Advanced Internal Combustion Engines MCQs
Advanced Internal Combustion Engines MCQs
Answer these 100+ Advanced Internal Combustion Engines MCQs and see how sharp is your knowledge of Advanced Internal Combustion Engines.
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1: What is the full form of "Ie"?
A. Ideal Engine
B. Intense Combustion
C. International Enterprise
D. Internal Combustion
2: What is meant by Internal Combustion?
A. The burning of fuel outside an engine
B. The burning of fuel inside an engine
C. The burning of fuel in the air
D. The burning of fuel under water
3: What is a Spark Ignition engine?
A. An engine in which the combustion process in each cycle is started by use of a flywheel.
B. An engine in which the combustion process in each cycle is started by use of a spark plug.
C. An engine in which the combustion process in each cycle is started by use of a piston.
D. An engine in which the combustion process in each cycle is started by use of a crankshaft.
4: What is the other name for Compression Ignition?
A. 4-stroke
B. CI
C. DOHC
D. Two-stroke
5: What does the acronym TDC stand for in engine terminology?
A. Top-Dead-Center
B. Top-Down-Center
C. Too- Dull- to- Care
D. The- Darn- Cat
6: What is the position called when an occurrence happens before TDC?
A. TDC
B. Head-End-Dead-Center
C. BTDC
D. B Te
7: What is BDC position of the piston?
A. The point where the piston is at the top of the engine
B. The point farthest from the crankshaft
C. The point where the piston is at the bottom of the engine
D. The point closest to the crankshaft
8: What is Indirect Injection?
A. Fuel injection into the primary chamber of an engine with a divided combustion chamber
B. Fuel injection into the quaternary chamber of an engine with a divided combustion chamber
C. Fuel injection into the secondary chamber of an engine with a divided combustion chamber
D. Fuel injection into the tertiary chamber of an engine with a divided combustion chamber
9: What is the bore diameter?
A. The distance from one point to another on the surface of a sphere
B. The longest dimension of an object
C. The distance between the centers of the two opposite sides of a circular object
D. The cylinder or diameter of the piston face, which is the same minus a very small clearance
10: What is the full form of TDC?
A. Top Driving Capacity
B. Training for Distance Course
C. Total Distance Covered
D. Top Dead Centre
11: What is the definition of "stroke?"
A. BDC to TDC
B. TDC to BDC
C. Distance between two consecutive piston movements.
D. Movement distance of the piston from one extreme position to the other: TDC to BDC or BDC to TDC.
12: What is the minimum volume in the combustion chamber with the piston at TDC?
A. Swept volume
B. Clearance volume
C. Combustion chamber volume
D. Engine displacement
13: What is the formula for displacement?
A. Displacement = Force x Distance
B. Displacement = Mass x Acceleration
C. Displacement = Volume displaced by the piston as it travels through one stroke
D. Displacement = Velocity x Time
14: What does a smart engine do?
A. Make the car go slower
B. Use less fuel
C. Make the car go faster
D. Regulate operating characteristics such as air-fuel ratio, ignition timing, valve timing, exhaust control, intake tuning, etc.
15: What is the Air-Fuel Ratio (AF)?
A. The temperature at which fuel burns in an engine
B. The ratio of mass of air to mass of fuel input into engine.
C. The amount of power an engine produces from a given amount of fuel
D. The amount of fuel needed to produce a given amount of power
16: What is the ratio of mass of fuel to mass of air input into an engine called?
A. Air-Fuel Ratio (AF)
B. Fuel-Air Ratio (FA)
C. Force-Air Ratio (FA)
D. Fuel-Force Ratio (FF)
17: What is the Brake Maximum Torque (BMT)?
A. Speed at which maximum torque occurs.
B. The amount of torque that can be applied to a brake before it fails.
C. The speed of a vehicle when the brakes are applied.
D. The amount of torque required to stop a vehicle.
18: What is an overhead valve?
A. A device that regulates the amount of fuel
B. A cover for the engine
C. A valve mounted in the engine head
D. A gear in the transmission
19: Where is the overhead camshaft mounted?
A. In the engine block
B. In the crankshaft
C. In the engine head
D. On the intake manifold
20: What is Fuel Injected (FI)?
A. A system for metering fuel into an internal combustion engine
B. A device for measuring the quantity of fuel in a storage tank
C. A unit of measurement for fuel consumption
D. A regulatory agency that sets standards for fuel injection systems
21: What is the Block Body of an engine made of?
A. Titanium
B. Cast Iron or Aluminum
C. Magnesium
D. Carbon Fiber
22: What is the purpose of the Camshaft?
A. To cool the engine
B. To hold the engine together
C. To create energy
D. To push open valves at the proper time in the engine cycle
23: What is the Venturi flow device?
