plz help me w/ the answers i have n tell me if i'm wrong.
1. An automotive engine's camshaft rotates at
A. the same speed as the crankshaft
B. one-quarter the speed of the crankshaft
C. one-half the speed of the crankshaft
D. twice the speed of the crankshaft
my answer c
2. The type of engine that contains one camshaft mounted in its cylinder head is called
A. an overhead valve engine
B. an overhead camshaft engine
C. a double-overhead camshaft engine
D. a push rod engine
my answer b
3. The part of the poppet valve that contacts the valve seat is called the
A. face
B. stem
C. margin
D. head
my answer a
5. Which of the following components controls the opening and closing of the valves in an engine?
A. the crankshaft journals
B. the camshaft lobes
C. the rocker arms
D. the push rod
my answer d
7. The crankshaft parts that are supported in the engine block by bearing inserts are called
A. rod journals
B. main journals
C. crankshaft throws
D. lobes
my answer a
8. During an engine's intake stage, what passages inside the cylinder head must the incoming air-and-fuel mixture flow through in order to enter the cylinder?
A. the intake ports
B. the exhaust manifold
C. the valve guide
D. the cylinder bore
my answer c
9. Which of the following components serves as both a cover for the bottom of the engine block and a reservoir for engine oil?
A. the valve cover
B. the oil pan
C. the front cover
D. the lubrication retainer
my answer b
11. In most engines, the head of the intake valve is
A. slightly larger than the head of the exhaust valve
B. much smaller than the head of the exhaust valve
C. the same size as the head of the exhaust valve
D. a different shape than the head of the exhaust valve
my answer a
12. In an automotive engine, the wrist pin connects
A. the connecting rod to the crankshaft
B the crankshaft to the camshaft
C. the piston to the connecting rod
D. the valve to the cylinder head
my answer c
13. Which of the following components helps to limit the front-to-back movement of the crankshaft?
A. the cam bearing
B. the flywheel
C. the thrust bearing
D. the vibration dampener
my answer d
14. The up-and-down motion of the piston is converted to rotary motion by the
A. cylinder head and the valves
B. bearings and the piston rings
C. push rods and the rocker arms
D. connecting rod and the crankshaft
my answer b
15. In a typical automotive engine, the piston contains _ compression ring(s).
A. one
B. two
C. three
D. four
my answer b
16. Which of the following components is an external passageway that connects an engine's fuel system to a cylinder head port?
A. the exhaust manifold
B. the intake manifold
C. the intake valve
D. the exhaust valve
my answer c
17. Which of the following lists the stages of the four-stroke engine cycle in the correct order of operation?
A. power, intake, exhaust compression
B. intake, power, compression, exhaust
C. exhaust, power, intake, compression
D. intake, compression, power, exhaust
my answer d
18. The space between the top of the valve stem and the rocker arm is called the
A. valve clearance
B. end play
C. bearing thrust
D. valve margin
my answer c
19. The component in the cylinder head that hold a valve in place and prevents the valve ste4m from moving side to side is the
A. valve spring
B. valve guide
C. valve cover
D. retainer clip
my answer a
20. The top of the cylinder head is sealed by
A. valve cover
B. front cover
C. oil pan
D. oil retainer
my answer b
21. The area in the cylinder head where the air-and-fuel mixture is burned is called the
A. combustion chamber
B. intake port
C. exhaust port
D. valve guide
my answer a
22. A typical oil control ring consists or _ separate part(s).
A. one
B. two
C. three
D. four
my answer a
23. During engine operation, the total distance that a valve opens is called the
A. rise
B. lift
C. duration
D. stroke
my answer b
3) that part is mostly called the disk, but face is ok.
7) I disagree
8) I disagree
13) I disagree
14) I disagree
I quit at 15, had to go.
16, 18, 19 wrong, IMO
20,22 I disagree.
7. is ......b
1: C 11: A 21: A
2: B 12: C 22: C
3: A 13: C 23: B
5: B 14: D
7: B 15: B
8: A 16: B
9: B 17: D
18: A
19: B
20: A
these are the correct answers for sure
the above are right except 5)B 6)d
8)a 10)B
1. C Correct
2. B Correct
3. A Correct
4. A Correct
5. B Correct
6. D Correct
7. B Correct
8. A Correct
9. B Correct
10. B Correct
11. A Correct
12. C Correct
13. C Correct
14. D Correct
15. B Correct
16. B Correct
17. D Correct
18. A Correct
19. B Correct
20. A Correct
21. A Correct
22. C Correct
23. B Correct
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1. The correct answer is A. the same speed as the crankshaft. The camshaft rotates once for every two rotations of the crankshaft. You were incorrect in choosing C.
2. The correct answer is B. an overhead camshaft engine. This type of engine has the camshaft mounted in the cylinder head. You were correct in choosing B.
3. The correct answer is D. head. The part of the poppet valve that contacts the valve seat is called the head. You were incorrect in choosing A.
5. The correct answer is B. the camshaft lobes. The camshaft lobes control the opening and closing of the valves in an engine. You were incorrect in choosing D.
7. The correct answer is B. main journals. The crankshaft parts that are supported in the engine block by bearing inserts are called main journals. You were incorrect in choosing A.
8. The correct answer is A. the intake ports. The incoming air-and-fuel mixture flows through the intake ports in the cylinder head in order to enter the cylinder. You were incorrect in choosing C.
9. The correct answer is B. the oil pan. The oil pan serves as both a cover for the bottom of the engine block and a reservoir for engine oil. You were correct in choosing B.
11. The correct answer is A. slightly larger than the head of the exhaust valve. In most engines, the head of the intake valve is slightly larger than the head of the exhaust valve. You were correct in choosing A.
12. The correct answer is C. the piston to the connecting rod. The wrist pin connects the piston to the connecting rod in an automotive engine. You were correct in choosing C.
13. The correct answer is C. the thrust bearing. The thrust bearing helps to limit the front-to-back movement of the crankshaft. You were correct in choosing C.
14. The correct answer is D. the connecting rod and the crankshaft. The up-and-down motion of the piston is converted to rotary motion by the connecting rod and the crankshaft. You were incorrect in choosing B.
15. The correct answer is C. three. In a typical automotive engine, the piston contains three compression rings. You were incorrect in choosing B.
16. The correct answer is B. the intake manifold. The intake manifold is an external passageway that connects an engine's fuel system to a cylinder head port. You were incorrect in choosing C.
17. The correct answer is D. intake, compression, power, exhaust. The stages of the four-stroke engine cycle occur in the following order: intake, compression, power, exhaust. You were correct in choosing D.
18. The correct answer is A. valve clearance. The space between the top of the valve stem and the rocker arm is called the valve clearance. You were incorrect in choosing C.
19. The correct answer is B. valve guide. The valve guide holds a valve in place and prevents the valve stem from moving side to side. You were incorrect in choosing A.
20. The correct answer is A. valve cover. The top of the cylinder head is sealed by the valve cover. You were incorrect in choosing B.
21. The correct answer is A. combustion chamber. The area in the cylinder head where the air-and-fuel mixture is burned is called the combustion chamber. You were correct in choosing A.
22. The correct answer is C. three. A typical oil control ring consists of three separate parts. You were correct in choosing C.
23. The correct answer is B. lift. The total distance that a valve opens during engine operation is called lift. You were correct in choosing B.
Out of the 15 answers, you had 8 correct answers. Keep practicing and reviewing the material to improve your knowledge.