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Model Question Paper for Electrical Departmental Examination of Group B Officer of Indian Railways

By on March 22, 2014

I observed that there is a request for model question papers to help candidates appearing for Class II selection of Electrical Department of Indian Railways. There are four streams from which questions are set and Model questions of all streams has been prepared to help candidates to test themselves through model examination. Before you intend to look at the model question bank, there are certain guidelines which one should follow and prepare himself for attempting model examination. These are as follows:

Before attempting to look at the model question bank, one should understand its relevance:

  1. Model question paper will not help if you read for a fun or mental evaluation of whether you can attend the question or not.
  2. Prepare yourself for appearing in the model examination to test your competency to succeed
  3. Attempt only when you are ready to sit for three hours with comfortable table/chair, glass of water, pen, pencil and scale.
  4. Seek help of family members to create an environment of examination hall
  5. Remember it is not your knowledge but how you can write on the answer book to convince copy evaluator that your know the answer fully.
  6. Remember that you need minimum 60 marks to pass the paper and around 75 marks to make sure your selection.  You will not succeed even if you leave 20% of the question paper.
  7. For this, you should ensure attempting all question totalling 100 marks.
  8. Time management is very important. If you have to attempt 5 questions means 36 minutes/question.
  9. Model examination will help you to find how much of the each question you can write in 36 minutes. Learn the technique of reducing the content to accommodate within 36 minutes.
  10.  Don’t attempt more than maximum to be attempted
  11. You will get disheartened while attempting the first model examination but your confidence will improve with successive model examination.
  12. If you have read the above instructions and ready to follow then only attempt the model examination.
  13. You have to register yourself and request for model question paper. When you press ‘new’, you will get new model question paper different to what has already been downloaded by you.

Understanding Paper composition:

Vide Indian Railway Establishment Manual Chapter No. 204/2, no syllabus is prescribed for Group B examination for technical streams like electrical, mechanical, Civil, Signal and Telecommunication. It is stated that the paper shall be practical oriented. There is no definition what makes a paper to be classified as practical oriented. The preparation for the examination becomes difficult when no syllabus is prescribed. Beside this every department is having many streams (as given below) whereas his working is limited to one stream only. That makes competition further difficult.  Therefore, preparation for the examination has to be more focussed to attend in an intelligent manner. When it is tough for the candidate, it is equally difficult for the paper setter because

  1. There goes ample of preparation for conducting the examination and the question paper shall have reasonable standard to qualify minimum 50% more than the vacancies.
  2. If more number of candidates qualifies, the bottom those who does not qualify will have a heart burn
  3. If less number of candidates qualifies, there remain vacancies which the paper setter is always concerned.
  4. Therefore understanding this, you will get a reasonable number of questions to answer to get qualifying marks. The examination paper will never be so difficult that it may appear at first go. It is just simple preparation with focus that matters.

Setting your own Syllabus for the examination of AEE:

SSE/JE of electrical cadre shall have knowledge in the Technical of Railways in all stream, General Awareness, Simple Mathematics, Basic principle of Engineering, Establishment/Stores/Finance and Works Code. This makes the syllabus very wide and difficult for any one to adhere. Therefore, one shall prepare his own syllabus on which work. A guide on the subjects to develop confidence to appear for the model examination namely

  1. Technical Subjects: There are basically 4 streams for AEE examination and it may be difficult for him to possess knowledge in all the  stream when he has spent most of his time in one or at the most in two streams.  Choose minimum three from the  4 streams so that you get reasonable choice to answer adequate number of questions to secure minimum 60% marks. The four streams are  (a) Technical Subjects like (a)  Electrical Locomotive, Electrical Multiple Unit and Electrical Operation (b) Traction Distribution (c)           Train Lighting and Air Conditioning (d) Electrical General Services 
  2. General awareness: There is no limit to the questions in this category. But one can certainly lay down the limit based on his understanding and capacity.  One should read Simple general knowledge book and last six months of general knowledge magazine. Examiner generally avoids fill in the blank or one line answer because it may be difficult to evaluate based on model answer. Therefore, multiple choice questions are preferred and will be easy to answer based on your study with little remembrance. Therefore one should prepare himself  to answer multiple choice question for which reading a book/magazine two three times keeps you aware to answer the question.   One should read on Cities, River, Capital. Personalities, Books, Popular Films, Awards, Railway –Ministers/ Zonal HQ/PSUs/Important Statistics for IR yearbook 
  3. Simple mathematics of Class X standard: One should go through the simple mathematics of Class X standard along with Arithmetic of Class VIII standard involving questions on profit and loss, Principle and Interest, Area/Volume etc)
  4. Simple technical numerical problems of Diploma standard:
  5. Rajbhasha: One should always prepare for this subject even though it is an optional. The advantage is that syllabus is much less with limited questions and one can prepare well to score good marks.
  6. Establishment, Finance, Stores and  Works: The questions on these subjects are mostly practical and those which matters during day to day work. It is generally observed that in most of the cases the candidates are having more knowledge on the subject then is required and he spends more time in writing all that he knows. This is not correct. The answer shall be in phase with the marks assigned to it and time of not more than 6 minutes per 10 marks question.