A. A device which meters the proper amount of air into the fuel flow by means of a pressure differential
B. A device which measures the amount of air flow by means of a pressure differential
C. A device which meters the proper amount of fuel into the air flow by means of a pressure increase
D. A device which meters the proper amount of fuel into the air flow by means of a pressure differential
24: What is a catalytic converter?
A. A device that measures the amount of exhaust emissions
B. A device that increases the efficiency of the engine
C. Chamber mounted in exhaust flow containing catalytic material that promotes reduction of emissions by chemical reaction.
D. A device that controls the amount of fuel and air mixture in the engine
25: The size of the combustion chamber _______?
A. Remains the same
B. Continuously changes
C. Decreases
D. Increases
26: The size of the combustion chamber changes with what?
A. The amount of fuel
B. The amount of oxygen
C. The temperature
D. The position of the piston
27: What is a connecting rod bearing?
A. Part of the crankshaft
B. Bearing where connecting rod fastens to crankshaft.
C. The area where the connecting rod and piston connect.
D. Bearing in the connecting rod
28: What are cooling fins?
A. Cylinders and head without fins.
B. The inside surfaces of cylinders and head of an aircooled engine.
C. Metal fins on the outside surfaces of cylinders and head of an aircooled engine.
D. It is a type of coolant.
29: What is the crankshaft?
A. The rotating crankshaft itself.
B. The part of the engine block that makes up the crankcase housing
C. Part of the engine block that surrounds the rotating crankshaft.
D. The oil pan
30: What are the circular cylinders in the engine block?
A. Cylinders
B. Pistons
C. Crankshafts
D. Camshafts
31: What is an exhaust manifold?
A. A device used to measure engine performance
B. A piping system which carries exhaust gases away from the engine cylinders
C. The fuel used to power the engine
D. The person who operates the engine
32: What is the exhaust system?
A. Flow system for removing exhaust gases from the cylinders, treating them, and exhausting them to the surroundings.
B. System that helps to cool the engine
C. System that produces exhaust gases
D. System that helps the engine to function properly
33: What does an engine-driven fan do?
A. Removes waste heat from the engine
B. Adds air to the engine
C. Increases air flow through the radiator and engine compartment
D. Decreases air flow through the radiator and engine compartment
34: What is the purpose of a flywheel?
A. To smooth out engine operation.
B. Stores energy and furnishes a large angular momentum to keep the engine rotating between power strokes.
C. To increase the speed of the engine.
D. To keep the engine cool
35: What does a fuel injector do?
A. Sprays fuel into the incoming air on SI engines or into the cylinder on CI engines
B. Regulates the amount of fuel that enters the engine
C. Ignites the fuel-air mixture in the engine
D. Stores fuel for the engine
36: Many modern automobiles have a fuel pump that is _____?
A. Windmill
B. Solar powered
C. Electric
D. Manual
37: How is a fuel pump powered?
A. Gasoline
B. Electrically or mechanically
C. LPG
D. Wood
38: What is a glow plug?
A. An ignition system
B. A type of gasoline
C. A small electrical resistance heater used to preheat the combustion chamber of a CI engine
D. A part of the engine used to start the engine
39: What does the head of a cylinder usually contain?
A. Part of the clearance volume of the combustion chamber
B. The spark plug
C. The piston
D. The crankshaft
40: Which of the following is true about a head?
A. It creates the spark for combustion
B. It closes the end of the cylinder
C. It contains the fuel for combustion
D. It regulates the exhaust
41: What does a head gasket do?
A. A device that regulates the timing of the engine
B. Gasket which serves as a sealant between the engine block and head where they bolt together
C. Stopping oil from entering the combustion chamber
D. A measure of the ability of an engine to resist 'knocking' or 'pinging' during combustion
42: How many main bearings would be equal to the number of pistons?
A. One piston
B. One between each set of pistons plus the two ends
C. Three pistons
D. Two pistons
43: What is the function of an oil pan?
A. To clean the engine
B. To hold oil for the engine
C. To lubricate the engine
D. To cool the engine
44: How is an oil pump most commonly driven?
A. Electrically
B. Magically
C. Splash distribution
D. Mechanically by the engine
45: What is the oil sump?
A. Part of the engine that cools the oil
B. Part of the engine that lubricates the pistons
C. A type of motor oil
D. Reservoir for the oil system of the engine, commonly part of the crankcase.
46: What is the Piston?
A. The pressure forces in the combustion chamber
B. The cylindrical-shaped mass that doesn't reciprocate back and forth in the cylinder
C. The rotating crankshaft
D. The cylindrical-shaped mass that reciprocates back and forth in the cylinder
47: What is the function of piston rings?
A. To seal the combustion chamber
B. To cool the piston
C. To form a sliding surface against the cylinder walls
D. To lubricate the piston
48: What is a push rod?
