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Engine Repair 1 FINAL

Total questions: 100

Worksheet time: 1hrs 4mins

Name
Class
Date
1.

Identify the following Part

a)

Tappet

b)

Pushrods

c)

Cam Lobes

d)

Valves

2.

Identify the following Part

a)

Tappet

b)

Pushrods

c)

Cam Lobes

d)

Valves

3.

The total volume of space displaced by the pistons traveling up and down inside all the cylinders is ________________.

a)

Horsepower

b)

Turbocharger

c)

Torque

d)

Displacement

4.

Volumetric efficiency is the ability of an engine to:

a)

Not create emissions

b)

Create heat

c)

Pull in air

d)

Distribute fuel evenly

5.

What is the compression ratio for most gasoline engines?

a)

6:1

b)

8:1

c)

12:1

d)

16:1

6.

Stroke is the distance the piston travels from TDC to ____________.

a)

BTDC

b)

TDC again

c)

BDC

d)

ABCD

7.

What is the fourth stroke in the 4 stroke (Otto) cycle?

a)

exhaust

b)

intake

c)

compression

d)

power

8.

What is the third stroke in the 4 stroke (Otto) cycle?

a)

exhaust

b)

intake

c)

compression

d)

power

9.

What is the second stroke in the 4 stroke (Otto) cycle?

a)

exhaust

b)

intake

c)

compression

d)

power

10.

What is the first stroke in the 4 stroke (Otto) cycle?

a)

exhaust

b)

intake

c)

compression

d)

power

11.

In a four stroke engine, gasoline must be mixed with the correct amount of _____________.

a)

Water

b)

Oil

c)

Carbon dioxide

d)

Air

12.

In a four stroke engine, _____ strokes are needed to complete _____ operating cycle.

a)

2, 1

b)

4, 1

c)

4, 2

d)

2, 4

13.

Flywheel

A
B
C
D
E
F
G
H
I
14.

Oil Pump

A
B
C
D
E
F
G
H
I
15.

Water Pump

A
B
C
D
E
F
G
H
I
16.

In which event is the piston driven down by the expansion of the burning air/fuel mixture?

a)

Intake

b)

Compression

c)

Power

d)

Exhaust

17.

The _________ creates the spark to ignite the air/fuel mixture.

a)

spark plug

b)

glow plug

c)

flint

d)

striker

18.

In a four stroke engine, a piston travels up _____ and down ______.

a)

once, once

b)

twice, twice

c)

once, twice

d)

twice, once

19.

Which valve is open during the intake stroke?

a)

Both

b)

Neither

c)

Intake

d)

Exhaust

20.

Which valve is open during the compression stroke?

a)

Both

b)

Neither

c)

Intake

d)

Exhaust

21.

During the intake stroke, the piston travels to __________.

a)

top dead center

b)

bottom dead center

c)

the mid-point

d)

none of the above

22.

During a four stroke engine cycle, the crankshaft makes how many rotations?

a)

1

b)

2

c)

3

d)

4

23.

The _______ stores rotational energy and keeps the crankshaft spinning smoothly.

a)

crankshaft

b)

counterweights

c)

flywheel

d)

piston

24.

Two stroke engines complete all events in ______ strokes.

a)

1

b)

2

c)

3

d)

4

25.

What is the purpose of fuel pressure testing?

a)

The purpose of fuel pressure testing is to check the oil level in the engine.

b)

The purpose of fuel pressure testing is to diagnose fuel delivery issues and ensure proper fuel flow to the engine.

c)

The purpose of fuel pressure testing is to clean the fuel injectors.

d)

The purpose of fuel pressure testing is to measure the temperature of the fuel.

26.

_______ ride on the camshaft lobes to actuate the pushrods, rocker arms, and valves.

a)

Tappets

b)

Lifters

c)

Both A and B

d)

Neither A nor B

27.

At higher engine speeds, the time available to burn the air fuel mixture _______, while the time required to completely burn the mixture remains essentially the same.

a)

Increases

b)

Stays the same

c)

Decreases

d)

None of the above

28.

According to ________ law, in a sealed chamber, the pressure and temperature of a gas are directly related to each other.

a)

Pascal's

b)

Newton's

c)

Kirchhoff's

d)

Charles's

29.

Technician A says that compression pressures have to be lower in combustion ignition engines. Technician B says that the heat of compression ignites the fuel in a compression ignition engine. Who is correct?

a)

Technician A

b)

Technician B

c)

Both A and B

d)

Neither A nor B

30.