Read more http://www.railelectrica.com/job-opportunities-in-rail-transport/group-b-services/

Model Question Bank:

Electric Locomotive, Electrical Multiple Unit and Electric Locomotive Operation

Model Question Bank Electric Locomotive

Main Questions Long

Sl.No. Question Marks
1 Draw a single line diagram of 25kV and 1500/750V DC system of a WAG7 class of locomotive with brief of minimum 5 equipments used in the circuit. 20
2 Draw a Tractive Effort vs Speed characteristics of a locomotive explaining the importance of each stage of the curve, adhesion, field weakening etc. 20
3 Draw a power circuit of WAG9 class of locomotive from current collection to traction motor with a brief description of its working. 20
4 Draw a auxiliary power circuit of WAP4 class of locomotive with brief description 20
5 Write down five main defects Loco pilots experience during train journey resulting tripping of locomotive and troubleshooting involved. 20
6 Write 10 important steps a loco pilot observes from the time he leaves his house and till sign off at destination. 20

Main Questions Short

Sl.No. Question Marks
1 What are the different protection relays used in WAP4 class of locomotive? 10
2 What are the advantages of regenerative breaking as compared to Dynamic rehostatic braking? 10
3 What are the causes of wheel wear of an electric locomotive and the action taken to reduce the wear and improving wheel life? 10
4 What are the different schedule inspection of an electric locomotive and measures adopted for its satisfactory execution? 10
5 What are important measurements during undergear examination and inspection in IC schedule? 10
6 Explain with neat diagram how DC is converted into three phase power? 10
7 What are the different electronic devices used in WAG9 class of locomotive and their function? 10
8 How online tap changer works? 10
9 Write down the procedure of joint checking of pressure trouble in a train with carriage staff. 10
10 What are the important checks during loco derailment? 10
11 What information can be derived from the data stores in ESMON of locomotive? 10
12 What are the important checks done during panto entanglement checking? 10
13 What is the method of classificatio0n of loco pilot and its importance? 10
14 What are the  winter precautions for electric locomotive maintenance and operation ? 10
15 What are the summer precaution for electric locomotive maintenance and operation? 10
16 What are the safety checks of electric locomotive?


Questions of Comparison

Sl.No. Question Marks
1 SIV vs Arno 5
2 WAG7 Vs WAG9 locomotive 5
3 Three phase Traction Motor Vs DC Series Traction Motor 5
4 Axle hung and nose suspended Motor vs fully suspended Motor 5
5 Schedule inspections of WAG7 vs WAG9 class of locomotive 5
6 Inspection vs Overhaul 5
7 GTO vs IGBT 5
8 EMU vs MEMU 5
9 MEMU Vs Conventional Passenger Train 5

Questions of Short Notes

Sl.No. Question Marks
1 Micro-processor control of electric Locomotive 5
2 Vigilance Control Device 5
3 Electron Beam Irradiated Cable 5
4 Pantograph 5
5 VCB 5
6 Loco Transformer 5
7 IGBT 5
8 4Q inverter Converter 5
9 Wheel Defects 5
10 What do you understand by Primary and Secondary Suspension system of Locomotive? 5
11 Oil Free compressor 5
12 FOIS 5
13 COIS 5
14 Computerised Charting 5
15 Responsibility and function of Crew controller 5
16 Specific Energy Consumption 5
17 System of calculation of Overtime of Loco Pilot 5
18 Reliability of EMU train 5


