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How much do you know about car engines?
by J. Reinoehl
Engines come in way more varieties than just the type under the hood of your car. What do you know about different engines and how they work? See what you know by taking the quiz!

What kind of fuel would power a two-stroke engine?

  • A mix of water and alcohol.
  • A mix of oil and gasoline.
  • Avtur.
  • Diesel fuel.

Which of the following two-stroke engines is water-cooled instead of air-cooled?

  • A weed eater.
  • An outboard motor.
  • High-octane gasoline.
  • Diesel fuel.

What is “firing order?"

  • It is the order in which the furnaces in a coal power plant are started after maintenance.
  • It is a complex formula that enables you to determine whether or not a car engine will misfire.
  • It is the order in which a spark plug ignites each cylinder in an engine block.
  • It is the order the wheels on a train start moving.

Which of the following is not an electric motor?

  • The engine on a miter saw.
  • The engine on a kitchen blender.
  • The engine on a steam engine.
  • The engine on a computer disk drive.

Which engine uses fuel and an oxidizer to make up the propellant?

  • A jet engine.
  • A marine engine.
  • A rocket engine.
  • A two-stroke engine.

Another name for a gas turbine engine is?

  • A windmill.
  • A jet engine.
  • An oil jack.
  • A generator.

A two-stroke engine would not work for which of the following?

  • To power a small car.
  • To power a dirt bike.
  • To power a chainsaw.
  • To power a lawnmower.

An internal combustion engine would be good for what?

  • Powering a train with steam.
  • Powering a submarine with heated air.
  • Creating electricity in a coal power plant.
  • Using Diesel to power a car.

What is the purpose of afterburners on jet engines?

  • To reduce pollution.
  • To increase thrust.
  • To decrease drag.
  • To increase lift.

What happens during the power phase of the four-stroke internal combustion engine cycle?

  • The compressed gas is ignited, pushing the piston downward.
  • The piston moves upward and pushes the gas into the exhaust system.
  • The piston moves upward and compacts the gas.
  • The piston moves downward and pushes the gas into the exhaust system.

What is the primary disadvantage of a two-stroke internal combustion engine?

  • They create more pollution.
  • They are extremely complex.
  • They are thermally inefficient.
  • They are much heavier than four-stroke engines.

A fan, compressors, combustion chamber, turbine, and nozzle are parts of which engine?

  • A radial engine.
  • A rotary engine.
  • A chemical rocket engine.
  • A turbojet.

One type of piston-less internal combustion engine is called what?

  • Rankine.
  • Diesel.
  • Wankel.
  • Radial.

What is one definition of an engine?

  • A machine that changes mechanical energy into chemical energy.
  • A machine that uses fuel.
  • A machine that changes heat energy into mechanical motion.
  • A machine that turns a crankshaft.

Hybrid cars use gas engines for what?

  • To recharge the batteries.
  • To power low, continuous speeds.
  • To aid in fast acceleration.
  • A and C.

An external combustion engine would be best used for powering what?

  • A train steam engine.
  • A hybrid car.
  • A jet airplane.
  • A modern farm tractor.

What is one thing an external combustion engine might use to move the piston?

  • Steam.
  • Fire or explosions.
  • Electricity.
  • Turbines.

A rotary engine would be best used in which vehicle?

  • A steamroller.
  • An airplane,
  • A paddle boat.
  • A passenger van.

Generally, engines that run only on electricity are called what?

  • Electro-magnets.
  • Hybrids.
  • Motors.
  • Pumps.

What was the name of the first passenger car that used an external combustion engine?

  • The Oruktor Amphibolos.
  • The Model A.
  • The Steam Velocipede.
  • The Puffing Devil.

Which of the following is not a current hybrid engine combination?

  • Turbo-electric.
  • Biomass-electric.
  • Petroleum-electric.
  • Diesel-electric.

What was the Naptha engine developed to power?

  • Trains.
  • Bicycles.
  • Commercial airplanes.
  • Personal watercraft.

Which of the following is not an internal combustion engine type?

  • Diesel.
  • Radial.
  • Stirling.
  • Rocket.

Which of the following are types of two-stroke engines?

  • Reciprocating, uniflow, turbine, and oscillating.
  • Reed inlet, rotary inlet, piston-controlled inlet, and uniflow-scavenged.
  • I, V, W, and U.
  • Griffin, Dyer, Velozeta, and Beare head.

Who is credited with inventing the first steam-powered submarine?

  • Richard Trevithick.
  • Robert Fulton.
  • Caleb Willow.
  • Thomas Newcomen.

Robert Sterling invented what kind of external combustion engine?

  • The Sterling engine.
  • The Naptha engine.
  • The Organic Rankine engine.
  • The high-pressure steam engine.

Which internal combustion engine is also called a "star" engine?

  • A jet engine.
  • A six-stroke engine.
  • A radial engine.
  • A Wankel engine.

What is the purpose of a nozzle on a rocket engine?

  • To prevent the exhaust from escaping with the propellant.
  • To direct the propellant into the combustion chamber.
  • To direct the park into the combustion chamber.
  • To accelerate the gas exhaust.

Which of the following is not a major type of electric motor?

  • Magnetic.
  • Piezoelectric.
  • HAWT.
  • Electrostatic.

What was the Stanley Steamer?

  • An automobile.
  • A train.
  • A vacuum.
  • A boat.

What shape is the rotor on a Wankel engine?

  • It is cylindrical.
  • It is a perfect sphere.
  • It is similar to a Reuleaux triangle.
  • It is an ellipsoid.

What is the difference between the Rankine cycle and the Otto cycle?

  • The Rankine cycle is used to describe a spark engine, and the Otto cycle is used to describe a fluid that changes phases.
  • The Rankine cycle is the ideal for external combustion engines, and the Otto cycle is the ideal for spark-ignition engines.
  • The Rankine cycle is used to describe low mass fluids, and the Otto cycle is used to describe high mass fluids.
  • The Rankine cycle is the ideal for spark-ignition engines, and the Otto cycle is the ideal for gas-turbine engines.

Rotary and radial engines are both used in older propeller airplanes, but what is the difference between the two?

  • Radial engines have a rotating crankshaft; the crankshaft of rotary engines is fixed.
  • Radial engines do not overheat as easily as rotary engines.
  • Radial engines were only useful until the 1920s, when drag limited power output.
  • The radial engine has the pistons facing the central point; they point outward on a rotary engine.

Which one is not an internal combustion engine?

  • Solid rocket.
  • Cold gas thruster.
  • Turborocket.
  • Hybrid rocket.

What is a disadvantage of a Wankel engine?

  • It is heavier than a piston engine.
  • It is more expensive to mass produce.
  • Poor fuel economy.
  • It is three times as large as a piston engine with an equal output.