1. Which of the following is not an aircraft engine manufacturer?
a) BMW
b) General Electric
c) Pratt & Whitney
d) Rolls-Royce
Explanation: In commercial aviation, the major players in the manufacturing of turbofan engines are Pratt & Whitney, General Electric, Rolls-Royce, and CFM International.
2. How many types of gas turbine engines are manufactured?
a) 2
b) 4
c) 1
d) 10
Explanation: There are four types of gas turbine engines: the turbojet, the turbofan, the turboprop, and the turboshaft.
3. CFM56-3 is a turbofan engine.
a) true
b) false
Explanation: The CFM56 series is a family of high-bypass turbofan aircraft engines made by CFM International. CFM International is a French-American company headquartered in Cincinnati, Ohio, United States.
4. Rolls-Royce Trent 800 engine generates a maximum thrust of __________
a) 9,500lb
b) 95,000lb
c) 950lb
d) 9,50,000lb
Explanation: The Rolls-Royce Trent 800 engine generates a maximum thrust of 95,000lb. It was designed to be used on the Boeing 777 and was first produced in 1996
5. High-bypass turbofans are usually most efficient when the aircraft is traveling at __________
a) 500-550 mph
b) 50-55 mph
c) 20-25 mph
d) 200-250 mph
Explanation: High-bypass turbofans are usually most efficient when the aircraft is traveling at 500 to 550 miles per hour (800 to 885 km/h) i.e. the cruise speed of most large airliners
6. In general aviation, the dominant manufacturer of turboprop engines has been __________
a) Maserati
b) Pratt & Whitney
c) Boeing
d) Airbus
Explanation: In general aviation, the dominant manufacturer of turboprop engines has been Pratt & Whitney. However, General Electric in 2015 its entrance into the market.
7. Turboshaft engines are used primarily for __________
a) UAVs
b) Commercial aircrafts
c) Cars
d) Helicopters
Explanation: Turboshaft engines are used primarily for helicopter. A turboshaft engine is similar to a turboprop in principle, but in turboshaft the engine does not provide any physical support to the helicopter’s rotors.
8. What is the full form of TEL?
a) Tetraethyllead
b) Tetraethylenelead
c) Tetraethollead
d) Tetraethanelead
Explanation: Tetraethyllead (TEL) is blended with aviation gasoline, to be used as a fuel for aircrafts. The blend increases the fuel efficiency
9. What is the full form of ARINC?
a) Aeronautical Radio, Incorporated
b) Aircraft Radio, Incorporated
c) Aviation Radio, Incorporated
d) Air Radio, Incorporated
Explanation: ARINC refers to Aeronautical Radio, Incorporated. It is owned by Collins Aerospace and was founded in 1929. It provides transport communication systems for various industries like aviation, defense and healthcare.
10. Aircraft AC systems operate on which of the following frequency?
a) 4Hz
b) 40Hz
c) 400Hz
d) 4000Hz
Explanation: All aircraft equipment’s using AC power supply, operates at a frequency of 400Hz. Such relatively high frequency helps in reducing the core size of equipment’s used.