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WorksheetsGeneric Basic 4 Stroke Engines
Total questions: 20
Worksheet time: 14mins
Name
Class
Date
1.
Turns reciprocating motion (up and down) into rotary motion (round and round
a)
Camshaft
b)
Crankshaft
c)
Piston
d)
Valve
2.
The definition of a cam is.
a)
Something that moves a valve
b)
A stick with bumps
c)
A spinning piece of metal
d)
Circle with an offset hole.
3.
What is the order of operation of a 4 stroke engine
a)
Intake, Power, Compression, Exhaust
b)
Exhaust, Intake, Compression, Power
c)
Intake, Compression, Power, Exhaust
d)
Compression, Exhaust, Power, Intake
4.
What keeps the oil below the piston, and compression above the piston?
a)
Bearing
b)
Rings
c)
Necklaces
d)
Braclets
5.
What is valve timing?
a)
opening the valve at the right time
b)
closing the valve at the right time
c)
opening and closing of the valve at the right time
d)
not important
6.
Of the two valves inside the engine, which one is bigger?
a)
Intake
b)
Exhaust
c)
Same size
d)
Neither
7.
How many degrees of rotation does the crankshaft rotate to complete all the 4 stroke engine cycle.
a)
180
b)
360
c)
540
d)
720
8.
Fills the area of the engine called the Cylinder
a)
Lifter
b)
Filler
c)
Cam gear
d)
Piston
9.
The Acronym TDC means...
a)
Telephone Direct Call
b)
Tread Design Correction
c)
Top Dead Center
d)
Timing Done Correctly
10.
True or False: Diesel Engines Require SPARK Plugs
a)
True
b)
False
11.
True Or False: Rotary engines have a rotor instead of pistons.
a)
True
b)
False
12.
During an oil pressure test, the Gauge is installed in place of the ...
a)
Oil fill cap
b)
Oil Filter
c)
PCV Valve
d)
Sending unit
13.
Which of these fluids is classified as the most flammable?
a)
Engine oil
b)
Coolant
c)
Fuel oil
d)
Brake Fluid
14.
Broken piston rings are likely to cause:
a)
blue smoke from the exhaust
b)
black smoke from the exhaust
c)
no smoke from the exhaust
d)
white smoke from the exhaust
15.
Camshaft turns at what speed compared to the crankshaft
a)
Same speed
b)
1/2 Speed
c)
2/1 Speed
d)
1/1 Speed
16.
The length the piston moves from top to bottom or bottom to top is called
a)
Stroke
b)
Bore
c)
Movement
d)
Lenght
17.
Revolutions per minute (RPM) is the measurement of
a)
Piston Speed
b)
Camshaft direction
c)
What stroke is happening
d)
How fast the crankshaft is turning
18.
The rocker arm transfers
a)
Motion of cam to valve
b)
Oil to valve spring
c)
Speed to crankshaft to camshaft
d)
Direction of travel from piston to connection rod
19.
Compression is best defined as ___________________________.
a)
Expanding a small volume into a larger volume
b)
Reducing a larger volume into a smaller volume
20.
In power stroke both intake valve and exhaust valve are closed
a)
True
b)
False
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