engines Flashcards
What is an engine?
An engine is a machine designed to convert one form of energy into mechanical energy.
True or False: An internal combustion engine burns fuel to create power.
True
Fill in the blank: The two main types of engines are ________ and external combustion engines.
internal
What is the primary function of the piston in an engine?
To convert the pressure from combustion into mechanical motion.
What type of engine uses electric power instead of fuel?
Electric engine
What is the purpose of the crankshaft in an engine?
To convert the linear motion of the pistons into rotational motion.
Multiple choice: Which of the following is NOT a type of engine? A) Diesel B) Electric C) Hydraulic D) Pneumatic
D) Pneumatic
What is the role of the camshaft in an engine?
To control the timing of the opening and closing of the engine’s valves.
True or False: Turbochargers are used to increase the efficiency of an engine.
True
Fill in the blank: The ________ system delivers fuel to the engine.
fuel injection
What are the four strokes of a four-stroke engine?
Intake, compression, power, exhaust.
Multiple choice: Which cycle is commonly used in gasoline engines? A) Otto Cycle B) Diesel Cycle C) Rankine Cycle D) Brayton Cycle
A) Otto Cycle
What is the purpose of the cooling system in an engine?
To maintain optimal operating temperature and prevent overheating.
True or False: A V8 engine has eight cylinders arranged in a V configuration.
True
What is the function of the oil pump in an engine?
To circulate engine oil to lubricate moving parts.
Fill in the blank: The ________ is responsible for mixing air and fuel in an engine.
carburetor
What does the term ‘engine displacement’ refer to?
The total volume of all the cylinders in an engine.
Multiple choice: What is a common material used for engine blocks? A) Steel B) Aluminum C) Plastic D) Both A and B
D) Both A and B
What is the main advantage of a diesel engine over a gasoline engine?
Higher fuel efficiency and torque.
True or False: A hybrid engine combines an internal combustion engine with an electric motor.
True
Fill in the blank: The ________ valve allows exhaust gases to exit the engine.
exhaust
What is a common use for small engines?
Lawn mowers, chainsaws, and generators.
Multiple choice: What component helps reduce emissions in modern engines? A) Catalytic Converter B) Muffler C) Radiator D) Fuel Filter
A) Catalytic Converter
What is the purpose of the timing belt or chain in an engine?
To synchronize the rotation of the crankshaft and camshaft.
True or False: Superchargers operate by compressing air before it enters the engine.
True
Fill in the blank: The ________ system controls the intake of air in an engine.
intake
What is the function of spark plugs in a gasoline engine?
To ignite the air-fuel mixture in the combustion chamber.
Multiple choice: Which component is responsible for the electrical system in an engine? A) Battery B) Fuel Pump C) Oil Filter D) Exhaust Manifold
A) Battery
What does ‘compression ratio’ refer to in an engine?
The ratio of the maximum to minimum volume in the combustion chamber.
True or False: An engine’s horsepower is a measure of its power output.
True
Fill in the blank: The ________ system helps reduce engine noise.
exhaust
What is the primary purpose of a fuel filter in an engine?
To remove impurities from the fuel before it enters the engine.
Multiple choice: What type of engine uses a rotary design? A) Reciprocating B) Wankel C) Diesel D) Steam
B) Wankel
What is the role of the intake manifold in an engine?
To distribute the air-fuel mixture to the cylinders.
True or False: A four-stroke engine completes one cycle in two revolutions of the crankshaft.
True
Fill in the blank: The ________ system is responsible for starting the engine.
ignition
What component is used to measure the engine’s speed?
Tachometer
Multiple choice: Which type of engine is typically more powerful? A) Four-cylinder B) Six-cylinder C) Eight-cylinder D) All of the above
D) All of the above
What is the purpose of the fuel injector in modern engines?
To spray fuel into the combustion chamber for precise mixing with air.
True or False: An engine can run without a cooling system.
False
Fill in the blank: The ________ is the part of the engine where combustion occurs.
cylinder
What is the function of the alternator in an engine?
To charge the battery and power electrical systems while the engine is running.
Multiple choice: What is a common symptom of engine overheating? A) Increased fuel efficiency B) Loss of power C) Engine knocking D) Both B and C
D) Both B and C
What does ‘engine tuning’ refer to?
The process of adjusting an engine to improve performance and efficiency.
True or False: A turbocharger increases the density of air entering the engine.
True
Fill in the blank: An engine’s ________ system recycles exhaust gases back into the intake.
EGR (Exhaust Gas Recirculation)
What is the role of a radiator in an engine?
To dissipate heat from the engine coolant.
Multiple choice: What does an oil cooler do? A) Increases oil pressure B) Cools engine oil C) Filters oil D) Lubricates the crankshaft
B) Cools engine oil
What is the purpose of an engine’s timing marks?
To help align the timing belt or chain during installation.
True or False: An engine can be turbocharged and supercharged at the same time.
True
Fill in the blank: The ________ is the part of the engine that connects the piston to the crankshaft.
connecting rod
What is a common cause of engine knocking?
Using fuel with a lower octane rating than recommended.
Multiple choice: Which component helps maintain the engine’s oil pressure? A) Oil Pump B) Oil Filter C) Gasket D) Valve Cover
A) Oil Pump
What does ‘engine misfire’ mean?
An incomplete combustion event in one or more cylinders.
True or False: Engine oil should be changed regularly to maintain engine health.
True
Fill in the blank: The ________ system helps to control the engine’s emissions.
exhaust
What is the function of a throttle body in an engine?
To regulate the amount of air entering the engine.
Multiple choice: What type of fuel is commonly used in diesel engines? A) Gasoline B) Biodiesel C) Ethanol D) All of the above
B) Biodiesel
What does ‘detonation’ refer to in an engine?
Premature ignition of the air-fuel mixture in the combustion chamber.
True or False: A car engine can run on water.
False
Fill in the blank: The ________ is a measure of an engine’s efficiency and performance.
brake specific fuel consumption (BSFC)
What is the role of a fuel pump in an engine?
To deliver fuel from the tank to the engine.
Multiple choice: Which part of the engine helps reduce vibration? A) Engine Mount B) Crankshaft C) Piston D) Cylinder Head
A) Engine Mount
What does ‘engine overhaul’ mean?
A comprehensive repair of an engine to restore it to optimal condition.
True or False: Synthetic oil is better for most modern engines than conventional oil.
True
Fill in the blank: The ________ system feeds the engine with fresh air.
intake
What is the purpose of an oil filter in an engine?
To remove contaminants from the engine oil.