The rate in time and distance at which a force is produced is known as:

a)

momentum.

b)

energy.

c)

horsepower.

d)

torque.

31.

Knowing that pressure ____ when the volume of a sealed container is _____ will help you to understand the need for sealing the chamber for maximum power.

a)

Rises; reduced

b)

Lowers; reduced

c)

Rises; increased

d)

Lowers; increased

32.

Technician A says that movement does not have to occur to have torque. Technician B says that torque is a twisting force. Who is correct?

a)

Technician A

b)

Technician B

c)

Both

d)

Neither

33.

The function of a thermostat is:

a)

uses an impeller to force coolant through the engine coolant passages.

b)

stays closed until operating temperature is reached, then allows coolant flow

c)

stores coolant

d)

primary heat exchanger for the vehicle engine

34.

The function of a water pump is:

a)

uses an impeller to force coolant through the engine coolant passages.

b)

stays closed until operating temperature is reached

c)

stores coolant

d)

primary heat exchanger for the vehicle engine

35.

Engine oil is graded by numbers E.g. 0W-30 the numbers refer to what?

a)

The oils ability to withstand heat

b)

How long the oil should stay in the engine

c)

The colour of the oil

d)

The Viscosity

36.

The oil pick up pipe is fitted with a mesh over one end this is to

a)

Prevent large foreign objects being sucked into the oil system

b)

To strain the oil and keep it clean

c)

To filter the oil down to one micron

d)

To increase the oil pressure

37.

What is the purpose of a fuel injection system in an engine?

a)

To regulate the engine temperature.

b)

To increase the engine's horsepower.

c)

To reduce the engine's fuel efficiency.

d)

To deliver the right amount of fuel to the combustion chamber at the right time.

38.

What is ignition timing and why is it important for engine performance?

a)

Ignition timing is the precise timing of the spark plug firing in the combustion chamber, and it is important for engine performance as it affects power output, fuel efficiency, and emissions.

b)

Ignition timing is the adjustment of the engine's exhaust system and it is important for engine performance as it reduces noise pollution.

c)

Ignition timing is the measurement of the engine's temperature and it is important for engine performance as it prevents overheating.

d)

Ignition timing is the process of starting the engine and it is important for engine performance as it ensures the engine starts smoothly.

39.

Tech A says the intake stroke is happening when the piston is traveling from the top (TDC) to the bottom (BDC). Tech B says the following stroke is the compression stroke, and it compresses the air trapped in the cylinder. Who is correct?

a)

TECH A

b)

TECH B

c)

TECH A & B

d)

NEITHER TECH A OR B

40.

How many crankshaft rotations are required to complete all four strokes of the Otto cycle?

Select one:

a)

TWO

b)

THREE

c)

FOUR

d)

ONE

41.

What are the four strokes of 1 complete engine cycle in the order of occurrence?

a)

intake, power, compression, exhaust

b)

intake, compression, exhaust, power

c)

compression, power, exhaust, intake

d)

intake, compression, power, exhaust

42.

Who developed the concept of the CI engine?

a)

Vin Diesel

b)

Nicolaus August Otto

c)

Rudolph Diesel

d)

Clessie Cummins

43.

Turns reciprocating motion (up and down) into rotary motion (round and round

a)

Camshaft

b)

Crankshaft

c)

Piston

d)

Valve

44.
Camshaft turns at what speed compared to the crankshaft
a)
Same speed
b)
1/2 Speed
c)
2/1 Speed
d)
1/1 Speed
45.
What keeps the oil below the piston, and compression above the piston?
a)
Bearing
b)
Rings
c)
Necklaces
d)
Braclets
46.

What is the name of this part?

a)

Engine Block

b)

Cylinder Head

c)

Oil Pan

d)

Sump

47.

What does BDC stand for?

a)

Bottom Dead Center

b)

Beneath Dead Center

c)

Below Drop Center

d)

Behind Dead Center

48.

What is the name of this part?

a)

Piston

b)

Connecting Rod

c)

Camshaft

d)

Sway Bar Link

49.

What does the term TDC refer to?

a)

Top Dead Center

b)

Torrential Down Pour Coming

c)

Thermal Decay Combustion

d)

Top-Down Center

50.

Internal Combustion engines can be classified by the type of ignition they have. What type of ignition classifications is a gas engine?

