Test Bank B CDE Small Engines Flashcards
Which of the following would not be found in the crankcase?
a. oil
b. breather
c. camshaft
d. connecting rod
B: Breather
- Which of the following would not be found in the crankcase?
a. oil slinger
b. connecting rod cap
c. emulsion tube
d. tappets
C: Emulsion tube
Which of the following would not be found in the crankcase?
a. welch plug
b. crankpin journal
c. mechanical governor lever
d. flyweights
A: welch plug
The camshaft opens and closes the:
a. intake valve
b. exhaust valve
c. reed valve
d. both a and b
D: Both A and B
__________ are off-center enlargements on the camshaft that converts rotary motion to reciprocating motion.
a. flyweights
b. lifters
c. lobes
d. gears
C: Lobes
The camshaft has _____ lobes.
a. 2
b. 3
c. 4
d. 5
A: 2
On most small engines the lobes of the camshaft are located directly under the __________.
a. piston c. valves
b. crankshaft
c. valves
d. tappets
D: Tappets
On some engine designs, the camshaft can be located in the cylinder head above the __________.
a. valves
b. tappets
c. carburetor
d. governor
A: Valves
Camshafts are made of:
a. steel
b. cast iron
c. both a and b
d. neither a nor b
C: Both A and B
The surface of the camshaft is ____________ to improve wear-ability.
a. hardened
b. painted
c. enlarged
d. treated
A: Hardened
To make hand cranking easier, some small engines have an automatic ____________ mechanism on the
camshaft.
a. governor control
b. oil slinger
c. compression release
d. power release
C: Compression release
The automatic compression release mechanism on the camshaft lifts the ________ valve slightly during
cranking and releases part of the compression pressure.
a. intake
b. exhaust
c. reed valve
d. both a and b
B: Exhaust
Which of the following is a part of some automatic compression release mechanisms that are installed on
some small engines?
a. a bolt and a nut
b. a washer
c. two # 10 fine threaded screws
d. flyweights
D: Flyweights
Which of the following is a part of some automatic compression release mechanisms that are installed on
some small engines?
a. a tab
b. a spring
c. linkage
d. both a and b
D: Both A and B
Automatic compression release mechanisms are only engaged until the engine reaches approximately
________ rpm’s.
a. 100
b. 600
c. 1,000
d. 2,500
B: 600
The camshaft is driven by a __________ on the crankshaft.
a. lobe
b. gear
c. spring
d. flywheel
B: Gear
The camshaft gear and crankshaft gear has ____________ that must be aligned in order for the valves to open
and close at the right time.
a. lobes
b. a keyway
c. teeth
d. timing mark
D: Timing Mark
The camshaft gear is ________ as large as the crankshaft gear.
a. 4 times
b. 3 times
c. 2.5 times
d. 2 times
D: 2 times
How many revolutions does a camshaft make to one revolution of the crankshaft?
a. 1/2
b. 1
c. 1 1/2
d. 2
A: 1/2
How many revolutions does a crankshaft make to each power stroke of the engine?
a. 1
b. 2
c. 3
d. 4
B: 2
Counterweights are designed into the crankshaft to provide:
a. more power
b. increased engine speed
c. engine balancing
d. better ignition
C: engine balancing
The tapered end of the crankshaft has a __________.
a. hollow inside
b. needlepoint
c. keyway
d. magnet
C: Keyway
The crankshaft has three ____________.
a. moving parts
b. threaded parts
c. heads
d. journals
D: Journals
The three crankshaft journals are called:
a. flywheel, crankpin, and pto
b. tapered, round, and cylindrical
c. magneto, crankpin, and pto
d. magneto, crankpin, and stem
C: magneto, crankpin, and PTO