A. Mechanical linkage between the camshaft and valves
B. Crankshaft in the engine
C. A device that helps open the valves
D. A element of the valvetrain
49: What is the purpose of a spark plug?
A. To initiate combustion in an SI engine
B. To make a car go smoother
C. To make a car go faster
D. To make a car go quieter
50: What is the full name for speed control-cruise control?
A. Automatic electronic control system
B. Automatic mechanical control system
C. Cruise control
D. Automatic electric-mechanical control system
51: Which of the following is NOT a method used to start an IC engine?
A. Electric motor
B. Electric battery
C. Flywheel
D. Starter
52: What is the unit of measurement for absolute pressure?
A. MmHg
B. Bar
C. Atm
D. Psi
53: What is perfect vacuum pressure?
A. -14.696 psi
B. Absolute zero pressure
C. 29.92 inHg
D. 0 psi
54: What is the temperature above absolute zero?
A. Negative temperature
B. Absolute temperature
C. Zero temperature
D. Positive temperature
55: What does it mean to accelerate?
A. To change the direction of movement
B. To increase the speed of movement
C. To decrease the speed of movement
D. To stop the movement
56: What is the rate at which the speed of an object increases called?
A. Velocity
B. Mileage
C. Deceleration
D. Acceleration
57: What is the meaning of the word "Adiabatic"?
A. Greek word
B. Cylinder walls
C. No pass through
D. Loss or gain of heat
58: What is the meaning of "advance"?
A. The distance beside of top or bottom
B. The distance inside of top or bottom
C. The distance behind of top or bottom
D. The distance ahead of top or bottom
59: From which part of the engine does air flow back into the cylinder?
A. Air cell
B. Connecting rod
C. Piston
D. Crankshaft
60: What does an air filter do?
A. Remove particles of dust from the engine
B. Add particles of dust to the engine
C. Circulated the engine
D. Prevent particles of dust from entering the engine.
61: What is a general term describing all methods of injecting fuel without the use of compressed air?
A. Compressed air
B. Airless injection
C. Fuel injection
D. Carburetion
62: At what temperature does the mixture of aniline and oil become turbid or cloudy?
A. 5 degrees Celsius
B. 20 degrees Celsius
C. The aniline number
D. 10 degrees Celsius
63: What is another name for a precombustion chamber?
A. Antechamber
B. Coal mine
C. Outer space
D. Greenhouse
64: What does API stand for?
A. Association for Public Information
B. Association for Private Investigators
C. American Petroleum Institute
D. American Political Institute
65: What is API gravity?
A. The number of miles until a car needs an oil change
B. An American Petroleum Institute designation for diesel fuels
C. A way to measure the fuel efficiency of a car
D. A scale to designate the specific gravity of mineral oils
66: What is the range of Diesel fuel's API gravity?
A. 32 to 55 API
B. 18 to 41 API
C. 45 to 60 API
D. 10 to 15 API
67: What is the pressure of the atmosphere at sea level?
A. 12.3 psi
B. 11.9 psi
C. 15.2 psi
D. 14.7 psi
68: What does it mean to atomize?
A. To spread a liquid over a surface
B. To evaporate a liquid
C. To mix a liquid with a gas
D. To break up a liquid into extremely fine particles.
69: What does the word "Axial" mean?
A. Perpendicular to the center line of a cylinder or shaft
B. Extending along or in the direction of an axis
C. Parallel to the center line of a cylinder or shaft.
D. At a right angle to the center line of a cylinder or shaft
70: What is an Axis?
A. A line about which a body rotates or about which it is arranged.
B. A center line
C. A line perpendicular to the x-axis
D. A line parallel to the x-axis
71: What is Babbitt used for?
A. Making tools
B. For Plumbing
C. For electrical wiring
D. Lining bearings
72: What is bock pressure?
A. The resistance to the normal flow of gases and liquids.
B. The amount of space an object takes up in a given container.
C. The force needed to move an object through a liquid
D. A measure of how much liquid is in a container
73: What is the bedplate?
A. The part of the engine that houses the crankshaft
B. A structural component of an airplane
C. The lower part of the engine resting on the foundation.
D. A tool used to measure angles
74: What is the interior diameter of an engine or compressor cylinder called?
A. Compression ratio
B. Cylinder
C. Combustion chamber
D. Bore
75: What is the escape of gases from the engine cylinder into the crankcase called?
A. Ring-sticking
B. Incomplete combustion
C. Engine knocking
D. Blow-by
76: What is the useful horsepower delivered by an engine that may be found by the use of a prony brake?
A. Belt horsepower
B. Brake horsepower
C. Boiler horsepower
D. British horsepower
77: What does bmep stand for?
