AFOQT Practice Test

What type of engine is typically used in aircraft with cruising speeds not exceeding 250 mph?

1. Gas turbine engine

2. Reciprocating engine

3. Turbojet engine

4. Variable pitch propeller engine

The correct answer is: Reciprocating engine

The correct answer is the reciprocating engine, which is commonly found in smaller, general aviation aircraft. Reciprocating engines, often referred to as piston engines, operate on the principle of internal combustion and are well-suited for slower aircraft with cruising speeds typically below 250 mph. This type of engine is efficient for the specific speed and altitude ranges of general aviation. It provides excellent fuel economy and reliability, making it a preferred choice for flight training, small personal aircraft, and light utility planes. The design allows for relatively simple maintenance and operation, contributing to its widespread use in light aviation. In contrast, gas turbine engines are more powerful and are used in larger aircraft capable of higher speeds. Turbojet engines are specifically designed for high-speed jet propulsion and are not efficient for lower speeds. A variable pitch propeller engine refers to a system used to optimize efficiency at varying speeds but does not define the type of engine itself, which makes it less appropriate in this context. Thus, the reciprocating engine is the best fit for aircraft with lower cruising speeds.