Introduction to Transformers

The video explains the function and structure of transformers, which are devices used to adjust the voltage of alternating current. Transformers are found on telephone poles and in electronic devices. Step-down transformers reduce high voltage to a safer level for home use, while step-up transformers increase voltage for devices like televisions. The video details the components of transformers, including primary and secondary coils, and explains electromagnetic induction.

What is the primary function of a transformer?

• To store electrical energy

• To convert alternating current to direct current

• To increase or decrease the voltage of an alternating current

• To generate electricity

Why is a step-down transformer used on telephone poles?

• To increase the voltage for industrial use

• To store energy for later use

• To reduce high voltage to a safer level for home appliances

• To convert electricity to solar power

What are the two main components of a transformer?

• Capacitor and resistor

• Battery and switch

• Primary coil and secondary coil

• Diode and transistor

How does a step-up transformer differ from a step-down transformer?

• It stores energy for later use

• It decreases voltage instead of increasing it

• It converts AC to DC

• It increases voltage instead of decreasing it

In what device is a step-up transformer commonly used?

• Television set

• Refrigerator

• Washing machine

• Microwave oven