A. Basic moving equilibrium point
B. Break master engine parts
C. British manufactured engineered parts
D. Brake mean effective pressure
78: How many degrees Fahrenheit does one British thermal unit raise the temperature of one pound of water?
A. Ten degrees Fahrenheit
B. Twenty degrees Fahrenheit
C. Five degrees Fahrenheit
D. One degree Fahrenheit
79: What is burning commonly substituted for?
A. Eruption
B. Combustion
C. Perspiration
D. Inflammation
80: What does the term "by-pass" refer to?
A. A passage which permits a liquid or gas to take a course other than that normally used.
B. An detour around a city
C. Extra credit given to students
D. A type of surgery
81: What is the purpose of a cam?
A. To impart a desired motion to poppet valves
B. To act as a switch
C. To store energy
D. To provide power
82: What is the camshaft?
A. The driving shaft of an engine to which the propeller is attached.
B. The shaft which carries the various cams required for the operation of inlet, exhaust, fuel, and starting-air valves.
C. A heavy metal bar used to secure a door or gate.
D. A large horizontal beam used for propelling a ship
83: What is the "cam follower"?
A. That part of the push rod that is in contact with the cam.
B. A device used to measure an angle
C. The raised portion of a a cam that actuates a valve
D. A follower is a type of valves
84: What is the main constituent of liquid and solid fuels?
A. Carbon
B. Nitrogen
C. Hydrogen
D. Oxygen
85: Carbon dioxide is a(n) ___________?
A. Solid
B. Liquid
C. Gas
D. Plasma
86: What is carbon monoxide?
A. A gas composed of molecules of only oxygen
B. A liquid made up of molecules of carbon and oxygen
C. Gas composed of molecules made up of one atom of carbon and one of oxygen.
D. A gas composed of molecules of only carbon
87: What is the name of the force that tends to pull objects away from the axis of rotation?
A. Centrifugal force
B. Centripetal force
C. Gravitational force
D. Magnetic force
88: What is cetane?
A. A hydrocarbon used in testing the ignition quality of diesel fuels.
B. A measure of how much compression a given fuel can withstand before detonating
C. The octane rating of a fuel
D. The additive used in diesel fuel to prevent gelling
89: What is the cetane number?
A. A percentage indicating the ignition quality of diesel fuels.
B. An empirical formula for determining the lean do not run conditions in an internal combustion engine
C. The speed of sound in a particular medium
D. The number of carbon atoms in a molecule of a compound
90: What is cetene?
A. A metal
B. A gas
C. An element on the periodic table
D. A hydrocarbon
91: What is a Chamfer?
A. A sloped edge.
B. A 45 degree angle.
C. A beveled corner.
D. A decorative edge.
92: What is the main function of a check valve?
A. To regulate the passage of a liquid or gas in one direction only.
B. To allow the passage of a liquid or gas in one direction or another.
C. To stop, or check, reverse flow.
D. To allow the passage of a liquid or gas in one direction only.
93: Clearance is the space between a moving and a stationary part that is required to allow for what?
A. Air to circulate
B. Electricity to flow
C. Lubrication and for expansion and contraction with a change of temperature.
D. For two objects to not touch
94: What is a coefficient?
A. A number that decreases the value of a variable.
B. A ratio; a factor or quantity that remains constant.
C. A number that increases the value of a variable.
D. A number representing the value of a variable.
95: What is combustion?
A. A chemical reaction between two substances in the presence of oxygen
B. The rapid oxidation, or combination, of a combustible such as carbon, hydrogen, or sulfur, with oxygen of air.
C. The process of burning
D. The act of setting fire to something
96: What is the combustion chamber?
A. The mixture of fuel and air that burns in the engine
B. The part of the engine where the pistons are located
C. The amount of air and fuel that is let into the engine
D. The space above the piston in which the fuel-air mixture starts to burn
97: What is the definition of compression?
A. The act or result of pressing a substance into a liquid.
B. The act or result of expanding a substance into a larger space.
C. The act or result of pressing a substance into a solid.
D. The act or result of pressing a substance into a smaller space.
98: WHAT IS COMPRESSION PRESSURE?
A. The pressure of the air charge at the beginning of the compression stroke.
B. The pressure of the air charge at the end of the compression stroke.
C. The pressure of the air charge during the stroke.
D. The pressure of the air charge at the end of the intake stroke.
99: What is a compression relief?
A. A device to reduce the compression in a cylinder and thus to make cranking easier.
B. A device that is used in conjunction with a crankshaft to make cranking easier.
C. A device to make the cylinder larger and thus to make cranking easier.
D. A device to increase the compression in a cylinder and thus to make cranking harder.
100: What do compression rings do?
A. Increase compression pressure
B. Decrease compression pressure
C. Provide a seal against excessive oil consumption
D. Seal against loss of compression pressure and against gas blowing.
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