Electrical Engineering Interview Questions

Electrical Engineering Interview Questions

 Introduction to Electrical Engineering:

Electrical and Electronics Engineering is a field of engineering that generally deals with the study and application of electricity, electronics and electromagnetism. Electrical Electronics Engineering (EEE) first became an identifiable occupation in the late nineteenth century after commercialization of the electric telegraph and electrical power supply. It now covers a range of subtopics including power, electronics, control systems, signal processing and telecommunications. Electrical and electronics engineering is an engineering discipline where non-linear and active electrical components such as electron tubes, and semiconductor devices, especially transistors, diodes and integrated circuits, are utilized to design electronic circuits, devices and systems, typically also including passive electrical components and based on printed circuit boards.

Electrical and electronics engineering is a professional engineering discipline that generally deals with the study and application of electricity, electronics, and electromagnetism. This field first became an identifiable occupation in the later half of the 19th century after commercialization of the electric telegraph, the telephone, and electric power distribution and use. Subsequently, broadcasting and recording media made electronics part of daily life. The invention of the transistor, and later the integrated circuit, brought down the cost of electronics to the point they can be used in almost any household object.

Electrical engineering has now subdivided into a wide range of subfields including electronics, digital computers, computer engineering, power engineering, telecommunications, control systems, radio-frequency engineering, signal processing, instrumentation, and microelectronics. Many of these sub disciplines overlap with other engineering branches, spanning a huge number of specializations such as hardware engineering, power electronics, electromagnetics & waves, microwave engineering, nanotechnology, electrochemistry, renewable energies, mechatronics, electrical materials science, and much more. See glossary of electrical and electronics engineering.

Electrical engineers design, develop, test, and supervise the manufacturing of electrical equipment, such as electric motors, radar and navigation systems, communications systems, or power generation equipment. Electrical engineers also design the electrical systems of automobiles and aircraft.

Electronics engineers design and develop electronic equipment, such as broadcast and communications systems, from portable music players to global positioning systems (GPS). Many also work in areas closely related to computer hardware. 

What are the responsibilities of electrical and electronics engineers?

What is electronics?

What is the difference between electronic and electrical?

Explain advantages of storage batteries?

Why back EMF used for a DC motor? Highlight its significance?

What is a System?

What is Control System?

What are different types of Control Systems?

What is latching current?

What is holding current?

What is the difference between holding current and latching current?

What is meant by knee point voltage?

What is the difference between generator and alternator?

Difference between a four point starter and three point starter?

Why the capacitors work on ac only?

How many types of Colling system it transformers?

What is the principle of motor?

What is 2 phase motors?

What is MARX Circuit?

Why star delta starter is preferred with induction motor?

How can you relate power engineering with electrical engineering?

What is encoder, how it function?

Why Human body feel Electric shock? And in an Electric train during running, we did not feel any Shock? Why?

What happen if we give 220 volts dc supply to d bulb r tube light?

Define the term Capacitance and Inductance?

What are the transformer losses?

What is the full form of KVAR?

Mention what are the different colors on wires indicates?

Mention how NPN and PNP transistor works?

Mention what is the role of transistor in Circuit?

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

What is slip in an induction motor?

What happens when two positively charged material is placed together?

What is referred to the electron in the outer orbit?

Why AC systems are preferred over DC systems?

What are the various kind of cables used for transmission?

What is the difference between Analogue and Digital circuit?

What is the difference between MCB & MCCB, where it can be used?

Where the lighting arrestor should be placed in distribution lines?

what is Zener diode?

Why back EMF used for a dc motor? Highlight its significance?

Why star delta starter is preferred with induction motor?

Define IDMT relay?

What are the advantages of speed control using thyristor?

What are the advantages of star-delta starter with induction motor?

Why Delta Star Transformers are used for Lighting Loads?

What is rated speed?

If one lamp connects between two phases it will glow or not?

Two bulbs of 100w and 40w respectively connected in series across a 230v supply which bulb will glow bright and why?

Why temperature rise is conducted in bus bars and isolators?

What is the difference between synchronous generator & asynchronous generator?

What is Automatic Voltage regulator (AVR)?

What is the difference between earth resistance and earth electrode resistance?

What is the significance of vector grouping in us Transformers?

Explain what is used of lockout relay in html voltage?

Mention the methods for starting an induction motor?

What is the power factor of an alternator at no load?

How to determine the capacitor tolerance codes?

What is laser diodes?

What is meant by reverse polarity and how it can be fixed?

What are the advantage of freewheeling diode in a Full Wave rectifier?

What is the power factor of an alternator at no load?

What is the function of anti-pumping in circuit breaker?

What is stepper motor? What is its uses?

Which device the load current will be maximum? And why?

What is SF6 Circuit Breaker?

State thevenin's theorem?

State Norton’s Theorem?

State Maximum power transfer theorem?

Explain different types of D.C motors?

Explain the terms real power, apparent power and reactive power for ac circuits and also the units used?

Explain thin film resistors and wire-wound resistors?

What is the comparison between JFET’s and MOSFET’s?

Explain forward resistance, static resistance and dynamic resistance of a P-n junction diode?

What is working principle of operation of a single-phase transformer?