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Worksheetsmonthly test december 2025
Total questions: 30
Worksheet time: 15mins
sequence of coolant circulation is
pump-radiator-block-head
pump-block-head-radiator
pump-block-radiator-head
pump-radiator-head-block
Which type of engine is most commonly used in cars?
Diesel engine
Steam engine
Gasoline engine
Electric engine
What is the role of the crankshaft in an engine?
Convert piston movement into rotary motion
Control fuel injection
Maintain engine temperature
Measure engine speed
How many strokes are there in a typical internal combustion engine cycle?
2
4
6
8
What does "V" refer to in V6 and V8 engines?
The shape of the piston
The number of valves
The arrangement of the cylinders
The engine speed
What does RPM stand for?
Revolutions Per Mile
Revolutions Per Minute
Resistance Power Measurement
Rotational Power Mechanism
In a four-stroke engine, which stroke is responsible for igniting the fuel?
Intake stroke
Compression stroke
Power stroke
Exhaust stroke
What is the role of the camshaft in an engine?
To regulate the timing of the intake and exhaust valves
To inject fuel into the cylinder
To cool the engine
To maintain the oil flow
Which component of the engine helps cool it down?
Alternator
Radiator
Piston
Flywheel
What kind of engine uses spark plugs for ignition?
Diesel engine
Gasoline engine
Steam engine
Electric engine
Where is the piston located in an engine?
Cylinder
Crankshaft
Alternator
Timing chain
What is the main purpose of the intake manifold?
To distribute air into the engine’s cylinders
To regulate oil flow
To ignite fuel
To measure the engine’s speed
What component connects the piston to the crankshaft?
Connecting rod
Camshaft
Valve stem
Flywheel
What is engine "compression ratio"?
The ratio of air to fuel in the combustion chamber
The ratio of the cylinder's volume at its largest to its smallest
The ratio of engine power to fuel consumption
The ratio of engine speed to gear speed
What is the primary function of an automobile engine?
To store fuel
To convert fuel into mechanical energy to move the vehicle
To control the vehicle's speed
To provide electricity to the vehicle
The three basic cylinder arrangements for automotive engines are
flat radial,and V
in a row,in line,and opposed
in line,V,and opposed
V,double row,and opposed
Materials used in making chasis of cars
Steel
Aluminium
Copper
Mild steel
How does a diesel engine ignite fuel?
Using spark plugs
Compressing air in the cylinders until it heats up
Using an electric motor
With a turbine
space in which a piston travels
power
cylinder
pre-ignition
carburetor
turns reciprocating motion of the piston into rotating motion
exhaust valve
intake
journal
crankshaft
device which mixes air and fuel
carburetor
exhaust
detonation
spark-plug
process of getting fuel and air required for combustion
exhaust valve
detonate
intake
resonate
process of getting fuel and air required for combustion
exhaust valve
detonate
intake
resonate
What is the primary function of the fuel system in an internal combustion engine?
To cool the engine
To supply air to the engine
To supply fuel to the engine
To lubricate engine parts
What is the primary function of the fuel system in an internal combustion engine?
To cool the engine
To supply air to the engine
To supply fuel to the engine
To lubricate engine parts
Which part of the ignition system is directly responsible for igniting the air-fuel mixture in the engine's cylinders?
Ignition coil
Spark plug
Distributor
Alternator
The following are all advantages of diesel engines, EXCEPT __________.
Select one:
Greater durability and longevity
Spark ignition
BETTER FUEL ECONOMY
MORE POWER
How many crankshaft rotations are required to complete all four strokes of the Otto cycle?
Select one:
TWO
THREE
FOUR
ONE
Diesel engines are classified by__________.
Operating Cycle
Power Output
Application
All of these are correct.
What is the purpose of the oil pump in an engine?
To filter impurities from the fuel
To ignite the fuel
To cool the engine
To circulate oil for lubrication