List of top Electrical Technology Questions asked in CBSE Class Twelve Board Exam

Explain the working principle of three-phase induction motor with its advantages.

Draw a diagram showing resistance in an AC circuit and the voltage and current waveform.

Explain the construction and working principle of a room cooler. Draw a diagram of internal structure of a room cooler.

Why is starter necessary in DC motor? Explain its working in brief.

With the help of diagram, explain the working principle of capacitor start motor.

What are the advantages and disadvantages of Dynamometer wattmeter? Write the different types of Dynamometer wattmeters.

With the help of diagram, explain basic construction and working principle of a transformer.

With the help of a diagram, explain the working of a universal motor.

What can we do to help prevent manual handling injuries in the workplace?

List out any four steps of Active listening.

Write the main components of immersion heater.

Self-motivation is significant in building one’s personality. Comment.

Explain the characteristics and applications of DC compound motor.

What are the possible faults in electric mixer? How are they removed?

Write the safety measure precautions of a transformer from the operational point of view.

Write down the steps for entering a text box in the slide.

Briefly explain the importance of green jobs in different sectors of the economy.

What are the barriers faced by an individual in becoming an effective entrepreneur?

Universal motor is used in .

The losses in an ideal transformer will be:

What is the function of Diode in a digital multimeter?

The advantage of three-phase induction motor is:

The electrolytic capacitor used in a capacitor start motor is a short duty type and guaranteed for operations per hour.

What is CPR in first aid?

When using electricity in a damp location must be used. (Insulation fault indicator/Ground fault circuit interrupter)