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Worksheets

Ujian Akhir Semester TSM C2

Total questions: 89

Worksheet time: 2hrs 50mins

Name
Class
Date
1.

The component of a motorcycle that functions to convert electrical energy into motion energy is...

a)

Alternator

b)

Battery

c)

Starter motor

d)

Ignition coil

e)

CDI

2.

The part that regulates the mixture of fuel and air before entering the combustion chamber is...

a)

Radiator

b)

Carburetor

c)

Injector

d)

Cylinder

e)

CDI

3.

The main function of the battery in a motorcycle is...

a)

To store fuel

b)

To store electrical energy

c)

To supply power to the wheels

d)

To regulate engine speed

e)

To filter air

4.

In the ignition system, the component that functions to increase electrical voltage is...

a)

CDI

b)

Battery

c)

Coil

d)

Spark plug

e)

Spark plug cable

5.

The component that functions to reduce the speed of a motorcycle wheel is...

a)

Clutch

b)

Chain

c)

Brake

d)

Radiator

e)

Carburetor

6.

The main function of the chain in a motorcycle is...

a)

To transmit power from the engine to the rear wheel

b)

To reduce engine vibration

c)

To regulate the front wheel rotation

d)

To store backup power

e)

To regulate engine temperature

7.

The main part of a motorcycle that functions to support the rider's weight is...

a)

Chassis

b)

Engine

c)

Chain

d)

Brake

e)

Exhaust

8.

The component of a motorcycle that functions to regulate exhaust gas from the combustion chamber is...

a)

Carburetor

b)

Exhaust

c)

Clutch

d)

CDI

e)

Radiator

9.

The main component of the power system in a motorcycle that mixes fuel and air is...

a)

Cylinder

b)

Carburetor

c)

CDI

d)

Radiator

e)

Exhaust

10.

In the engine power system, the mixture of fuel and air is compressed by...

a)

Valve

b)

Alternator

c)

Radiator

d)

Chain

e)

Piston

11.

The combustion process in the engine power system begins with...

a)

Piston compression

b)

Spark from the spark plug

c)

Fuel spraying by the injector

d)

Exhaust gas release

e)

Valve adjustment

12.

The power system component that functions to convert the heat energy from combustion into motion energy is...

a)

Crankshaft

b)

Valve

c)

Clutch

d)

Piston

e)

Exhaust

13.

In a 4-stroke motorcycle engine, the step where the piston moves up to compress the mixture of air and fuel is called...

a)

Intake stroke

b)

Compression stroke

c)

Combustion stroke

d)

Exhaust stroke

e)

Cooling stroke

14.

The main function of the fuel system in a motorcycle is...

a)

To regulate engine temperature

b)

To reduce engine friction

c)

To provide a mixture of air and fuel

d)

To regulate wheel speed

e)

To convert energy

15.

What is the main function of the fuel system in a motorcycle?

a)

Regulate engine temperature

b)

Reduce engine friction

c)

Provide a mixture of air and fuel

d)

Regulate wheel speed

e)

Convert thermal energy into motion

16.

What is one of the main functions of the spark plug in the motorcycle engine power system?

a)

Filter fuel

b)

Inject fuel into the combustion chamber

c)

Reduce friction between components

d)

Regulate engine temperature

e)

Generate a spark for combustion

17.

Which electrical component in a motorcycle is responsible for storing electrical energy?

a)

Alternator

b)

CDI

c)

Battery

d)

Spark plug

e)

Magnet

18.

What is the main function of the coil in the ignition system?

a)

Store electrical energy

b)

Increase voltage for the spark plug

c)

Regulate ignition timing

d)

Control fuel flow

e)

Provide power for the lights

19.

Which electrical system in a motorcycle functions to regulate the timing of the spark?

a)

CDI

b)

Battery

c)

Coil

d)

Alternator

e)

Fuse

20.

Which electrical component is responsible for recharging the battery?

a)

CDI

b)

Coil

c)

Alternator

d)

Magnet

e)

Injector

21.

The main headlight of a motorcycle usually gets power directly from?

a)

Spark plug

b)

Battery

c)

Alternator

d)

CDI

e)

Magnet

22.

