October 24, 2013

SSB Interview Technical Questions for Engineering Students


During your SSB personal interview, you could face anything under the sun. But normally you face a question and answer session with the interviewing officer. Most of the aspirants are asking about the type of questions they will face during their personal interview, today we are writing about questions which an engineering graduate may face during his/her SSB personal interview.


There are various technical entries for an engineering students, such as UES, TGC and SSC-tech for Indian Army, AFCAT for Indian Air Force and few direct entries for Indian Navy. If you are going for SSB through a technical entry, then you must be aware of some basic concepts from the subjects you have studied or studying.

SSB Interview Technical Questions for Engineering Students


SSB Interview Engineering Branch  

  • Civil Engineering
  • Mechanical Engineering
  • Electrical/Electrical & Electronics
  • Automobile/Workshop Technology
  • Aeronautical/Aviation/Aerospace/Ballistics/Avionics
  • Computer Sc & Engg/Computer Technology/Info Tech / M.Sc Computer Sc
  • Electronics & Telecom/Telecommunication/Electronics & Comn/Satellite Communication
  • Electronics/Opto Electronics/Fibre Optics/Micro Electronics & Microwave
  • Electronics & Instrumentation/Instrumentation
  • Architecture/Building Construction Technology
  • Food Tech/Bio Tech/Bio Medical Engg
  • Chemical Engineering 
  • Metallurgy & Explosives/Metallurgical Engineering
  • Industrial/Manufacturing Engg/Industrial Engg & Mgt/Production

SSB Questions from Civil Engineering

  1. What are the steps involved in the concreting process, explain?
  2. Describe briefly the various methods of concrete curing.
  3. What do you understand by “preset” during the installation process of bridge bearings?
  4. Why are steel plates inserted inside bearings in elastomeric bearings?
  5. What reinforcements are used in the process of prestressing?
  6. In the design of bridge arguments what considerations should be made to select the orientation of the wing walls?
  7. In case if concrete box girder bridges how is the number of cells determined?
  8. Under what circumstances should pot bearings be used instead of elastomeric bearings?
  9. Why should pumping be not used in case of concreting works?
  10. Why should curing not be done by ponding and polythene sheets?
  11. What are the different type of slump test indications?
  12. Why is propping required for long structures once the formwork is removed?
  13. Explain the mechanism of cavitations in pipes and drains?
  14. For what purpose bedding is used under storm water drains, explain?
  15. Why are pull-out tests performed for soil nails?
  16. Describe briefly the advantages and disadvantages of using plastic and timber fenders?
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SSB Interview Questions for Mechanical Engineering

  1. What is the difference between Critical Speed and Whirling Speed?
  2. How a Diesel Engine Works as Generator?
  3. Explain Second Law of Thermodynamics?
  4. Compare Brayton Cycle and Otto Cycle?
  5. What is the purpose of Scrapper Ring?
  6. What is DTSI Technology?
  7. What is the importance of Thermodynamics?
  8. What is the difference between P11 and P12 Pipes?
  9. State difference between AnitiFriction Bearing and Journal Bearing?
  10. What are the Advantages and Disadvantages of using LPG in Car?
  11. What is the difference between Speed and Economic Speed?
  12. State all the laws of Thermodynamics?
  13. State the difference between Unilateral and Bilateral Tolerance?
  14. What is difference between Welding and Brazing?
  15. Which has more Efficiency Diesel Engine or Petrol Engine?
  16. Which is heavier 1kg Cotton or 1kg Iron?
  17. What is the difference between Sudden Force and Impact Force?
  18. How do you know air is fully saturated?
  19. What is Operating Pressure?
  20. What is Difference between stamina and strength?
  21. What is Hydrostatic System?
  22. What is meanst by One Tonn Air-Conditioner?
  23. State 1st Law of Thermodynamics?
  24. If you heat a steel pipe with the hole at center, how does heat affects the hole diameter?

SSB Interview Questions for Electrical Engineering

  • What is the “power factor”?
  • What is Current?
  • What is Ampere?
  • Could you measure current in parallel?
  • What is the difference between Voltage and Potential Difference.
  • Could you measure voltage in series?
  • State and Define Ohm's Law?
  • What is the function of Capacitor in electrical circuits? 
  • What is the function of Inductors in electrical circuits?
  • How does Tubelight works?
  • How does Ceiling fan works?
  • What is difference between UPS and Invertor ? 
  • What does the term “Voltage Regulation” means?
  • What is the difference between power and energy?
  • What is Kirchoff ’s Current Law (KCL)?
  • What is Superposition Theorem?

