L2 Manual Gearbox Basics - Lesson

Multiple Choice

What is the main advantage of using a transverse gearbox in modern vehicles?

• It allows for more compact engine bays and efficient use of space.

• It increases the overall weight of the vehicle.

• It makes the vehicle slower.

• It eliminates the need for a differential.

Multiple Choice

Which of the following statements about longitudinal gearboxes is correct?

• They are commonly used in front engine/rear wheel drive vehicles like BMW and Mercedes.

• They run from side to side (East to West).

• They do not require a separate differential.

• They are mostly used in motorcycles.

Fill in the Blank

Torque is the tendency of a force to rotate an object about an axis, ___, or pivot.

Open Ended

Describe how a spanner produces torque when used to loosen or tighten a nut or bolt.

Multiple Select

Which of the following are true about power in automobiles?

• Power is often quoted as BHP.

• Power is the product of torque multiplied by speed of rotation.

• Power bands can surpass 14,000 rpm in some racing automobiles.

• Power is independent of torque.

Multiple Choice

What is the advantage of a modern, well-designed, multi-valve petrol engine in terms of power bands?

• It achieves a near-flat torque output over a wide RPM range.

• It only works efficiently at low RPM.

• It produces maximum torque at idle.

• It cannot be used for cruising.

Multiple Choice

According to Carroll Shelby's quote, what is the main difference between horsepower and torque in the context of cars and racing?

• Horsepower is more important for racing, while torque is for selling cars.

• Horsepower sells cars, while torque wins races.

• Torque is only important for trucks, not cars.

• Torque is more important for advertising than horsepower.

Open Ended

Explain the relationship between torque and power in an automobile engine.

Multiple Select

Which of the following statements are correct about petrol and diesel engines according to the slides?

• Petrol engines have a wide power band.

• Diesel engines have a wide power band.

• Gear ratios should be the same for petrol and diesel models.

• Gear ratios need to be different between petrol and diesel models.

Open Ended

Explain why diesel engines generate peak torque at lower RPM compared to petrol engines, based on the information provided.

Fill in the Blank

At low speeds, acceleration is limited by the inertia of vehicular gross mass, while at high speeds, the dominant barrier is ___ resistance.

Multiple Choice

What is the main function of the selector forks inside a constant mesh gearbox?

• To move and lock a gear as selected

• To engage and disengage the gear teeth

• To rotate the output shaft

• To synchronize the speed of gears

Multiple Select

Which of the following are characteristics of a sliding mesh gearbox?

• Uses spur gears

• Normally 3 forward and 1 reverse gear ratios

• Commonly used in modern automobiles

• Gear wheels engage by sliding themselves

Multiple Select

Which of the following components are part of the synchronizer assembly in a constant mesh gearbox?

• Synchronizer hub

• Blocker ring

• Shift sleeve

• Output shaft

Multiple Choice

What is the primary action of the gear selector in a constant mesh gearbox?

• To lock a freely spinning gear to the shaft

• To engage and disengage gear teeth

• To change the direction of rotation

• To increase the speed of the output shaft

Multiple Choice

What is the main function of a synchronizer mechanism (synchromesh) in a modern dog clutch system?

• To match the speeds of the gear and selector before engagement

• To increase the speed of the gear

• To reduce the size of the gearbox

• To lubricate the gears

Multiple Select

Which of the following statements about the role of a synchromesh are correct?

• It acts as a brake to slow down spinning parts.

• It enables smooth selection of a gear.

• It increases the friction between the gear teeth permanently.

• It prevents the teeth from making contact until synchronization occurs.

Multiple Choice

In the gearbox assembly shown, which component is responsible for enabling smooth gear changes between the 1st, 2nd, 3rd, and 4th gears?

• Synchro Assemblies

• Dog Gear

• Selector Fork

• Reverse Gear

Multiple Choice

What is a key characteristic of a transverse gearbox?

• It is fitted running side to side and contains the differential inside.

• It is always mounted longitudinally in the vehicle.

• It does not contain a differential.

• It is only used in trucks.