SS3 Second Term Auto Mechanic Past Questions and Answers (Objective and Theory)

Section A: Multiple Choice Questions (Second Term)

Question: What is the purpose of the radiator in a vehicle’s cooling system?

A) Battery cooling

B) Engine lubrication

C) Transmission control

D) Engine coolant circulation

Answer: D) Engine coolant circulation

Question: Which part of the suspension system is responsible for absorbing shocks and bumps?

A) Coil spring

B) Shock absorber

C) Control arm

D) Sway bar

Answer: B) Shock absorber

Question: What does OBD-II stand for in the context of automotive diagnostics?

A) Onboard Diagnostics II

B) Oil and Brake Diagnostic

C) Oxygen and Brake Distribution

D) Onboard Brake Disruption

Answer: A) Onboard Diagnostics II

Question: In a braking system, what is the purpose of the master cylinder?

A) Brake fluid storage

B) Brake pedal force amplification

C) Brake pad engagement

D) Brake rotor cooling

Answer: B) Brake pedal force amplification

Question: What is the function of a turbocharger in an internal combustion engine?

A) Exhaust noise reduction

B) Improved fuel efficiency

C) Increased air intake for combustion

D) Enhanced brake performance

Answer: C) Increased air intake for combustion

Section B: Theory Questions (Second Term)

Question: Explain the concept of ABS (Anti-Lock Braking System) and how it enhances vehicle safety.

Answer: ABS prevents wheel lock-up during braking, maintaining steering control. This enhances safety by allowing the driver to steer while braking, reducing the risk of skidding.

Question: Discuss the importance of wheel alignment in vehicle maintenance.

Answer: Proper wheel alignment ensures even tire wear, optimal handling, and improved fuel efficiency. It also contributes to vehicle stability and overall safety.

Question: Describe the role of a catalytic converter in reducing vehicle emissions and its impact on the environment.

Answer: A catalytic converter converts harmful gases into less harmful substances, reducing air pollution and minimizing the environmental impact of vehicle emissions.

Question: Differentiate between drum brakes and disc brakes, highlighting their advantages and disadvantages.

Answer: Drum brakes are cost-effective but less efficient in heat dissipation, while disc brakes offer better cooling and performance but can be more expensive to maintain.

Question: Explain the purpose of the transmission fluid in an automatic transmission system.

Answer: Transmission fluid lubricates, cools, and cleans the components of an automatic transmission, ensuring smooth operation and prolonging the lifespan of the transmission system.