Transformer

The video tutorial explains the role of transformers in power grids, focusing on how they adjust voltage levels for efficient electricity transmission and safe usage. It covers the basic components of transformers, including the primary and secondary coils, and the role of the magnetic field in inducing voltage. The tutorial also discusses the design features that enhance transformer efficiency, such as the use of a soft iron core and the difference in coil turns between step up and step down transformers.

What is the primary purpose of using transformers in power grids?

• To store electricity for later use

• To increase the speed of electricity

• To efficiently deliver electricity over long distances

• To convert electricity into mechanical energy

How do step-up transformers affect voltage?

• They convert AC to DC

• They increase the voltage for long-distance transmission

• They maintain the same voltage level

• They decrease the voltage for safe home use

What happens when alternating current flows through the primary coil of a transformer?

• It creates a static magnetic field

• It induces a voltage in the secondary coil

• It stops the flow of electricity

• It converts the current to direct current

Why do transformers typically have a soft iron core?

• To convert AC to DC

• To increase the magnetic field strength

• To decrease the production cost

• To reduce the weight of the transformer

What is the difference in coil turns between step-up and step-down transformers?

• Step-up transformers have fewer turns in the secondary coil

• Step-down transformers have more turns in the secondary coil

• Step-up transformers have more turns in the secondary coil

• Both have the same number of turns