What is the function of the fuse in the motorcycle electrical system?

a)

Regulate the current entering the spark plug

b)

Regulate ignition timing

c)

Store electrical energy

d)

Protect electrical components from short circuits

e)

Generate electricity

23.

What is the main function of the magnet in a motorcycle?

a)

Store electricity

b)

Generate electrical current for the electrical system

c)

Turn on the headlight

d)

Regulate ignition timing

e)

Regulate wheel speed

24.

The electric starter system in a motorcycle uses energy derived from?

a)

Alternator

b)

Fuse

c)

CDI

d)

Coil

e)

Battery

25.

Which electrical component regulates the current and voltage to meet the needs?

a)

Fuse

b)

Regulator

c)

Alternator

d)

CDI

e)

Coil

26.

The working principle of a 2-stroke engine involves?

a)

Two piston strokes in one working cycle

b)

Four piston strokes in one working cycle

c)

Six piston strokes in one working cycle

d)

Piston stroke without compression

e)

Piston stroke without ignition

27.

In a 2-stroke engine, the mixture of fuel and air enters the combustion chamber through?

a)

Intake valve

b)

Exhaust

c)

Injector

d)

Transfer port

e)

Carburetor

28.

One of the advantages of a 2-stroke engine compared to a 4-stroke engine is?

a)

More fuel-efficient

b)

More power at low speeds

c)

More environmentally friendly

d)

Higher thermal efficiency

e)

Does not require premix oil

29.

The working cycle of a 2-stroke engine consists of the steps?

a)

Suction and compression

b)

Power and exhaust

c)

Suction-compression and power-exhaust

d)

Ignition and cooling

e)

Power and fuel filling

30.

The additional component in a 2-stroke engine to lubricate the internal parts is?

a)

Premix oil

b)

Engine oil

c)

Brake fluid

d)

Chain lubricant

e)

Radiator water

31.

Exhaust gases in a 2-stroke engine exit through?

a)

Exhaust valve

b)

Exhaust port

c)

Automatic exhaust

d)

Top piston

e)

Compressor

32.

What happens if the premix oil in a 2-stroke engine runs out?

a)

The engine continues to run normally

b)

The engine cannot start

c)

The engine overheats and wears out quickly

d)

Fuel consumption increases

e)

The spark plug spark becomes unstable

33.

Why does a 2-stroke engine have a higher pollution level compared to a 4-stroke engine?

a)

Does not have a cooling system

b)

Burns premix oil with fuel

c)

Has less compression stroke efficiency

34.

Why does a 2-stroke engine have a higher pollution level compared to a 4-stroke engine?

a)

Does not have a cooling system

b)

Burns oil along with fuel

c)

Has a less efficient compression stroke

d)

Produces less power

e)

Does not use a carburetor

35.

What is the main purpose of direct fuel injection innovation in 2-stroke engines?

a)

Increase lubricant oil capacity

b)

Reduce exhaust emissions and fuel consumption

c)

Increase fuel tank capacity

d)

Speed up the combustion process without ignition

e)

Reduce engine noise

36.

One of the weaknesses of 2-stroke engines that has been addressed through modern innovation is...

a)

Slow cooling system

b)

Difficulty in producing high power

c)

Low fuel efficiency and high emissions

d)

Engine size is too large

e)

Complexity of internal components

37.

What is the goal of innovations in 4-stroke engines such as variable valve timing?

a)

Reduce lubricant oil usage

b)

Ensure perfect combustion at low and high RPM

c)

Speed up initial acceleration

d)

Minimize engine noise

e)

Reduce overall engine size

38.

What is the advantage of separate lubrication technology in 2-stroke engines?

a)

Reduce lubricant oil consumption and exhaust emissions

b)

Increase maximum engine RPM

c)

Make engine noise smoother

d)

Add engine power at high RPM

e)

Reduce fuel tank size

39.

One technology used in modern 4-stroke engines to improve fuel efficiency is...

a)

High resonance exhaust

b)

Electronic fuel injection (EFI)

c)

Cooling using water

d)

Use of lightweight metal

e)

Carburetor combustion system

40.

