List of top Questions asked in CBSE CLASS XII

What is the use of induction-type energy meters?
Define frequency.
The upper bowl of electric mixer is made of which material?
Ram has feelings of emptiness and abandonment. Name the type of personality disorder he has.
Write the shortcut key which is used for ‘Select all’ option.
Write any two roles/functions of an entrepreneur.
Write the full form of RWHS.
One BHP is equal to:
How many contactors does a star-delta motor starter require?
The peak energy stored in an RLC circuit divided by the average energy dissipated in the circuit per radian at resonance is called:
The shape of a rotor is:
Write some general causes of failure of recorder/player.
With the help of a block diagram, explain the working principle of disc recording system.
Explain the working principle of microwave oven.
What are the precautions to be taken to prevent electric shock?
Explain working, merits, demerits and application of moving coil microphone.
What are the possible problems that can occur at different subsections of cable TV?
What is an adjective?
The type of personality disorder characterized by extreme professionalism, order and neatness is called
Write any two roles and functions of entrepreneurship.
Write any four steps that green jobs perform to reduce greenhouse gas emissions.
Explain the process of scrambling.
Write a short note on Tweeter.
What is the function of DC Biasing?
What are the faults which may occur in scanners?