(a)  

51.

What is the difference between an OHC engine and an OHV engine?

a)

Spelling

b)

Nothing means the same thing

c)

Location of the cam shaft

d)

Fuel Type

52.

Which of the following is NOT correct concerning valve angles?

a)

Valve faces are machined at an angle to wedge themselves into the seat to improve sealing.

b)

The degree of angle determines the valve port's flow characteristics.

c)

A 45-degree angle is common and is better at self-centering the valve at closure while wedging the valve tighter to the valve seat.

d)

Some exhaust and intake valve face angles are between 30 and 50 degrees to permit better flow over the edge of the seat.

53.

Cylinder head gasket fire rings are traditionally manufactured from __________.

a)

Mild Steel

b)

Stainless Steel

c)

Elastomeric

d)

High-carbon steel

54.

Since the early 1990s, cylinder head gaskets have been manufactured from __________.

a)

Multilayered steel

b)

Copper

c)

Asbestos

d)

Metal

55.

The rate or speed at which work is performed

a)

Force

b)

Work

c)

Power

d)

All are correct

e)

Neither

56.

Torque is a twisting force applied at a radius from that point

a)

True

b)

False

c)

Maybe

57.

Fill the blank:

The more _____ a gas has, the more _____ it can do.

a)

color; damage

b)

density; work

c)

molecules; odor

d)

energy; work

58.

Measured in ft-lb per second or ft-lb per minute

a)

Power

b)

Force

c)

Work

59.

Tech A says horsepower is calculated from torque and rpm. Tech B says torque and rpm are the measured quantities of engine output. Who is correct?

a)

Tech A

b)

Tech B

c)

Both

d)

Neither

60.

Match the following

a)

The bore in which a piston travels

1.

Cylinder

b)

An engine part that slides back and forth in a cylinder

2.

Piston

c)

An engine part that links a piston to the crankshaft

3.

Connecting rod

d)

An engine part that converts reciprocating motion created by the engine pistons to rotating motion

4.

Crankshaft

61.

Reorder the following events that occur in an internal combustion engine.

a)

Intake

b)

Compression

c)

Power

d)

Exhaust

1)
2)
3)
4)
62.
A controlled explosion occurs on the ______stroke?
a)
Power Stroke
b)
Intake Stroke
c)
Compression Stroke
d)
Exhaust Stroke
63.
The ring nearest the end of the connecting rod is called a_________ring?
a)
Scraper ring
b)
Oil ring
c)
Compression ring
d)
All of the above
64.

Match the following

a)
1.

ECM

b)
2.

Crank Sensor

c)
3.

ABS Sensor

d)
4.

MAF Sensor

e)
5.

Oxygen Sensor

65.

What is this tool used for?

a)

Piston ring groove cleaner

b)

Piston Ring Sizing tool

c)

Replace Boot Spurs

d)

Valve Grinding

66.

What is this tool used for?

a)

Vale lapping/grinding tool

b)

Piston puller

c)

valve compression tool

d)

Valve remover

67.

Match the following

a)

1.

Piston ring Compressor

b)

2.

Valve Spring retainers

c)

3.

Main Bearings

d)

4.

Piston Rings

e)

5.

Cam Shaft

68.

Match the following

a)

1.

Cylinder Hone

b)

2.

Wrist Pin

c)

3.

Connecting Rod

d)

4.

Hand Valve Grinding Tool

e)

5.

Pistons

69.

What model year is the vehicle

a)

2005

b)

2011

c)

2000

d)

2001

70.

Engines are either air cooled or liquid cooled

a)

True

b)

False

71.

Types of Spark Plugs. Choose all that apply.

a)

Iridium

b)

Stainless

c)

Copper

d)

Platinum

72.

A spark plug needs _________ to create a spark.

a)

No gap

b)

Low voltage

c)

High voltage

73.

The ignition coil transforms ______________ to ___________.

a)

High voltage ; low voltage

b)

Low voltage; high voltage

74.

Atmospheric pressure is _____ psi at sea level.

a)

14.5

b)

14.6

c)

14.7

d)

14.8

75.

In GDI engines, which of the following is the least risky way to remove the carbon on intake valves and runners, especially if the buildup is very heavy?

a)

Removing the cylinder head, disassembling it, and cleaning it

b)

Removing the intake manifold and using a crushed walnut shell blaster to blast away the carbon

c)

Removing the intake manifold and using a chemical cleaner to soften and dissolve the carbon so it can be removed

d)

Induction cleaning

76.

