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WorksheetsENGINES
Total questions: 30
Worksheet time: 35mins
What is the first stroke in the 4 stroke (Otto) cycle?
exhaust
intake
compression
power
Engine bore refers to:
An engine's horsepower
The diameter of a cylinder
How fast the crankshaft turns
Cylinder layout
Stroke is the distance the piston travels from TDC to ____________.
BTDC
TDC again
BDC
ABCD
The total volume of space displaced by the pistons traveling up and down inside all the cylinders is ________________.
Horsepower
Turbocharger
Torque
Displacement
______________________ is the travel distance of the piston.
stroke
bore
diameter
RPM
What is the compression ratio for most gasoline engines?
6:1
8:1
12:1
16:1
The measure of mechanical power is called _____________________?
Torque
Horsepower
Bore
RPM
What is the third stroke in the 4 stroke (Otto) cycle?
exhaust
intake
compression
power
When the intake valve closes. The piston moves..
downwards
upwards
sideways
clockwise
An engine is a device that changes _________ energy in fuel to __________ energy.
mechanical, chemical
chemical, mechanical
kinetic, chemical
chemical, kinetic
This links the piston to the crankshaft.
Connecting rod
Camshaft
Valve stem
Piston rings
In a four stroke engine, gasoline must be mixed with the correct amount of _____________.
Water
Oil
Carbon dioxide
Air
In a four stroke engine, _____ strokes are needed to complete _____ operating cycle.
2, 1
4, 1
4, 2
2, 4
Which valve is open during the compression stroke?
Both
Neither
Intake
Exhaust
Atmospheric Pressure also known as:
Barometric Pressure
Sea Level Pressure
Humidity Level
Doppler Effect
Intake Flow
Oxygen Sensor
ABS sensor
Fuel Pressure Sensor
MAF Sensor
Coolant Temp Sensor
Hall Effect Sensors:
Have 2 Wires
Have 3 Wires
Are used on Accelerator Pedals
Are used on Fuel Sending Units
Are used on Coolant Reservoirs
A Knock Sensor Detects:
Engine Misfires
Exhaust Leaks
Tire Imbalance
Distance Between you and the Next Vehicle
A potential Car-Jacker
A temperature sensitive variable resistor:
Thermistor
Hydrometer
Rheostat
Mercurometer
Potentiometer
During the intake stroke of a four-stroke engine, the intake
valve is closed, the exhaust valve is open, and the piston is moving up
valve is open, the exhaust valve is closed, and the piston is moving down
and exhaust valves are closed, and the piston is moving up
and exhaust valves are closed, and the piston is down
The cylinder head performs all of the following function except
houses the valves
covers the crankshaft
houses the spark plug(s)
seals the combustion chamber
An engine does not reach operating temperature while being driven. Which of these could be the cause?
A slipping water pump belt
A stuck open thermostat
A stuck closed thermostat
A clogged radiator passage
Name the item in the picture:
Gas Cap
Radiator Pressure Cap
Water Pump
Thermostat
Which engine valve configuration has the camshaft in the cylinder block.
Over Head Valve (OHV)
Over Head Cam (OHC)
Dual Over Head Cam (DOHC)
This is a trick question Mr. Gregoire
True or False: An engines cooling system is designed to transfer excess heat from the engine to the atmosphere.
True
False
What position are the valves in during the intake stroke
Intake Closed, Exhaust Closed
Intake Open, Exhaust Open
Intake Open, Exhaust Closed
I have no idea
Technician A says that the engine should be cleaned before checking for oil leaks. Technician B says that a florescent dye should be added to the engine oil when checking leaks with a black light. Who is correct?
Tech A
Tech B
Both A and B
Neither A nor B
What is the freeze point for coolant mixed with a 50/50 Antifreeze to water ratio ?
32*F
0*F
-35*F
-100*F
