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PCV CPC Case Study 22

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Alice, a bus driver in a busy city, must adapt to driving a new type of bus she hasn’t driven before. She needs to be particularly aware of the forces at work, such as friction, gravity, and inertia, especially in different road and weather conditions. Her primary concern is the safety and comfort of her passengers, requiring her to understand how these forces impact vehicle handling, braking, and acceleration.

There are 7 multiple choice questions in this PCV CPC case study. Read this carefully and ensure you fully understand the scenario before starting the test. You need to score 6 out of 7 to pass.

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1. How does friction affect driving, as Alice adapts to a new bus? Give one answer
A Braking/slowing down
B Only the speed of the vehicle
C The colour of the tyre
D The noise level of the vehicle
Correct Answer: A Braking/slowing down
Explanation: Friction affects the tyre's grip, essential for braking and slowing down.
2. What causes traction loss in vehicles, in Alice's experience? Give one answer
A Constant speed
B Light vehicle weight
C Regular maintenance
D Sudden acceleration or braking
Correct Answer: D Sudden acceleration or braking
Explanation: Sudden acceleration or braking can reduce grip, leading to loss of traction.
3. How does gravity impact uphill driving for Alice? Give one answer
A Decreases the vehicle's weight
B Improves fuel efficiency
C Reduces the need for steering
D Requires more engine power to move forward
Correct Answer: D Requires more engine power to move forward
Explanation: On an uphill gradient, more engine power is needed due to gravity's pull.
4. What happens with heavy braking while cornering, as Alice learns? Give one answer
A Components close to design limits
B Increased fuel efficiency
C More passenger comfort
D Reduced tyre wear
Correct Answer: A Components close to design limits
Explanation: Heavy braking while cornering strains components, nearing their design limits.
5. In vehicle dynamics, what does Alice understand about inertia? Give one answer
A Resistance to change in motion
B The energy produced by the engine
C The friction between tyres and road
D The speed of the vehicle
Correct Answer: A Resistance to change in motion
Explanation: Inertia is the resistance to change in a vehicle’s state of motion.
6. What is 'brake fade' and its effect, as known to Alice? Give one answer
A Brakes become more efficient
B Brakes lose effectiveness
C Increased fuel consumption
D Tyres wear out faster
Correct Answer: B Brakes lose effectiveness
Explanation: Brake fade results in brakes losing effectiveness due to overheating.
7. Why does Alice consider progressive braking beneficial in buses? Give one answer
A Enhanced engine power
B Faster journey times
C Improved safety and comfort
D Increased passenger capacity
Correct Answer: C Improved safety and comfort
Explanation: Progressive braking improves safety and comfort for passengers.