The innovation of valve placement in modern motorcycles aims to...

a)

Reduce overall engine weight

b)

Reduce fuel consumption

c)

Ease the engine maintenance process

d)

Increase combustion efficiency and engine performance

e)

Reduce engine vibration

41.

DOHC (Double Overhead Camshaft) technology allows motorcycles to have...

a)

One camshaft with two valves

b)

Two camshafts to drive more valves

c)

One exhaust valve and one intake valve

d)

Valve placement beside the cylinder

e)

A system without a camshaft

42.

The advantage of variable valve timing innovation is...

a)

Makes the engine easier to assemble

b)

Reduces vibration in the engine

c)

Reduces the number of engine components

d)

Eliminates the need for an ignition system

e)

Optimizes power across all engine RPM ranges

43.

In machines with SOHC (Single Overhead Camshaft) technology, the camshaft is located...

a)

Inside the engine crankcase

b)

At the top of the cylinder head

c)

Beside the piston

d)

Near the crankshaft

e)

Under the cylinder head

44.

Desmodromic Valve technology in motorcycles is used to...

a)

Regulate fuel combustion timing

b)

Provide variable ignition

c)

Reduce exhaust emissions

d)

Open and close valves mechanically without springs

e)

Facilitate airflow into the combustion chamber

45.

The innovation of valve placement that allows automatic timing of valve opening and closing is...

a)

DOHC

b)

SOHC

c)

VVT (Variable Valve Timing)

d)

OHV (Overhead Valve)

e)

OHC (Overhead Camshaft)

46.

What is the valve timing mechanism that allows automatic opening and closing of the valve?

a)

DOHC

b)

SOHC

c)

VVT (Variable Valve Timing)

d)

OHV (Overhead Valve)

e)

OHC (Overhead Camshaft)

47.

In the overhead valve (OVH) engine, the valves are operated using...

a)

Direct drive chain

b)

Pushrod

c)

Magnet and coil

d)

Pulley and belt

e)

Electronic actuator

48.

The innovation of four valves per cylinder in motorcycle engines provides benefits such as...

a)

Reducing engine noise

b)

Increasing air flow in and out

c)

Making the engine more fuel-efficient

d)

Easier engine maintenance

e)

Minimizing engine heat

49.

What is the main difference between DOHC and SOHC valve systems?

a)

DOHC has two camshafts, while SOHC has only one camshaft

b)

DOHC is more fuel-efficient than SOHC

c)

DOHC uses springs for valves, SOHC does not

d)

SOHC is only used in electric motors

e)

DOHC does not require an ignition system

50.

The valve technology innovation that helps reduce fuel consumption while increasing power efficiency is...

a)

DOHC

b)

SOHC

c)

OVH

d)

OHV

e)

DOHC VVT

51.

The compression ratio in motorcycles is...

a)

The ratio between the combustion chamber volume when the piston is at the bottom and at the top

b)

The ratio between engine power and torque

c)

The ratio between fuel and air in the carburetor

d)

The ratio between oil pressure and fuel pressure

e)

The ratio between fuel tank capacity and combustion chamber

52.

As the compression ratio in motorcycle engines increases, then...

a)

Combustion efficiency decreases

b)

The likelihood of knocking increases

c)

The power produced decreases

d)

The engine requires low-quality fuel

e)

The engine does not require additional cooling

53.

A motorcycle with a compression ratio of 10:1 requires fuel with a higher octane value...

a)

Lower

b)

Does not affect octane value

c)

Same as 8:1 motorcycle

d)

High

e)

High if the air temperature is low

54.

If the engine has a total cylinder volume of 250 cc and a combustion chamber volume of 25 cc, then the compression ratio is...

a)

9:1

b)

10:1

c)

11:1

d)

12:1

e)

15:1

55.

The effect of a compression ratio that is too high on motorcycle engines is...

a)

The engine becomes cooler

b)

The engine produces less power

c)

Knocking or detonation occurs in the engine

d)

The engine can use any type of fuel

e)

The engine will stop functioning

56.

Racing motorcycles usually use a higher compression ratio because...

a)

They require high power and efficiency

b)

They save fuel at high RPMs

c)

They reduce engine heat

d)

They make the engine more durable

e)

They reduce friction in the combustion chamber

57.