SSB Interview Questions for Electronics and Communication Engineering

  • What is Electronic?
  • What is communication?
  • Different types of communications? Explain.
  • What is engineering?
  • Difference between electronic and electrical.
  • What is cut-off frequency?
  • What is pass band?
  • What is modulation? And where it is utilized?
  • Explain AM and FM.
  • How does a mobile work?
  • How many satellites are required to cover the earth?
  • What is attenuation?
  • What is multiplexing?
  • Difference between CDMA and GSM.
  • What is an Amplifier?
  • Explain Full duplex and half duplex.
  • What is a feedback? And explain different types of feedback.
  • Advantages of negative feedback over positive feedback.
  • What is Oscillator?
  • What is a transducer and transponder?
  • What is a rectifier?
  • What is resistor?
  • What is capacitor?
  • What is inductor?
  • What is conductor?
  • What is a semi conductor?
  • What is diode?
  • What is op-amp?
  • What is transistor?
  • What is difference between Microprocessor and Microcontroller ?
  • What is Lenz law ?
  • What is Moore's Law ?
  • What is VOIP ?
  • What are different types of antennas ?
  • What is a multiplexer?

SSB Interview Questions for Computer Science/ IT

  • What are the basic functions of an operating system?
  • Explain briefly about, processor, assembler, compiler, loader, linker and the functions executed by them.
  • What are the difference phases of software development? Explain briefly?
  • Differentiate between RAM and ROM?
  • What is DRAM? In which form does it store data?
  • What is cache memory?
  • What is hard disk and what is its purpose?
  • Differentiate between Compiler and Interpreter?
  • What are the main difference between Micro-Controller and Micro- Processor?
  • What is a Real-Time System ?
  • What is the difference between Hard and Soft real-time systems ?
  • What is a mission critical system ?
  • What is the important aspect of a real-time system ?
  • If two processes which shares same system memory and system clock in a distributed system, What is it called?
  • What is the state of the processor, when a process is waiting for some event to occur?
  • What do you mean by deadlock?
  • Explain the difference between microkernel and macro kernel.
  • Give an example of microkernel.
  • When would you choose bottom up methodology?
  • When would you choose top down methodology?
  • Why paging is used ?
  • Difference between Primary storage and secondary storage?
  • What is multi-tasking, multi-programming, multi threading?
  • Difference between multi threading and multi tasking?
  • Define Demand paging, page faults, replacement algorithms, thrashing,.
  • Explain about paged segmentation and segment paging
  • While running DOS on a PC, which command would be used to duplicate the entire diskette?

SSB Interview Questions for Automobile Engineering

  • Explain the reason that why big tyres are used in rear of vehicles.
  • What is kingpin offset? State some of its application.
  • Explain the basic difference between BS2 and BS3 engine.
  • What is an injector pressure in heavy vehicles? Why it is used?
  • During the drive torque, what will be the weight shift?
  • In a tractor, how the hydrostatic propulsion systems work?
  • Explain the reason that why the tyres are always black in colour. Is this phenomena related to the heat conduction?
  • What is BHP? How can you measure BHP?
  • What will happen if someone adds oil to the fuel of four stroke bike engine?
  • How will you differentiate between two stroke engine and four stroke engine?
  • How will you differentiate between two stroke engine and four stroke engine?
  • What is the range of engine efficiency in case of two stroke engine?
  • What do you understand by CC of engine?
  • What is back compressor in engines?
  • How air conditioners work in cars?
  • What are three methods of heat transfer?
  • Why the plastic materials used in the screwdriver's handles?
  • Does diesel engine powered automobile use unit pump and unit injector?
  • If we use gasoline in diesel engine, what will happen?
  • What is octane number and cetane number?
  • What is the reason for emitting the white exhaust smoke during start of the vehicle? How will you prevent this?
Technical questions may arise from your favorite subject and from the PIQ information you have mentioned. It is not compulsory that one will face the technical questions during personal interview, but there is more probability of facing one.  Have you ever faced any technical question during your personal interview at SSB? Do share it in the comment box below.

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The Editorial Team of SSBCrack consists of a group of Professional writers and aspirants. Their main aim is to provide up to date information regarding SSB Interviews and sharing quality information about Indian Defence to help aspirants. Mail us to join our editorial team now.

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