exam 3 mod 4

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the primary purpose of selecting the 'P' position in an automatic gearbox?

To ensure the vehicle is secure when parked. (correct)

To allow the vehicle to move freely.

To facilitate towing the vehicle.

To engage the engine with the drive wheels.

What must be done before shifting the selector from 'P' to 'R'?

Move the car forward slightly.

Engage the handbrake.

Depress the footbrake. (correct)

Turn off the engine.

When is it appropriate to select the 'N' position?

When accelerating quickly to merge onto a highway.

When towing the vehicle after a breakdown. (correct)

During temporary stops in traffic.

When the vehicle is in motion.

What happens when you shift the selector to 'R' without applying the brakes?

The vehicle may roll backwards immediately. Signup and view all the answers

What is the function of 'D' in an automatic gearbox?

To enable the transmission to adjust automatically to driving conditions. Signup and view all the answers

How do modern automatic gearboxes respond to driving styles?

They can hold gears longer under aggressive acceleration. Signup and view all the answers

Which of these is a recommended safety practice before starting the engine?

Make sure the selector is in 'P' and the footbrake is depressed. Signup and view all the answers

What risk does leaving the selector in 'N' while the vehicle’s wheels are moving pose?

It may cause damage to the transmission system. Signup and view all the answers

What happens to the vehicle's gearbox when it stops while in 'Drive' mode?

The gearbox automatically selects first gear. Signup and view all the answers

In what situation is it appropriate to engage the reverse gear?

When the vehicle is stationary. Signup and view all the answers

Why is it advised against shifting the gear lever to 'Neutral' when stationary in traffic?

It leads to more wear on the gearbox. Signup and view all the answers

What is the primary purpose of keeping an automatic vehicle in 'Park' when not in use?

To prevent the vehicle from rolling away. Signup and view all the answers

What is indicated by the selector lever position 'N'?

No power flows from the engine to the wheels. Signup and view all the answers

For situations requiring additional control, what can be beneficial?

Selecting special vehicle programs. Signup and view all the answers

What is the potential hazard of mistakenly using the left foot on the footbrake in an automatic vehicle?

It could cause the vehicle to accelerate unexpectedly. Signup and view all the answers

Which statement about shifting gear in automatic vehicles is incorrect?

The selector lever should be shifted to 'Neutral' at stops. Signup and view all the answers

What must be done to prevent the vehicle from creeping when selector positions 'P' or 'N' are not selected?

Use the footbrake or handbrake. Signup and view all the answers

When coasting in an automatic vehicle, releasing the accelerator pedal will result in which of the following?

An increase in speed if going downhill. Signup and view all the answers

Which is the proper action when parked on a steep hill with an automatic gearbox?

Engage the handbrake and leave in 'N'. Signup and view all the answers

How does the rate of creep behave when the vehicle is on a downhill slope?

It varies and increases due to gravity. Signup and view all the answers

What does the term 'run on' refer to in the context of automatic vehicles?

The lack of effective deceleration when releasing the accelerator. Signup and view all the answers

In manual selection mode, how can an emergency response prevent loss of control?

By manually selecting appropriate gears. Signup and view all the answers

When is it necessary to avoid secondary braking in relation to gear selection?

When selecting a gear at higher speeds. Signup and view all the answers

What can a driver do to effectively manage the vehicle's behavior when approaching a steep hill in an automatic vehicle?

Use the footbrake to control the vehicle's descent. Signup and view all the answers

Study Notes

Automatic Gearbox Selector Positions

Park (P): Selected when the vehicle is parked, before the engine is switched off. Footbrake should be depressed when starting the engine to prevent the vehicle from rolling. Do not move the selector lever to 'P' while the vehicle is in motion.
Reverse (R): Usually located next to 'Park'. Footbrake should be depressed when moving from 'P' to 'R' or when moving from 'P' to R to get to another selector position. The vehicle may start to move backward immediately after being shifted to 'R'.
Neutral (N): No power is transmitted from the engine to the drive wheels. Used for towing after a breakdown or accident. Should not be selected for temporary stops in traffic. Consult the vehicle manual before towing, as some systems may be damaged when the lever is left in 'N' while the wheels are moving.
Drive (D): Regular operation mode for driving under normal conditions. The transmission automatically adjusts according to speed, engine loading, and accelerator position.
Manual selection (M): Many modern automatic gearboxes have manual selection. In these cases, the selector lever can remain in 'D' for ordinary driving. During response driving, or in situations where additional control is required, selecting a gear manually can be beneficial.

Automatic Gearbox Characteristics

Creep: When any selector position other than 'P' or 'N' is selected and the footbrake or handbrake is not applied, the vehicle will creep forward or backward at low speed, even without pressing the accelerator pedal.
Run on: When driving in 'D', releasing the accelerator pedal does not result in downshifting to a lower gear, and engine compression is not apparent. This is referred to as 'run-on' and provides a driving sensation similar to 'coasting'.
Downhill Driving: The combined effects of run-on and gravity can result in a progressive increase in speed when driving downhill. Steep downward slopes can produce a sensation of losing control as gravity takes over and speed rises sharply.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

This quiz covers the various positions of an automatic gearbox, including Park, Reverse, Neutral, and Drive. Understand the function and proper usage of each selector position to improve your driving skills and safety. Ideal for new drivers or anyone wanting to refresh their knowledge of automatic transmissions.