What happens if a high compression motorcycle uses low octane fuel?

a)

The engine will work more efficiently

b)

The engine will experience knocking

c)

The engine will produce less heat

d)

No effect because octane does not matter

e)

The engine is more durable

58.

The ideal compression ratio for daily motorcycles using premium fuel is...

a)

6:1

b)

8:1

c)

9:1

d)

10:1

e)

12:1

59.

The combustion chamber volume of a motorcycle engine is 30 cc, and the total cylinder volume is 300 cc. What is the compression ratio?

a)

8:1

b)

9:1

c)

10:1

d)

11:1

e)

12:1

60.

One way to increase the compression ratio of a motorcycle engine is...

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61.

What is the compression ratio if the total cylinder volume is 300 cc?

a)

8:1

b)

9:1

c)

10:1

d)

11:1

e)

12:1

62.

One way to increase the compression ratio of a motorcycle engine is...

a)

Replacing oil with low viscosity

b)

Increasing the combustion chamber volume

c)

Decreasing the combustion chamber volume

d)

Using low-quality fuel

e)

Reducing engine performance

63.

The working principle of a 4-stroke engine involves a cycle consisting of four steps. The following step is part of that cycle, EXCEPT:

a)

Intake stroke

b)

Compression stroke

c)

Power stroke

d)

Exhaust stroke

e)

Cooling stroke

64.

In the power stroke of a 4-stroke engine, energy is obtained from:

a)

The downward movement of the piston due to air intake

b)

The explosion of the fuel-air mixture

c)

The compression of the fuel-air mixture in the combustion chamber

d)

Air exiting through the exhaust valve

e)

The crankshaft rotation without combustion

65.

Explain the working principle of a 4-stroke motorcycle engine and list the steps in order!

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66.

What are the main components involved in the working cycle of a 4-stroke engine? Explain the function of each component!

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67.

Compare the advantages and disadvantages of a 4-stroke engine compared to a 2-stroke engine!

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68.

Why is a 4-stroke engine more efficient in fuel usage compared to a 2-stroke engine? Provide a technical explanation!

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69.

What is the role of the intake and exhaust valves in the working cycle of a 4-stroke engine? Explain how they work in each system!

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70.

List and explain the function of each system in the working cycle of a 4-stroke engine: intake, compression, power, and exhaust!

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71.

How does the ignition system work in a 4-stroke engine, and what are its main components? Explain in detail!

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72.

Explain the relationship between the compression system and the power efficiency produced in a 4-stroke engine!

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73.

What happens if one of the systems in a 4-stroke engine, for example, the exhaust system, does not function properly? Explain the impact on engine performance!

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74.

Explain the periodic maintenance process for a 4-stroke motorcycle engine to keep its performance optimal!

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75.

Explain the function of the main components in a motorcycle engine!

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76.

List and explain the main components of a motorcycle?

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77.

What is the function of the cylinder block in a motorcycle engine? Explain the role of the cylinder block in the working cycle of the engine.

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78.

How does the piston work in generating power in a motorcycle engine? Provide an explanation of the piston movement in a 4-stroke or 2-stroke cycle.

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79.

Explain the function of the cylinder head in a motorcycle engine! Describe this component and its duties in the engine.

4 lines
80.

What is the role of the carburetor or injection system in a motorcycle engine?

4 lines
81.

Explain how this component regulates the mixture of fuel and air.

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82.

List the function of the crankshaft in a motorcycle engine!

4 lines
83.

Provide an explanation of how the crankshaft converts linear motion into rotational motion.

4 lines
84.

Explain the role of the spark plug in the combustion process in a motorcycle engine! How does the spark plug affect engine efficiency?

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85.

What is the difference in function between the intake valve and the exhaust valve? Describe the role of these two valves in the motorcycle engine cycle.

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86.

Explain the function of the lubrication system in a motorcycle engine!

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87.

Explain why lubricants are very important for engine components!

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88.

How does the cooling system work in a motorcycle engine?

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89.

Explain the function of the cooling fins on a motorcycle!

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