What do you understand by the term electrical engineering? What are its different applications?

Electrical and Electronic Engineering - Interview Questions

Electrical engineering is a field of engineering that generally deals with the study and application of electricity, electronics, and electromagnetism.

* Electrical engineering generally deals with high voltage, especially AC above the range of 110 or 220V.

* Electrical machines, components, and devices use alternating current (AC) / Voltages and tend to be larger and require 230V (In UK) and 110V (In the US) single-phase ac voltages.

* In industries and power stations, it may require up to 11kV, and for transmission, it may be higher than 400kV.

The different applications of electrical engineering are as follows :

* Electrical Power Systems
* Electrical Control Systems
* Diodes, Rectifiers, and Transformers
* Digital Circuits
* AC and DC Motors
* AC and DC Generators
* Instrumentation Systems
* Communication Systems
* Digital and Analog Electronics etc.

Recently Updated Interview Questions in Electrical and Electronic Engineering

What are the advantages of VSCF wind electrical system?

Advantages of VSCF wind electrical system are :

* No complex pitch changing mechanism is needed.
* Aero turbine always keeps going at maximum efficiency point.
* Extra energy in the high wind speed region of the speed – duration curve can be extracted
* Significant reduction in aerodynamic stresses, which are associated with constant – speed operation.

Why electricity in India is in the multiples of 11 like 11kv, 22kv, 33kv?

Transformer Induced voltage equation contains 4.44 factor.

E=4.44*f*T*phi
E -Induced emf per phase
T -number of turns
f -frequency
phi -maximum flux per pole
From the equation we see that E is proportional to 4.4 and it is in turn multiple of 11.

So always transmission voltage is multiple of 11