Basic Computer Science Engineering Interview Questions

General Questions

1. Which is the first super computer built in India?
2. Explain boundary fill, flood fill and scan fill
3. What is the language used for Artificial Intelligence?
4. Define Avalanche diode multiplication
5. How many flip flops are required for a modulo 19 counter?
6. A ring counter’s initial state is 01000. After how many clock cycles will it return to its initial state?

     UNIX

7. Explain Fork as applied to UNIX.In UNIX what does profile contain?
8. In UNIX what is echo used for? What is the requirement of MIMD?
9. In UNIX what is the difference between select and poll?

    System Programming

10. How is relocatable code generated in an assembler?
11. Differentiate between little Endian and Big Endian data format?
12. How much information can be stored in 1-byte of an IBM pc compatible?
13. Explain the superscalar architect of Pentium.What is runtime locatable code?
14. What is the difference between risc and cisc? Whose product is the Power PC?
15. What are the functions done during the first pass of an assembler?

Compiler Construction

16.  How is Code optimization done using DAG?
17. How do parsers work?

Theory of Computation

18. What is Moore machine?What is a turing machine?What is a finite automata?

Software Engineering

19. Which are the different phases in a software life cycle?
20. How much time is usually spent in each phase and why?
21. Why are analysis and testing phases very important?
22. What is testing? Which are the different types of testing?
23. What is unit testing, integration testing etc? Describe VRTX

Computer Networks

24. Why are networks layered? What is the advantage of that?
25. What is gateway used for?
26. What are network topologies? Which are the different types?
27. Give an example of Bus type network?
28. What does CONNECT mean?
29. Explain about Ethernet? Which is the protocol used in Ethernet?
30. Explain the Shannon Hartley theorem.Give the features of CDMA technology
31. How many layers are there in OSI?
32. Explain HTTP, SMTP,TCP,UDP,WAP.IP and POP3
33. Why are partitions used? What are the different types of Partitions?
34. What bandwidth is suggested for ATM?What is meant by Subnet?
35. What is RSA? What is DHCP used for?
36. What is waterfall model, prototype model etc?
37. What is microwave propagation along the surface of the earth called?
38. How does WINMAIN look like? What is the disadvantage of pcm?

Database Management Systems

39. What is atomicity? What is indexing in databases?
40. What is the method used for disk searching?
41. Explain Codd’s rule related to database
42.  What is SQL? Explain about DNS  
43. Briefly explain Vision critical systems? Which is the database using VCS?
44. Explain about RTOS and RDMS 

Basic Mechanical Engineering Interview Questions

Thermodynamics

1. What are various thermodynamic systems and their basic definitions?
2. What is meant by the triple point of water?
3. Which Law of Thermodynamics is relevant when you inflate a tyre?
4. Explain a perfect gas and its properties

Thermal Engineering

1. Why don’t CI engines require spark plug?
2. What is an indicator diagram? What are its advantages? How is it different from a P-V diagram?
3. What is the difference between turbocharging and supercharging?
4. What is knocking, detonation and pre-ignition? What are the preventive methods?
5. New trends in IC engines, CDI,Ball piston, Cam less engines, GDI and VTEC
6. Explain super saturated flow in steam nozzles
7. What is reheat factor?
8. What is meant by a pulsed detonation engine?
9. Is turbocharging possible in a petrol engine? Why?

Heat and Mass Transfer

1. State Fourier’s laws of conduction in one dimension
2. Explain LMTD and NTU methods
3. Explain the concept of black body
4. Differentiate between parallel and counter flow exchangers

Refrigeration and Air Conditioning

1. Explain simple vapour compression cycle in a refrigerator
2. Which compressor is usually used in air conditioners?
3. What is ASHRAE?
4. Explain Joule-Thomson effect
5. Explain Sensible heating and cooling, superheating and Subcooling
6. What is the significance of multicompressor refrigerator system?
7. What is meant by 1 TR?
8. What is meant by sensible heat factor?
9. Differentiate between RSHF and GSHF
10. What is meant by effective temperature?

Automobile Engineering

1. During the starting of a vehicle, the exhaust smoke appears white. Why?
2. What is a differential and how does it work?
3. What are MPFI and TPFC systems?
4. Mention the common automobile specifications
5. What is SAE?
6. Certain vehicles can be started by keeping the gears engaged, while certain others cannot. Explain

Gas Dynamics

1. What are Ramjet,Scramjet,Turbojet,Turboprop and Turbofan?
2. What are the basics of Fanno flow and Rayleigh’s flow?
3. What is the difference between open circuit and closed circuit wind tunnel?
4. Draw the adiabatic steady flow ellipse
5. What is meant by a stagnation state?
6. Explain velocity co efficient and nozzle discharge coefficient

Theory of Machines

1. How do you polish a ball bearing?
2. Which gear is used to obtain maximum speed ratio?
3. Explain the functions of Gyroscopes
4. What are the different types of clutches in use and their working?
5. Draw a Hooke’s joint and explain its function
6. What is the type of braking system in trains? Explain its function
7. Explain the function of a gearbox. What are the types of gearboxes?

Manufacturing Processes

1. Differentiate between a lathe and a milling machine
2. What are CNC and DNC machines?
3. How do you a machine a square cross section in a lathe?
4. What are satellites. Why cant single carbide be cut efficiently?
5. Differentiate between Upmilling and Downmilling
6. What is a self centering chuck?
7. What are the different indexing mechanisms used in conventional machining?
8. Why are EBM processes more widely used than LBM?
9. What are cutting fluids and their functions?

Material Science and Metallurgy

1. Draw the Fe-C equilibrium diagram
2. What are ABS,GPS,SBC,SQHC and DOHC?
3. What is meant by fatigue and creep? Draw and explain the creep curve

Strength of Materials

1. What is the significance of a Bending Moment diagram
2. Can Poisson’s ratio be negative?
3. What is Euler’s theory?
4. What is Endurance limit?

