List of top Automotive Questions asked in CBSE CLASS XII

Write the various purposes of Automotive Electrical System.
Ankita/Ankit is working as a mechanic in an automobile workshop. She/He receives a car for repair with the defect, transmission is noisy in neutral speed position. Advise her/him to check for various probable causes of defect with their remedies.
With the help of a proper layout, show the classification of suspension springs. Explain torsion bar spring.
Explain the working principle of hydraulic power steering in neutral (straight-ahead) position and while turning.
Write the names of the various main parts of a commonly used car washer.
Name the various advanced technologies adopted in emission control.
What do you understand by fuel delivery system/control in electronic fuel injection?
What do you understand by differential?
Write the utility of universal joint in transmission.
Name the various types of hydraulic shock absorbers.
Write any two disadvantages of power steering.
Write the working principle of air compressor.
How can ‘living in present’ be a source of motivation and inspiration?
Multi Point Fuel Injection uses several injectors, normally respective to number of engine cylinders and placed at the ............... of each cylinder.
In the operation of voltage regulator, as the generator speed rises, the current flowing through the shunt coil of regulator ............... .
The speed of the generator at which its output voltage just rises above the voltage of the battery being charged is called ............... speed.
The DC charging system offers ............... voltage output, particularly at low speeds or idle speeds of engine.
The function of engine speed sensor is to monitor engine speed, which is one of the factors used to calculate ............... .
Three quarter floating type of rear live axle is used in ............... vehicles.
In rear axle, the drive from the propeller shaft is transmitted via the crown wheel and pinion, to both rear wheels by means of the ............... .
The three way catalytic converter is the most ideal type of catalytic converter since it can convert not only CO and HC, but also ............... into non-polluting substances.
A constant velocity joint, consisting of a housing, a spider and a set of three rollers is called ............... joint.
Cross or spider type of variable velocity joints, consist of two Y-shaped yokes, connected at right angles to each other by means of a ............... .
The propeller shaft is normally made by seamless steel tubing method with ............... welded to both ends of the shaft.
In MacPherson strut suspension, the upper end of the shock absorber and the top of the coil spring are made to sit on the seat provided on the ............... .