List of top Questions asked in CBSE CLASS XII

Write a short note on safety shorting probe.
Define dynamic range of a loudspeaker.
Write two advantages and one disadvantage of CD/DVD player.
Draw a block diagram of a microwave oven.
Why is biasing required in magnetic tape system? Write its types.
What do you understand by loudspeaker enclosure?
Write some general causes of failure of TV receiver.
Write the features of a remote control.
“Stress is a natural response to challenges or demands.” Write any four ways to manage stress.
Which of the following devices can be used for microwave generation?
“Active listening is an art.” Give any four factors that affect active listening.
What types of data are used in a spreadsheet?
How can an entrepreneur develop decisiveness?
Write any four benefits of green jobs.
What is the main property of organic photoconductive material that is coated in the drum of a laser printer?
The tone ringer unit in telephone generates frequency in the ________ range.
________ separates video signal from composite signal.
There are ________ number of pins in RJ11 connector.
The mixer of a TV receiver is a/an ________ port device.
In DTMF, the circuit operates over the supply voltage range from
Which of the following is an impact printer?
What do you mean by playback?
Which of the following can be used for analog sound recording?
Frequency modulation is done in ________ section of the TV transmitter. (Audio/Video)
Write two key features of HDTV.