Fluid Mechanics and Hydraulic Machines

1. Differentiate between absolute and kinematic viscosity.
2. What is water hammer? What is the function of surge tank and penstock?
3. What is magnus effect? Explain Mach number.
4. What is Cavitation? Explain slip in reciprocating pumps.
5. Describe draft tube and its applications
6. Describe air vessel, hydraulic ram, accumulator and lift
7. Give classification of turbines and the difference between impulse and reaction turbine

Machine Design

1. Differentiate between service factor and factor of safety.
2. Draw a typical true stress versus strain curve .
3. What is wahl’s stress factor
4. Explain hydrodynamic theory of lubrication
5. Classify welded and riveted joints.
6. Explain the term virtual number of teeth in helical and bevel gears
7. How do you specify the life of an anti friction bearing?
8. Explain the term membrane stresses in vessels under pressure

Aerospace Engineering

1. What are the desirable features of an aerofoil? What is lift and drag?
2. Explain the terms Chord, span, Frontal area, aspect ratio and camber
3. How are aerofoils designated in NACA 4 digit,5 digit and 6 digit systems?
4. What is the Kutta-Joukowski theorem for the lifting force?
5. Explain geometric, kinematic and dynamic similarities
6. Distinguish between absolute ceiling and service ceiling
7. What are flaps used for? What are the types of flaps?

Cryogenics

1. Define Upper and Lower critical fields w.r.t. superconductivity
2. Mention two applications of cryogenics in manufacturing technology
3. Describe a system suitable for the liquefaction of Helium
4. Define FOM
5. Draw T-S diagram for Linde dual pressure system

Basic Civil Engineering Technical Questions

Building materials and Construction

1. What are the dimensions of the standard brick?
2. What are thin shell roofs? Why are they becoming popular?
3. Name the different types of retaining walls

Structural Analysis

1. What is buckling or crippling load?
2. Define slenderness ratio. What is its effect on design of compression members?
3. What is meant by specific yield and specific retention?
4. Shear force and BM diagrams for different types of loadings on beams

Mechanics of structures

1. Differentiate between bending moment and twisting moment
2. Differentiate between mild steel and HYSD bars
3. Differentiate between proof resilience and modulus of resilience
4. What is meant by strain energy?

Fluid Mechanics

1. What is a spillway?
2. What is total energy line?
3. What is a flow net? Discuss its uses
4. Why isn’t a venturimeter used commonly for measuring discharge in houses?
5. What is critical hydraulic gradient?
6. Differentiate between weir, notch and barrage

Geotechnical Engineering

1. What is geosynthetics? Mention its applications in civl engineering field
2. What do you understand by 80/100 bitumen?
3. Which is commonly used-bitumen or tar? Why?
4. What are the precautions to be taken for construction in marshy soil?
5. What is the relation between submerged unit weight and submerged weight?
6. What are the different types of foundations adopted for different soils?
7. What is differential settlement?
8. Discuss the importance of Attenbug’s limits in soil engineering
9. Differentiate between activity and sensitivity of soils
10. Differentiate between soil stabilization and ground improvement
11. How does machine foundation differ from an ordinary foundation?
12. What is the permanent solution applied for the restoration of leaning Tower of Pisa?

Reinforced Concrete Structures

1. What is pre stressed concrete? What are its ingredients?
2. What do 53 stand for in 53-grade cement?
3. How do you construct a 25 storey building with no columns?
4. What are the loads to be considered for the design of bridges?
5. Differentiate between pre-tensioning and post-tensioning
6. What is the L/D ratio of a cantilever beam?
7. What type of dam is the Idukki dam? Give its details and peculiarity

Transportation Engineering

1. What is camber?
2. What is cutback bitumen? What are its special uses?
3. Draw a typical C.S. of a permanent way
4. What does IRC stand for?
5. Define angularity number and give practical applications
6. What material as ballast would you suggest for a high speed track? Why?
7. What is the usual width of a single lane and a double lane road?

Environmental Engineering

1. Distinguish between slow and rapid sand filters
2. What is super chlorination?
3. What is canopy?
4. Differentiate between BOD and COD

Advanced Construction and Construction Technology

1. What is batching? Differentiate between volume and weight batching
2. How is underwater concreting carried out?
3. What are the forces involved in underwater construction?
4. What do 20 stand for in M20 mix concrete?

Engineering Geology

1. What is littoral drift?
2. Differentiate between faults and folds

Surveying

1. How is a theodolite leveled?
2. What are advantages of electronic theodolite over transit theodolite?
3. Give the standard lengths of chains used in surveying
4. What is a benchmark? Name the different types 

RailwayRecruitment Boards (RRB) March 2010 Recruitment

The Indian Railways have invited applications from eligible candidates who are Indian citizens for recruitment for the following  posts in different RailwayRecruitment Boards (RRBs).

Applications are to be sent directly to the respective RRBs :

• Section Engineer : 1758  posts – pay scale of Rs.9300-34800 grade pay Rs.4600 
• Junior Engineer :  4450 posts – pay scale of Rs.9300-34800 grade pay Rs.4200
• Junior Engineer :  294 posts – pay scale of Rs.9300-34800 grade pay Rs.4200

Rs 60 has to be paid as application Fee in the form of DD/IPO.

Application duly filled in have to be sent to the Assistant Secretary/ Secretary/Member Secretary of the respective RRB where candidate want to apply.

The last date to apply is on or before 05/04/2010. Candidates can also apply online at respective RRB websites.

The list of all RRB with their website is available at

http://www.rrcb.gov.in/rrbs.html.