KWA REVISION - 28-05-2025

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Professional Development

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Professional Development

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WINCENTRE CLASSES

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9 Slides • 21 Questions

ENGINES & SAFETY

By WINCENTRE CP1

Multiple Choice

_____________ can be caught in belts, pulleys, and other moving parts of the machines.

Loose clothing

Long hair

Jewelry

All the above

Multiple Choice

Shop clothing is unsafe if it is...

loose

baggy

flammable

All of these

Multiple Choice

The student should notify the instructor immediately in case of...

Accident

Defective Equipment

Injury

All of these

Multiple Choice

What does PPE stand for?

Personal Protection Environment

Public Protection Equipment

Personal Protective Equipment

Protective Professional Equipment

Multiple Choice

What is first aid?

Completing a primary survey

The first help given to the victim of an accident

Assessing a victim's vital signs

Treating a victim for shock

Explanation Slide...

First aid is the immediate and temporary care given to the victim of an accident or sudden illness before professional medical help arrives.

Multiple Choice

During this cycle, the valves are closed, and the connecting rod pushes the piston UP, compressing the air/gas mixture.

The Intake Stroke

The Exhaust Stroke

The Compression Stroke

The Power Stroke

Multiple Choice

During this cycle, a valve opens as a connecting rod pulls the piston DOWN, drawing the air/gas mixture into the cylinder.

The Compression Stroke

The Power Stroke

The Exhaust Stroke

The Intake Stroke

Multiple Choice

What is the compression ratio range of CI engines?

6 to 10

10 to 14

16 to 20

8 to 12

Explanation Slide...

CI engines typically have a compression ratio in the range of 16 to 20, enabling auto-ignition.

Multiple Choice

What is the purpose of a flywheel in an engine?

Provides ignition

Converts fuel to heat

Smoothens power output

Increases noise

Explanation Slide...

Flywheel smoothens the power output from the engine by storing rotational energy.

Multiple Choice

What is the usual firing order of a six-cylinder inline IC engine?

1-3-4-2-5-6

1-5-3-6-2-4

1-6-5-4-2-3

1-4-3-2-6-5

Explanation Slide...

The standard firing order for inline 6-cylinder IC engines is 1-5-3-6-2-4.

Multiple Choice

What is the standard air-fuel ratio for petrol for complete combustion?

12.5:1

13.2:1

14.7:1

15.5:1

Explanation Slide...

The stoichiometric air-fuel ratio for petrol is 14.7:1 for complete combustion.

Multiple Choice

What does CRDI stand for in diesel engines?

Common Rotary Direct Injection

Common Rail Direct Injection

Central Rail Direct Ignition

Common Rapid Direct Ignition

Explanation Slide...

CRDI stands for Common Rail Direct Injection, a modern diesel injection system.

Multiple Choice

Which injection system is commonly used in petrol engines?

CRDI

Throttle Body Injection

Multi Point Fuel Injection

Port Injection

Explanation Slide...

MPFI (Multi Point Fuel Injection) is widely used in petrol engines.

Multiple Choice

Which stroke occurs when piston moves from TDC to BDC and draws air-fuel mixture?

Compression stroke

Exhaust stroke

Suction stroke

Power stroke

Multiple Choice

In a four stroke engine each cylinder has

One valve

Two valves

Four valves

Three valves

Explanation Slide...

Suction stroke involves drawing air-fuel mixture into the cylinder from TDC to BDC.

Multiple Choice

The term scavenging is generally associated with

2-stroke cycle engines

4-stroke cycle engines

aeroplane engines

6-stroke cycle engines

Multiple Choice

Two stroke engine has ….. ports

2 or 4

Multiple Choice

What is the name of this part?

Piston

Connecting Rod

Camshaft

Sway Bar Link

Multiple Choice

What is the name of this part?

Spark Plug

Ignition Coil

Spark Arrestor

Glow Plug

Multiple Choice

What is the name of this part?

Mini Piston

Camshaft

Valve

Main Cap

Multiple Choice

What is the name of this part?

Engine Block

Cylinder Head

Oil Pan

Sump

ENGINES & SAFETY

By WINCENTRE CP1

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