A vehicle's powertrain is a system that propels the vehicle forward. It includes the engine, transmission, driveshaft, differential, axles, and suspension. The powertrain creates power from the engine and delivers it to the wheels. 

The powertrain is the musculature system of the vehicle, while the chassis is the skeleton. The powertrain converts the engine's power into movement. 
 

Most vehicles have one of four drivetrain setups:
Front-wheel drive (FWD)
Rear-wheel drive (RWD)
All-wheel drive (AWD)
Four-wheel drive (4WD) 

Automobile Engineering Practice Test: Vehicles & Powertrain

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10 Questions

1. If F_rolling = 150 N, F_aerodynamic = 400 N, F_traction = 600 N, F_gradient = 0 N, what is the net force acting on the vehicle?

50 N750 N550 N100 N

2. Suppose the vehicle is running at a constant speed on the flat road with rolling resistance = 100 N and aerodynamic resistance = 100 N, what is the traction force required?

100 N0 N200 N50 N

3. What is running resistance of the vehicle?

Traction forceAerodynamic resistanceRolling resistanceSum of rolling and aerodynamic resistance

4. If the vehicle mass is 800 kg, what is the gradient force (approximate value in N) caused by the road gradient 10%?

800 N700 N500 N600 N

5. If the vehicle is running on the road having 10% gradient at a constant speed, then on flat road it will accelerate at approximately 1 m/s2 (All the parameters remain the same).

Don't knowMaybeFalseTrue

6. If the traction resistance is equal to the total running resistance, then which of the following will happen?

The vehicle will decelerateThe vehicle will accelerateThe vehicle will come to restThe vehicle will run at a constant velocity

7. What will happen if the vehicle is made 50% heavier, but all other parameters remain the same?

The running resistance will remain the sameThe running resistance will increaseThe aerodynamic resistance will increase by a factor of 1.5 squaredThe running resistance will decrease

8. Which one of the curves below represents a road gradient of 10%, if the mass of the vehicle is 1 ton?

BADC

9. What will happen if the traction force is negative?

The vehicle will decelerateThe vehicle will first accelerate and then decelerateThe vehicle will run at a constant speedThe vehicle will accelerate

10. Suppose the road gradient is G = 10%. What is the corresponding angle (approximate value in radians)?

5 rad0.1 rad10 rad1 rad