List of top Questions asked in CBSE CLASS XII

Write any two disadvantages of power steering.
Write the working principle of air compressor.
What do you understand by “Decisiveness” as an exercise of entrepreneurial attitude?
Write the role of green jobs in limiting greenhouse emissions.
Name any three components of a Calc screen.
How can ‘living in present’ be a source of motivation and inspiration?
What do you understand by exclamatory sentence?
Any kind of substance released into the air from natural or human sources — discharge of gases, liquid droplets or solid particles, is called ............... .
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 ............... .
In mechanical shock absorbers, the friction action of metallic discs is utilized to control the spring action whereas in hydraulic shock absorber fluid it is used to ............... .
............... leaf spring refers to a semi-elliptical spring mounted in an inverted manner and has a saddle above, forming a bow and is attached parallel to the wheel axle.
In case of commercial licence renewal, one of the documents required is ............... from the transport authority.
In oscillation of sprung weight, ............... occurs by turning or driving the vehicle on a bumpy road, in which the springs on one side of the vehicle expand, while those on other side contract.
Independent suspension can overcome the difficulty in the rigid suspension by making the two front wheels ............... each other.