts. The retraction systems are required to reduce drag.
4. An aircraft engine generates __________ power.
a) Electrical
b) Mechanical
c) Thermal
d) Hydraulic
Explanation: An aircraft engine is a component of the propulsion system for an aircraft that generates mechanical power. The power generated is used to keep the aircraft flying high in the air.
5. The General Electric GE90 is a family of high-bypass __________ aircraft engines.
a) Turboshaft
b) Turboprop
c) Turbojet
d) Turbofan
Explanation: The General Electric GE90 is a family of high-bypass turbofan aircraft engines. It is built for the Boeing 777 by GE aviation. The engine offers thrust ratings from 81,000 to 115,000 lb.
6. The Rolls-Royce Trent 900 is one of the power plant options for which of the following?
a) Airbus A380
b) Boeing 747
c) Airbus A320
d) Airbus A350
Explanation: The Rolls-Royce Trent 900 is a turbofan engine and is one of the power plant options available for the Airbus A380. Another power plant option for the A380 is the Engine Alliance GP7000
7. Which is the largest jet engine in the world?
a) GE90
b) Trent 800
c) PW4000
d) GE9X
Explanation: The GE9X is the largest jet engine in the world, it is as wide as the body of a Boeing 737. The engine is manufactured by General Electric for the Boeing 777X.
8. A turboprop is very efficient when operated at cruise speed of __________
a) 200-400 mph
b) 20-40 mph
c) 10-100 mph
d) 600-800 mph
Explanation: Turboprops are extremely efficient when operated at cruise speeds of 200 to 400 mph. This is the ideal cruise speed for such engines, thus providing such efficiency.
9. In jet engines the oxygen necessary for fuel combustion comes from the air.
a) true
b) false
Explanation: True, in jet engines the oxygen necessary for fuel combustion comes from the air. The jet engines take in required oxygen through the engine blades and the process of combustion takes place.
10. The last airliner that used turbojets was the __________
a) Boeing 737
b) Airbus A330
c) Concorde
d) Boeing 767
Explanation: Concorde was the last airliner that used turbojet. The Mach 2 airspeed offered by Concorde proved the engine to be highly efficient. Other aircrafts could not match such airspeeds.