The ________ design uses a one-way valve to hold pressure in the system while the pressure tester is connected and disconnected to the fuel rail.

a)

O-ring valve

b)

Quick-connect valve

c)

Schrader valve

d)

Fuel pressure tester valve

77.

Tech A says that fuel pump pressure can often be tested by accessing a test port. Tech B says that fuel pump volume can be affected by the condition of the fuel injectors. Who is correct?

a)

Tech A

b)

Tech B

c)

Both Techs A and B

d)

Neither Tech A nor B

78.

What year was Can standardized ?

a)

1986

b)

1991

c)

1993

d)

2003

79.

Network related codes will start with a

a)

P

b)

U

c)

B

d)

C

80.

Which terminal of the OBD-II data link connector is the 12 volt for all vehicles?

a)

1

b)

5

c)

15

d)

16

81.

What does CAN stand for?

a)

Controller Area Network

b)

Constructive Advice Network

c)

Cant Arrange Neutrons

d)

Control All Network

82.

In a vehicle, thermistors are used in various sensors related to:

Select one:

a)

pressure.

b)

temperature.

c)

voltage.

d)

speed.

83.

In an engine management system, _______ monitor various operating conditions.

Select one:

a)

Memory devices

b)

Sensors

c)

drivers

d)

Data processors

84.

Which of the following modes is used by technicians to fool the engine into cranking without starting during a cranking sound diagnosis test?

Select one:

a)

Fuel shutoff mode

b)

Clear flood mode

c)

Key on, engine off mode

d)

Stoichiometric mode

85.

Technician A says if you are testing an ignition related no-start problem, you should always check for available spark at an ignition wire first. Technician B says if you have a test light connected to the negative side of the coil while cranking and the test light flickers, you need to test the secondary ignition system. Who is right?

a)

A Only

b)

B Only

c)

Both A and B

d)

Neither A nor B

86.
PPE stands for _________  ________ ________
a)
Professional Protective Equipment
b)
Proactive  Protective Equipment
c)
Personal Protective Equipment
d)
Personal Prevention Equipment
87.
Most accidents don’t just happen, they are caused by human 
a)
Sleepiness
b)
Error
c)
Thoughts
d)
Forgetfulness
88.

When doing the cylinder leakage test, it is acceptable to have a small amount of leakage past the

a)

head gasket

b)

intake valve

c)

exhaust valve.

d)

piston rings

89.

When testing intake manifold vacuum, a low steady reading at idle is likely to be caused by:

a)

a burned exhaust valve.

b)

a partially restricted exhaust.

c)

late ignition timing or valve timing.

d)

one of the answers listed

90.

The automotive cooling system provides a means of transferring heat from the hot parts of the engine to ambient air.

a)

True

b)

False

91.

The liquid used for the cooling system is known as

a)

coolant.

b)

radiator fluid.

c)

gasahol.

d)

styrene

92.

Which of the following is NOT a function of lubricating oil?

a)

Cool

b)

Clean

c)

Seal

d)

Burn

93.

All of the following are advantages of synthetic oil over conventional oil EXCEPT:

a)

cost effectiveness.

b)

better low temperature viscosity.

c)

fewer wax impurities.

d)

operation at higher temperatures.

94.

Technician A says that oil pressure is vital to engine operation. Technician B says that a pressure sensor can turn on a light to alert the driver of low oil pressure. Who is correct?

a)

Tech A

b)

Tech B

c)

Both A and B

d)

Neither A nor B

95.

The oil pump is designed to deliver the correct amount of oil for the engine speed and the thermal setting.

a)

True

b)

False

96.

What is being measured?

a)

Cam Lobe Lift

b)

Cam Lobe Diameter

c)

Cam Shaft Bearing Wear

d)

None of these

97.

What measurement is being taken?

a)

Piston to Deck

b)

Head clearance

c)

Block to bore

d)

None of these

98.

What is being Measured?

a)

Piston cylinder bore

b)

Bore depth

c)

Valve size

d)

head clearance

99.

Identify the part:

a)

Timing Gear

b)

Tire

c)

Balancer

d)

Flywheel

100.

What material is commonly used for manufacturing spark plug insulators?

a)

Ceramic

b)

Plastic

c)

Metal

d)

Rubber

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