Traction Distribution

Model Question Bank Traction Distribution

Main Questions Long

Sl.No. Question Marks
1 Draw a single line diagram of Sectioning Diagram of OHE for double line for most optimum fault isolation arrangement. 20
2 What are the important points noted during foot by foot survey of any Railway electrification work? 20
3 Draw a single line diagram of typical 132/25kV Traction substation and a short write up on any five items of the substation. 20
4 What are different types of ATD, its importance in OHE design and adjustments? 20
5 Prepare an estimate for electrification of a single line siding of 4 Km taking off from double line station. 20

Main Questions Short

Sl.No. Question Marks
1 What are the types of works involved in any Railway Electrification work and departments involved in execution? 10
2 What are different steps involved from initiation to final completion of Railway electrification work? 10
3 Write main principles  of Sectioning Arrangements in any Electrification work 10
4 Voltage regulation in OHE and ways to improve it 10
5 What to you understand by OHE impedance and its relevance in protection design? 10
6 What do you understand by Traction Transformer its important parameters and electrical protection? 10
7 Why neutral section is provided in OHE design and its different types? 10
8 What are different causes of low power factor in Traction System and ways to improve it 10
9 What are different interference problem due to 25kV traction system and how it is handled? 10
10 What are codes of practice for earthing of power supply installations for 25kV traction System? 10
11 What are the features and parts of Cantilever assembly 10
12 What are different types and features of OHE mast foundation? 10
13 What do you understand by ATD and its importance in current collection? 10
14 What are the important aspects of traction tariff? 10
15 Write important features of energy conservation in 25kV traction system 10
16 Derive a formula for working out the kVAR of capacitor bank for improving the power factor of P kW power from pF1 to pF2. 10
17 Different types of Masts and Portal with reasons for their usage in a particular location 10
18 What are different measurements taken during of OHE in AOH and POH? 10
19 10

 Questions of Comparison

Sl.No. Question Marks
1 Electric Versus Diesel Traction 5
2 Dynamic Power factor compensation versus Fixed Capacitor Compensation 5
3 Regulated versus Un-regulated OHE 5
4 AC versus DC Traction System 5
5 25kV vs 2x25kV Traction System 5

Questions of Short Notes

Sl.No. Question Marks
1 Guidance principle for Location of Traction Substation 5
2 Sectioning Post (SP) 5
3 Sub-Sectioning and Paralleling Post (SSP) 5
4 ODC 5
5 Span Length 5
6 Neutral Section 5
7 Auxiliary Power Supply System 5
8 Scott connected Traction Transformer 5
9 2x25kV Power Supply System 5
10 Mho Relay 5
11 SCADA 5
12 Earthing and Bonding 5
13 Tramway type OHE 5
14 Numbering system of OHE mast 5
15 Types of Foundation 5
16  Guidelines for electrification of petroleum sidings/loop 5

Train Lighting and Air Conditioning

Model Question Bank Train Lighting and Air Conditioning

Main Questions Long

Sl.No. Question Marks
1 Draw a sketch of power supply system of Air Conditioned 2 tier coach with a brief write up on any five equipment of the system 20
2 Explain the working of 25 kV inverter used for power supply system in a Air Conditioned Coach 20
3 What are the different protection used in AC coach for electrical and  refrigeration cycle? 20
4 Explain the refrigeration cycle with TS diagram. How refrigeration cycle is used for heating purpose during winter? 20
5 What are the causes of fire and smoke in TL/AC coach and different action plan to prevent it? 20

Main Questions Short

Sl.No. Question Marks
1 How negative bonding is checked in a TL coach and its importance in fire prevention? 10

 Questions of Comparison

Sl.No. Question Marks
1 EOG vs SG 5
2 HOG Vs EOG 5
3 Brushless Alternator Vs Permanent magnet Alternator 5
4 ERRU vs RRU 5
5 RMPU vs Underslung mounted AC Coach 5

Questions of Short Notes

Sl.No. Question Marks
1 BLDC Fan 5
2 RMPU 5
3 Brushless Alternator 5
4 Maintenance Free Lead Acid battery 5
5 Scroll Compressor 5
6 Protection system for Compressor in RMPU 5
7 Microprocessor control for AC coach 5
8 Duties of AC coach in-charge and attendant 5
9 Summer Preparedness for Reliable AC services 5
10 Causes of belt missing and action plan to prevent it 5
11 Energy Conservation measures in Trail Lighting and Air Conditioning system of Indian Railway Coaches 5


