What is a transformer and what are its applications?

A Transformer is an electrical device that is used to convert the electric voltage from smaller to larger quantities and vice versa. The listed below are its applications:

1. To match impedance
2. Rectifier
3. Voltage rectifier or stabilizer
4. Voltmeter or Ammeter applications
5. Step up or Step-Down Voltages
6. Isolation of electrical circuits

What are the basic tools used for the measurement of electrical parameters in an electrical circuit?

The list of measuring tools used for the measurement of electrical parameters are as below:

1. Ammeter
2. Voltmeter
3. Ohmmeter
4. Multi-meter
5. Power meter
6. Microwave meter
7. Cathode Ray Oscilloscope
8. Signal Generators and Analysers
9. Wattmeter
10. Sweep Generator

What are the different network terminologies used in building the electrical circuit?

The below terms are used along with the electrical circuits and its applications:

• Node
• Junction
• Loop
• Mesh
• Branch
• Linear and Non-Linear circuits
• Active and Passive networks

What is Electrical Engineering and explain its different applications?

Electrical Engineering is a branch of electrical systems and application of its related electrical systems with electromagnetic or electronic subsystems.

The different applications are as below:

• Diodes, Rectifiers, and Transformers
• Digital Circuits
• DC or AC Motors
• DC or AC Generators
• Electrical Power Systems
• Electrical Control Systems
• Instrumentation Systems
• Communication Systems
• Digital and Analog Electronics

Explain what rectifiers is and what are the types of rectifiers?

A rectifier is an electrical device that transforms A.C or alternating current into direct current (D.C), which flows in only one direction. The types of rectifiers are 

• Half wave rectifier: It uses one p-n junction 
• Full wave rectifier: It uses two p-n junction

Mention how NPN and PNP transistor works?

In a circuit when NPN is used, 

• No current flowing from A to D = No flow from X to Z
• Current flowing from A to D = Current allowed to flow from X to Z 

When PNP is used, 

• No current flowing from A to D = Current is allowed to flow from X to Z
• Current flowing from A to D = No current flow from X to Z 

Mention what are the types of semi-conductors?

There are two types of semi-conductors intrinsic and extrinsic.

Again in extrinsic semi-conductors you will have N-type semiconductors and P-type semiconductors.