List of top Questions asked in CBSE CLASS XII

Write one sentence of each type --- Statement, Question, Exclamatory, Order.

Write the steps to protect a spreadsheet with a password.

Mention general characteristics of DC shunt motor and its applications.

List the importance of positive thinking in life.

List some ways by which one can reduce the amount of waste generated.

Star delta motor starters are used for ________ motors.

Which transformer is known as a single winding transformer?

Speed of motor used in electric mixer has ________ RPM.

Stator of three-phase induction motor is made by

The efficiency of single-phase motor as compared to three-phase motor is:

In a series RLC circuit, R indicates:

Eddy current in dynamometer type wattmeter can be minimised by using ________ within the region of magnetic field. (Metallic parts Non-metallic parts)

Series testing leads are connected to the terminals of plug top of the water heater. The lamp is not glowing. This indicates ________. (Short circuit Open circuit)

Torque and armature current characteristics are known as ________ characteristics. (Electrical Mechanical)

The voltage transformer is also known as ________. (Air core transformer Potential transformer)

The speed of motor or blower of room cooler is controlled by ________. (Selector switch Toggle switch)

Universal motor works only with DC supply.

The electromagnet is the main component of driving system of energy meter.

Squirrel cage induction motor is cheaper than slip ring motor.

Capacitor is always connected in series with starting winding.

Three-phase induction motor works on the principle of ________. (Self-induction Mutual induction)

Switch on power supply while working with the transformer.

In DC motor, flux is directly proportional to armature current.

First aid for an electric shock victim is:

What is the other name for pressure type water heater?