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Essar Interview Questions - 01 July 2007

Posted on :18-02-2016
Essar Placement Paper:-


14 August 2006 (Vijayawada):-

Q1. In dc generators brush lead is given to which side (i.e towards rotor direction or in opposite direction) to avoid armature reaction? 

Q2. Given voltage and power ratings of three bulbs and asked to find which bulb has large resistance?

Q3. In batteries after completion of charging which colour gas is emitted from it?

Q4. Given an application and asked which type of dc motor is used?



01 July 2007:-

Q1. What amount of power required to make the 2-stroke petrol engine to 4-stroke diesel engine?

Q2. Which law says that pressure can be transferred from one point to another in an undiminished form?

Q3. Is bernoullis theorem is applicable for steady or unsteady flow?

Q4. What is the melting point of Aluminum?

Q5. Binary power cycle uses --------- as working fluid?

Q6. In the reversible adiabatic process entrophy is constant or not?

Q7. Viscosity of the lubricant ---------- with increase in temperature?

Q8. What is the percentage of carbon in tool steel?

Q9. What is the purpose of runner in casting?

Q10. Formula for deflection of beam? 

ANS: PL/AE

Q11. What is the composition of gunmetal?

Q12. Is Vane pump Positive or non-positive displacement pump?

Q13. If a ball is kept at a height of x(m), from that position it is droped. Does the potential energy is equal to the kinetic energy if the ball goes inside the earth as same distance where it is relieved?

Q14. What is the fuel used in airplanes?

Q15. In which process the temperature of the system changes but there is no heat transfer to the surroundings?

Q16. Engine valve seat is cooled at ----- temperature in liquid nitrogen.

Q17. Which has high coefficient of friction? disc or band brakes?

Q18. Axial turbine is of which type?

a) high head 
b) low head


Q19. Corrosion is inhibited due to oxidation or reduction?

Q20. Introduction of sulphur in mild steel increases or decreases the machine ability?

Q21. What is the use of draft tube in turbine?

a) to increase work o/p of runner 
b) To increase turbine output.


Q22. Which engine is the most efficient in terms of compression ratio?

Q23. For the same compression ratio heat removed in each cycle is efficient in -----otto cycle or diesel cycle?

Q24. What is the specific heat capacity of air?

Q25. What is the shape of a u.d.l of cantilever beam?


  
   






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