Electrical General Services

Model Question Bank General Services

Main Questions

Sl.No. Question Marks
1 What are different types of secondary distribution systems? Explain with advantages and application.  10
2  What are the factors to be considered while designing a General Power supply distribution transformer?  10
3  What are different types of conductors used for overhead lines and specific features of each?  10
4  What are different types of cables used in electrical power distribution sytem and specific features of each?  10
5 Design a 33kV/440V Electric power distribution Sub-station for a important Railway Station having a load of about 400kVA.  20
6 What do you understand by earthing and  type of earthing?  10
7 How the earth resistance is measured and measures to reduce it?  10
8 What are important features of electrical tariff and measures taken to reduce its implications?  10
9 What do you understand by UPS are what are different topologies with implications?  10
10 What are the different types of lamps used for illumination and explain the comparison with lux level, energy efficiency, CRI and cost?  20
11 What is submersible pump and its protection for its reliable working?  10
12 What precautions are taken at the time of installation of split air conditioner?  10
13 Explain refrigeration cycle and how it can be used for heating?  10

 Questions of Comparison

Sl.No. Question Marks
1 Underground Cable vs Overhead Line  5
2 Touch Vs Step Potential
4 Window Air Conditioner Vs Split Air Conditioner

Questions of Short Notes

Sl.No. Question Marks
1 Specification of distribution voltage with permissible tolerance as per IE rules  5
2 Micro-processor based water supply arrangement for a Coaching maintenance depot  5
3 Polar Diagram  5
4 LED and its application  5
5 Energy Saver for a Lathe Machine


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There Are 19 Comments


    Thank you sir, for your valuable direction.I have gone through the syllabus of APO Exam repeatedly aand also collected 3 questionpapers of last exams from my collegues. But the pattern of question does not match directly with syllabus.As a new candidate how can I evaluate my answers? and how can I collect more sample questions? Rest Ishall try hard for success.

    • Mahesh Kumar Jain says:

      Pattern of question will never match, therefore, if you intending to prepare as per the trend of examination paper, you will not succeed. Setting a paper and its evaluation is the key to success where your mind will work in the most productive and in multi-direction. When you check your own copy as a examiner, you understand how a mistake is committed and to be taken care of. While writing mock drill paper, you train your self towards the time management of three hours, content optimization to get full marks, speed management of writing, paragraphing. Begin your journey and will learn to evaluate the answer copy of yours also.

  2. shalendra singh says:

    indian railway dipartmantly exam solved peper 2014

    • Mahesh Kumar Jain says:

      You will not be able to find departmental solved paper on any of the website. During your training in Railways, you must have collected notes and books. Make use of the same.

  3. SUBA PRIYANKA.B says:

    valuable information

  4. abhik says:

    Please provide model question papers for mechanical department

    Thank you

    • Mahesh Kumar Jain says:

      I don’t have any model question paper. What I have suggested is to make your own question paper and think you are the examiner. Make 5 such question papers. Attempt these question papers in a examination like environment after three months. This is the best and sure shot way to succeed. Check you much marks you score as per evaluation. If you score more than 75% in both the papers, there are fare chances of selection.


    I want to apply for sse post in compensastion ground.my qualification is mtech in electronics.pls tell me the procedure and syllabus and pass mark

  6. suryateja saragadam says:

    i have completed my Btech, and applied for compensation ground ,what job can i expect and how will be the exam?

  7. Smeet says:

    This is very useful information.

  8. surya das says:


  9. P. M. Gawande says:

    Sample questions paper of LDCE AEE Examination

  10. Gopal Chandra Sahoo says:

    Sir, I’m working as loco pilot in East Coast Railway & have completed 5yrs. service in 4200grade pay. I’m eligible for Asst. Elect. Engineer exam. Is there any coaching facility available? How can I prepare to get the success?

    • Mahesh Kumar Jain says:

      No coaching facility available. You have to make your own efforts to compile the technical matter as per the syllabus.

  11. Moumita Pal says:

    I am looking for departmental exam question paper for tech 3 mechanical in Kanchrapara railway?

    • Mahesh Kumar Jain says:

      You will not be able to get anywhere such question papers. You have to contact the persons who have appeared in these examinations earlier.

  12. Partha Pratim Sengupta says: