Important Technical Questions for ESE EE Interview

By BYJU'S Exam Prep

Updated on: September 25th, 2023

UPSC ESE Mains Exam 2023 results have been announced on the official website. UPSC carried out the UPSC Engineering Services (Main) exam on June 25th, 2023. UPSC ESE Mains Exam 2023 results will be announced on the official website. Candidates who have successfully cleared the UPSC ESE Mains EE exam will directly be called for the personality test or interview round. Important technical questions for ESE EE interview will be very helpful for the preparation of the interview for the ESE mains EE exam. It is the most important part of the examination as it carries 200 marks and the final selection can vary with the marks of the interview.

The Union Public Commission holds the Engineering Services Examination (ESE) EE in three stages. The first papers are written examinations, whereas the Personality Test is a one-on-one round. Candidates qualifying for Prelims and Mains have to appear for the Interview round for final selection. Here we are providing important technical questions for ESE EE interview in preparation for the ESE 2023 interview exam.

Download GATE Syllabus for All Engineering Branches PDF

Important Technical Questions for ESE EE Interview: Overview

The Engineering Services Examination (ESE) is a highly competitive exam conducted by the Union Public Service Commission (UPSC) in India for the recruitment of engineers in various government departments. The ESE for Electrical Engineering (EE) comprises of a written examination followed by a personal interview. The important technical questions for ESE EE interview are crucial in determining the candidate’s proficiency in the subject. It is essential for candidates to have a thorough understanding of the fundamental concepts and practical applications of electrical engineering to perform well in the ESE EE interview.

Through IES, Electrical engineers can work under the Government of India in the following sectors:

  • Indian Railways,
  • Power Telecommunications,
  • Central Water Engineering,
  • Defence Service of Engineers,
  • Central Engineering services etc

Also, Check IES EE Syllabus

UPSC ESE Important Date 2023

Important dates for the ESE 2023 exam have been shared below, candidates must check the relevant dates for ESE 2023 exam.

Events Dates
ESE 2023 Prelims Exam 19th February 2023
ESE 2023 Prelims Result 3rd March 2023
ESE 2023 Mains Exam 25th June 2023
ESE 2023 Mains Result To be notified later
ESE 2023 Interview To be notified later
ESE 2023 Final Merit List To be notified later

ESE IES 2023 Interview

The interview is one of the most important parts of the ESE 2023 exam. The interview carries a weightage of 200 marks, So students should prepare hard for the ESE 2023 interview. In this article, we have shared important technical questions for ESE EE interview that will definitely be helpful for the preparation of the ESE interview. Here few points about the ESE interview exam have been shared below.

  • For the personality test, candidates are selected from the Mains exam equal to twice the number of vacancies.
  • The total marks available for the personality test will be 200, with no minimum passing score.
  • Leadership, initiative, intellectual curiosity, tact other social traits, mental and physical energy, practical application abilities, and character integrity will be evaluated as part of the personality test.

Also, Check IES ESE Electrical Engineering Revision Tips 2023

How to fill Detailed Application Form (DAF) for UPSC IES Interview?

DAF plays an important role in the ESE interview, so it should be filled out carefully. Before filling out the online Detailed Application Form, please read the following guidelines.

  • Candidates must complete and submit a detailed online application form
  • Candidates must verify that all columns are completed correctly. The Commission will not respond to any correspondence sent to it.
  • Online DAF has SIX modules as
    • Personal
    • Educational Information
    • Parental Information
    • Employment Information,
    • Upload documents
    • Final Submission
  • Candidates are required to fill all the modules completely before finally submitting the Form ONLINE, using the Final Submission Module.

Important Technical Questions for ESE EE Interview

Candidates preparing for the interview round can check some important guidelines and questions asked in the IES interview in the following article.

  • What is transformer efficiency?
  • Can you compare the HVDC system to the HVAC system?
  • Can you develop a motor drive for us?
  • Compare AC with DC in applications.
  • Compare between autotransformer & single phase transformer?
  • Compare between thermal power plant & hydropower plant?
  • Compare three single-phase transformers with a three-phase transformer.
  • Define the reciprocity theorem.
  • Define superposition & MPT theory.
  • Describe the process of lightning.
  • Difference between CFL &tube lights?
  • Difference between IGBT& GTO?
  • Difference between isolator and circuit breaker.
  • Difference between LCD & CRT?
  • Difference between LED and normal diode?
  • Difference between line commutation & load commutation?
  • Do you have any idea about the latest technology of IGBT-based drives used in Indian railways?
  • Draw the equivalent diagram of the transformer.
  • Explain the RLC filter.
  • Explain the speed control of the induction motor.
  • Explain the transients that occur in the power system.
  • Explain the working of the fan regulator.
  • Explain the working of a synchronous generator.
  • Explain the working of tunnel diodes.
  • For what value of the ratio, the arms ratio gives maximum Wheatstone bridge sensitivity?
  • Give examples of dependent & independent sources.
  • How a circuit is said to be linear?
  • How does a diesel engine work?
  • How does a railway collision device work?
  • How bourdon tube is used to measure pressure?
  • How do you check the conductivity of gases?
  • How do you define resistance & resistivity?
  • How do you design an anti-theft car system?
  • How do you select base values in the per-unit calculation?
  • How does a motor drive sometimes cause the failure of motor windings?
  • How does the microwave work?
  • How does the thyristor work?
  • How grounding is provided in METRO-rail?
  • How does an induction motor work?
  • How power flow control is maintained?
  • How do solar panels work?
  • How to double the productivity of a turbine?
  • How to measure the temperature of oil in the transformer?
  • How to reduce distribution losses?
  • How to reduce magnetizing current.
  • How to select a modern fan or pump?
  • How voltage is generated in a spark plug?
  • Ideal OP-AMP & its characteristics?
  • Is the battery used in mobile phones an active element?
  • Is a precise result guaranteed to be accurate?
  • Is two wattmeter method applicable for balanced as well as unbalanced loads?
  • Methods to improve the efficiency of a transformer?
  • On what factors power transfer capability of a transmission line depends?
  • Operating modes of 555 timers? explain anyone
  • Operation & its advantage of SF6 circuit breaker
  • Tell us about generator efficiency.
  • Tell us about methods of Transformer protection.
  • Tell us something about Hybrid cars.
  • Tell us something about maintenance
  • Tell us something about the PN junction diode & transistor.
  • Tell us something about wind/solar energy.
  • Type of insulation used in the motor?
  • what are copper losses?
  • What are the differences b/w independent & dependent sources?
  • What are the different types of faults in transmission lines?
  • What are the steps you will take before starting a generator?
  • What are the adjustments you will make for friction compensation in the energy meter?
  • What are the brushless alternators?
  • What are the constraints of electrical energy?
  • What are the different types of alternators?
  • What are the different types of cables & their specification used in electric power distribution?
  • What are the different types of insulation tests for a cable?
  • What are the different types of integrating instruments?
  • What are the different types of relays?
  • What are the different types of transducers?
  • What are the electrical aspects of generator design & Rotor design?
  • What is the equipment used in the switchyard?
  • What are the generating voltages?
  • What are the generators used for traction purposes?
  • What are the insulation classes?
  • What are the methods of alternator protection?
  • What are the methods of speed control of DC motors?
  • What are the problems encountered while measuring very low & very high resistances?
  • What are the protection zones of the distance protection scheme?
  • What is the specification of the 1200 KV line?
  • What are the tariff types in electric power distribution?
  • What are the types of amplifiers you learned?
  • What are the types of stability in power systems?
  • What are the uses of earthing switches?
  • What are the types of PCBs and their fabrication?
  • What are the types of rectifiers?
  • What charges the Earth?
  • What do you know about gas power stations?
  • What do you know about Voltmeter & Ammeter?
  • What do you mean by coupling capacitor?
  • What do you mean by a dry transformer and harmonic suppression?
  • What do you mean by the stability of a synchronous machine?
  • What do you understand by breaker lockout?
  • What do you understand by dielectric strength?
  • What do you understand by distance protection?
  • What do you understand by Energy auditing?
  • What do you understand by per unit impedance?
  • What do you understand by the rating AC in TON?
  • What do you understand by a stable system?
  • What is an active element?
  • What is an induction furnace?
  • What is armature reaction?
  • What is creeping in the energy meter?
  • What is the difference between lightning and surge arresters?
  • What is eddy current, and how does it affect transformer performance?
  • What is ESLR?
  • What is lap & wave winding?
  • What is magneto-striction?
  • What is op-amp?
  • What is Peltier& Thomson effect?
  • What is Phantom Loading?
  • What is phase error in a Potential transformer?
  • What is a Power swing?
  • What is reactive power?
  • What is resonance?
  • What is Scott’s connection in a 3-phase transformer?
  • What is SDH?
  • What is the sliding balance effect in ac bridge balance and how to rectify this problem?
  • What is stability?
  • What is a surge arrester?
  • what is an asynchronous condenser?
  • What is the advantage of electro-dynamo-type instruments?
  • What is the DC line voltage?
  • What is the dielectric strength?
  • What is the effect of armature reaction on generator field winding?
  • What is the effect of frequency & voltage variation on the losses of the Transformer?
  • What is the effect of turbine blade angle?
  • What is the importance of earthing in an electric circuit?
  • What is the importance of earthing instruments?
  • What is the importance of sub-stations in the power system?
  • What is the percentage efficiency of a thermal power plant?
  • What is the sensitivity of an instrument?
  • What is the significance of the air gap in the rotating machine?
  • What is the significance of load flows?
  • What is the significance of Surge impedance?
  • What type of relays and CBs will be used in the substation?
  • What do you know about base and peak load power plants?
  • What are the different types of winding in synchronous machines?
  • Which insulation is used in the electric cable?
  • Which motor do we use in paper industries?
  • Which one is a large signal and which one is small signal stability
  • Why control spring is not provided in the power factor meter?
  • Why double cage rotor is preferred over a wound rotor in an induction motor?
  • Why losses are more in Uttar Pradesh than in other states?
  • Why megger is used?
  • Why rotating disc of the energy meter is made of aluminum?
  • Why secondary of the Current transformer is never open-circuited?
  • Why silicon is used in the core of the transformer?
  • Why swamping resistance is made of manganin?
  • Why do we use stone on the railway track but not on the Metro rail track?
  • Write the equation of series resonance circuits.

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