Engines

What is the main purpose of an engine or motor?

• To convert energy into mechanical energy

• To convert energy into electrical energy

• To convert energy into heat energy

• To convert energy into potential energy

What is the most common example of a mechanical heat engine?

• Electric motor

• Pneumatic motor

• Internal combustion engine

• Clockwork motor

What is the term used to describe devices that burn or consume fuel to perform mechanical work?

• Converter

• Generator

• Engine

• Motor

What is the main difference between a motor and an engine?

• Motor uses electricity, engine uses fuel

• Motor creates power from pressure, engine receives power from an external source

• Motor changes the chemical composition of its energy source, engine does not

• Motor imparts motion, engine does not

What was the first type of steam engine to make use of steam at a pressure just above atmospheric?

• Newcomen steam engine

• Watt steam engine

• Boulton & Watt engine

• Turboshafts

What is the main source of power for medieval Muslim engineers?

• Steam power

• Water power

• Wind power

• Electricity

What is the main purpose of a reaction engine such as a jet engine?

• To convert heat into work

• To produce thrust by expelling reaction mass

• To convert electrical energy into mechanical motion

• To use compressed air to generate power

What is the main byproduct emitted by chemically fueled heat engines?

• Oxygen

• Water vapor

• Nitrogen oxide

• Carbon monoxide

What is the main difference between an airbreathing engine and a rocket engine?

• Airbreathing engine uses air as part of the fuel reaction, rocket engine does not

• Airbreathing engine does not emit exhaust gases, rocket engine does

• Airbreathing engine does not require an oxidizer, rocket engine does

• Airbreathing engine does not produce thrust, rocket engine does

What is the main purpose of a prime mover in the context of an engine?

• To transform the flow or changes in pressure of a fluid into mechanical energy

• To use compressed air to generate power

• To convert heat into work

• To convert electrical energy into mechanical motion