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Placement Papers>>Bostch


 ON 24th Aug. 2004
 BOSCH REXROTH AG , Vatva , Ahmedabad
 1. Critical stress at which material will start to 
 (b)ultimate tensile stress 
 (c) proof stress 
 (d) none o the above 
 2. maximum degree of freedom in space 
 Ans. 6 
 3. bearing which will take axial and radial loads. 
 (a) thrust bearing 
 (b) deep groove 
 (c) taper roller 
 (d) --- 
 4. volume of water per cubic metre of air. 
 (a)specific volume 
 (b) specific gravity 
 (c) vapour pressure 
 (d) none of above 
 5. fluid is flowing through a frustum of cone. what is 
 the nature of graph of velocity 
 Vs. c/s area. {flow = velocity X c/s area} 
 (a) parabola 
 (b) hyperbola 
 (c) y=mx+c 
 (d) x=x. 
 6. Fluid in a pipe having no change in profile with 
 change in length of pipe ...explain type of flow. 
 c)fully developed profile <ans> 
 d)steady flow 
 7. Which are correct 
 I) Navier Stokes Eq. is .... of momentum 
 conservation eq. 
 II)bernoulis eq. is for viscous flow 
 III) REYNOLD no. >3000 always for turbulent flow. 
 a)I and II correct 
 b)I and II not correct 
 c)II and III correct 
 d)II and III not correct 
 8. Which can't be removed during alloying from Fe 
 a) co 
 b) N 
 c) Si 
 d) As 
 9.There are two ropes burning non uniformly (rate) and 
 clock half an hour each. which can't be clocked ? 
 a) 1 Hr. 
 b) 45 min 
 c)15 min 
 10. Lim n->0 (1+ 1/n)^n = 
 a) 1 
 11.time dependent increase in length at steady temp. 
 is called 
 a) superplasticity 
 b) creep 
 c) fatigue 
 d) none 
 12. Vicosity change with increasing temp. 
 a) decreases 
 b) increases 
 c) same 
 d) first decreases and then increases. 
 13. Direction of friction in bicycle tyres 
 a) along motion 
 b) opp. motion 
 c) Front opp. motion and vice versa 
 d) rear opp. motion and vice versa 
 14. Sp. gravity of a fluid 
 a) density of fluid at 0`c / density of water at o`c. 
 b) density of fluid at 0`c / density of water at T`c. 
 c) density of fluid at T`c / density of water at o`c. 
 d) density of fluid at T`c / density of water at T`c. 
 15. lateral strain / longitudinal strain 
 a) Poission's Ratio 
 b) Bulk Modulus 
 c) Modulus Of Elasticity 
 d) None 
 16. 10 coins & 1 defected coin and 2 weighs Find min 
 weighs req. to detect faulty coin 
 a) 2 
 17. 9 members in meeting scheluled at 10:00 A.M. , all 
 reaches at 9:48 A.M. . one member req. 2 min to intro 
 with other 
 find meeting delay with scheduled time of 10:00 A.M.. 
 a) 1 Hr. 
 b) 6 min 
 c) ... 
 d)At scheduled time 
 18. A completes job in 10 hr. and B completes in 15 
 hr.. Find when both together works 
 a) 6 hr. 
 b) 8 hr 
 c) 10 hr 
 d) none 
 19. A ball dropped from H height and moves 80% of 
 height each time.Total dist. covered 
 a) 4H 
 b) 5H 
 c) 7H 
 d) 9H 
 20. A cantilever beam loaded at free end find 
 reinforcement place 
 a) AT neutral axis 
 b) above neutral axis 
 c) below neutral axis 
 d) above and below neutral axis 
 21. punching a sheet of D dia and T thickness and S 
 ultimate tensile stress 
 a) 3.14 DTS 
 b) 3.14TS X D^2 
 c) 6.28 DTS 
 d)6.28 TS x D^2 
 22. & 23. two easy ques. of string mass equilibrium 
 24. Microstructure after quenching 
 a) Mertensite 
 b) pearlite 
 c) ........ 



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