Automobile Engineering Important Questions | Unit-wise R23 Exam Guide
Automobile Engineering is one of the most exciting branches of mechanical engineering. It focuses on the design, construction, operation, and maintenance of automobiles. From engines and transmissions to brakes and vehicle dynamics, Automobile Engineering connects theory with real-world applications. To help you prepare effectively for exams, interviews, and competitive tests, here is a crisp, unit-wise list of Automobile Engineering important questions.
Automobile Engineering Important Questions for R23 JNTU Students (Unit-Wise)
Unit 1: Vehicle Basics & Engine Fundamentals
Key Theory Questions
What is Automobile Engineering?
Explain the classification of automobiles.
What are the main components of an automobile?
Describe the working of a four-stroke petrol engine.
Describe the working of a four-stroke diesel engine.
What is engine displacement?
What is compression ratio?
Explain the difference between SI and CI engines.
What are the main engine performance parameters?
Explain turbocharging and its advantages.
What is supercharging?
Describe MPFI engines.
What are hybrid vehicle technologies?
What is electronic engine control?
What is scavenging?
What is an ignition system?
Explain the cooling system in automobiles.
Explain lubrication systems.
What is knocking in engines?
What is emission control?
What is BS6 technology?
Explain fuel injection systems.
What is ECU?
What is power-to-weight ratio?
What is idling speed?
Numerical Focus Question
Calculate compression ratio for given dimensions.
Determine engine power from torque and RPM.
Fuel consumption calculation.
Estimate engine displacement from bore & stroke.
Calculate volumetric efficiency.
Unit 2: Transmission Systems
Key Theory Questions
What is a transmission system?
Explain the function of a clutch.
Difference between single-plate and multi-plate clutches.
What is synchromesh gearbox?
Describe automatic transmission.
What is CVT?
Explain torque converter.
What are drive shafts?
What is differential?
Explain universal joints.
What is overdrive?
Describe belt drive in scooters.
What is gear ratio?
Explain transaxle.
What is gearbox oil?
Explain constant mesh gearbox.
What is AMT?
What is dual clutch transmission?
Describe FWD and RWD.
What is final drive?
What is limited slip differential?
Explain clutch-free gear shifting.
What is propeller shaft?
What is torque steer?
Describe hydrostatic transmission.
Numerical Focus Question
Calculate gear ratio.
Determine wheel torque.
Find vehicle speed for given RPM and gear ratio.
Calculate power transmission efficiency.
Find torque converter multiplication factor.
Unit 3: Vehicle Dynamics & Control
Key Theory Questions
What is vehicle dynamics?
Explain aerodynamic drag.
What is rolling resistance?
What is traction?
Explain braking distance.
What is ABS?
Explain ESP (Electronic Stability Program).
Describe understeer and oversteer.
What is wheel alignment?
What is camber angle?
Explain caster and toe.
Describe suspension systems.
What are springs used in automobiles?
What is damping?
Explain pitch, roll, and yaw.
What is anti-roll bar?
Explain tyre construction.
What is tyre pressure effect on handling?
Explain weight transfer during acceleration.
What is cornering force?
Describe brake fade.
What is traction control system?
What is regenerative braking?
What is creep in vehicles?
Describe hydroplaning.
Numerical Focus Question
Calculate aerodynamic drag.
Determine braking distance.
Calculate rolling resistance force.
Find cornering force.
Determine deceleration from braking data.
Unit 4: Automotive Electrical & Electronics
Key Theory Questions
What is the purpose of a battery?
Explain alternator working.
What is starter motor?
Describe automotive wiring.
What is CAN bus?
Explain sensors in automobiles.
What are actuators?
What is an oxygen sensor?
Explain knock sensor.
What is BCM?
What is telematics?
Describe ABS electronics.
What is vehicle ECU?
Explain immobilizer system.
What is adaptive cruise control?
Describe ADAS.
What is radar in automobiles?
Explain battery management in EVs.
What is alternator cut-out relay?
What is DC-DC converter?
Explain LED lighting system.
What is injector pulse width?
What is throttle position sensor?
Describe main automotive fuses.
Explain speedometer working.
Numerical Focus Question
Calculate battery capacity.
Find alternator output.
Determine power requirement for headlamps.
Compute sensor signal voltage.
Calculate electric motor torque for EV.
Preparation Tips for Automobile Engineering
Understand diagrams of engines, gearboxes, brakes, and suspension.
Practice numerical problems regularly.
Focus on real components by observing bikes/cars around you.
Learn modern tech: ABS, EBD, sensors, EV systems.
Practice previous question papers.
Watch animations to understand mechanisms clearly.
Conclusion
Automobile Engineering is a perfect blend of mechanics, electronics, and vehicle technology. Preparing unit-wise Automobile Engineering important questions helps you score higher and build strong fundamentals for industry roles. With clear concepts and continuous practice, you can master this subject effectively.
