L&T Technical Interview Question

Will you please provide here the Larsen & Tourbo Technical Interview Questions?

Here are some Larsen & Tourbo Interview Questions:

1. Difference b/w fire and water tube boilers

2. What is super-heating ?

3. Till what extent will you superheat the steam before it is introduced in the turbine

4. Why is feed water used in power plant treated and how? (ANS: to prevent scaling, corrosion , pH >=7 ..etc)

5. A hollow shaft and a solid shaft are given the same torsion. A hollow shaft can withstand higher stresses. Why?(ANS: torsion formula)

6. A piston-cylinder arrangement is shown.

Air is entering through both the valves in equal amounts i.e. the air pressure on either sides of the piston is the same. Will the piston move ? If yes which side and why ?(ANS: left side F=P*A; area on left side of piston is less)

7. A cycle pump is used to pump a tire. After pumping for a long time the pump is left in its position for 3-4

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Answered By StudyChaCha Member