Placement Papers - NTPC

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NTPC PAPER - 06 FEB 2008

Posted By : V.I.Shiyas And Ramanjeneya Reddy Rating : +85, -7
Hi Friends

Given below is the NTPC paper compiled by me and my friend Mr. B.Ramanjeneya Reddy. Hope this would be helpful; to all of you.  

1. An ice block submerged in the water, if the ice melts level of water_? (increase, decrease, remains same, none)

2. Simply supported beam with w point load at the middle, max. bending moment_? (wl/4)

3. Simply supported beam with UDL, max.deflection_? (wl4/384EI)

4. Cantilevel beam point load at tip, max.bending momemt comes at_? (end)

5. When bearing life L10 represents_? (bearings 10%survive, bearings 10% fails, none )

6. For welding high carbon steels which type of flame is used_? (oxidizing, carburizing, neutral, none)

7. Arrange the following cutting tools in decreasing order of machining hardness.. Ceramics

8. When P1 and P2 are the loads acting on bearings with life L1 and L2 then L1/L2=?

9. Product simplification does not mean_? (Product characterization)

10. Which of the following process has the most scope in manufacturing_? (CAD/CAM, CAM, CIM, All the above.)

11. Concurrent engineering means_? (Manufacturing, designing, both, none)

12. Which manufacturing process yields higher output and increases worker productivity_? (process layout, line+process, functional layout)

13. 18-4-1 represents_? Tungsten-Cr-Vn

14. For which material is negative allowance provided_? (Graphite, steel, bronze, cast iron)

15. What is the recrystallisation temperature of tin_? (60,300,1000,none)

16. What is the purpose of borax in soldering_?                      

17. Top gates are provided in which type of casting_? (Shallow casting, simple, complex, none)

18. Which statement is true regarding simple gear trains_? (i/p and o/p shafts r fixed, each shaft has 2 gears, i/p & o/p shafts r moving)

19. What is the purpose of normalizing_? (Refining of grain structure)

20. As the grain size is decreased_? (Hardness increases, corrosion resistance decreases, both)

21. Isothermal gas is filled in a vessel at a pressure P and temperature T then considering the compressible forces as the height increases pressure_?(linearly increases linearly decreases exponentially increase)

22. A bottle is filled with water and air and is tied to a string and is rotated in horizontal direction. Then in which direction will air bubble travel_?
(bottom, neck, uniformly spread)

23. An empty bottle (in vaccum) filled with a gas at temp T and press P when the pressure of bottle reaches P temperature of the gas is_?  (T,T/K,TK)

24. Bearing somerfield number _ with load on bearing?          
(increases, decreases, no change)

25. Critical radius for a sphere is_? (2k/h)

26. Critical radius exist for_? (spherical, cylindrical, both, slab)

27. Convectional resistance/internal resistance is called_? (biot number)

28. Nusselt no. is_? (hl/k)

29. EOQ=?

30. Which statement is true regarding critical path method_? (only one critical path exists for a network, more than one with same duration)

31. Shipment cost,inspection cost, storage cost comes under_? (carrying cost, holding cost,)

32. Ischronous governers sensitivity is_? (zero, infinite)

33. self energized brakes are_? (friction moment acts in the direction of application of force, opposite to the direction of force, does not need a force to act)

34 The ratio of heat capacities for evaporator and condenser is_? (Zero, infinity)

35. when steam and air mixture with partial pressure 0.06 and 0.07 enters a condenser what is the condenser pressure_? (0.06,0.07,0.53,0.03)

36. In pulverized burning of coal heat transfer from boiler to water occurs through_? (predominant radiation, convection, conduction, conduction+convection)

37. Rankine cycle efficiency for same parameters increases mostly with_? (reheat, regeneration, super heating)

38. Ericson cycle  with all reversible processes assume_? (carnot cycle, stirling, brayton)

39. Air delivery tank at outlet of reciprocating compressor is provided for_? (provide constant pressure, avoid cavitation)

40. High speed centrifugal pump has_?
(vanes faces in forward direction side, backward, radial vanes)

41. Thermal efficiency in decreasing order_?          
(Otto cycle>dual cycle>diesel cycle)

42. When a 1000 K body comes in contact with atmosphere at 300K a loss of 9000 KJ heat is transferred. The net available energy transferred is_?

43. When entropy of a system increases_? (unavailable energy increases)

44. Rolling is a process widely used for_?          
(I section, tubes)

45. Tool nomenclature_?

46. In francis turbine movement of steam_?

47. For low power consumption _? (rake angle should be increased / decreased, nose angle increased/ decreased)

47. Continuous chips occur in_? (High speeds, low speeds, both, none)

48. Primary forces in a reciprocating engine_?          
(fully balanced, partially balanced, completely unbalanced, none)

49. In proximate analysis pyrogallol is used for analysis of which element_? (nitrogen, oxygen)

50. Sulphur content in fuel greatly affects_? (corrosion)

51. Heat transfer through radiation can be increased by_? (decreasing emissivity and increases temperature of hot body)

52. Which theory of failure clearly explains the failure in case of ductile material_? (Maximum shear stress theory or Guests or trescas theory)

53. When a material is subjected to continuous cycles which limit is being verified_? (Endurance limit)

54. where is stress concentration maximum_? (notches, stress reducing throughcuts)

55. Power transmitted through a belt drive_? P(T2-T1)

56. According to Eulers theory crippling or buckling load is_? (Wcr = Cp2EI/l2)

57. During sensible heating, specific humidity_? (remains constant)

58. COP of a refrigerator is_? (greater than 1 )

59. The maximum temperature in a refrigeration cycle is_? (less than/greater than/equal to critical temperature)

60. The pressure at the throat of the nozzle_? (maximum, min)

61. for a statically determinate set of  forces for equilibrium_? (? f(X),f(Y),f(Z)=0,?M=0)

62. For a statically determinate set of forces_? (there r as many equations as the no. of unknowns)

63. 1-2-3 analysis is used for_? (1.break even analysis, ??)

64. A problem on mean time of service  something like a salesman has a rating of 120. considering 10% allowance time calculate the time required to serve 120_?

65. A problem n determining time in a queue??

66. Energy equation for a laminar flow is_?  (Uniform and steady, non uniform and unsteady)

67. Undercuts in welding occurs due to_? (low welding current, high welding current)

68. Work holding equipment in shearing_?

69. At the centre of a nozzle_? (Mach no<1 >=1;=1)

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