2. This test contains 100 questions of Mechanical Engineering
3. Each correct answer will be awarded as 1 mark and penalty of 1/3 marks for each wrong answer
4. No award or penalty for un-attempted questions
5. Total time of test is 100 minutes.
6. In case of any technical problem in between the test, refresh the page.
7. Take this test very seriously, assume that this is your final exam
This section contains 100 questions. 1 Mark Each
Q1. Tensile Strain is
Q2. Hooke’s law is applicable within
Q3. Poisson’s ratio is
Q4.The total extension in a bar, consists of 3 bars of same material, of varying sections is
Q5. Elongation of a bar of uniform cross section of length ‘L’, due to its own weight ‘W’ is given by
Q6. A composite body of two materials under a common tensile load will have
Q7. What is the maximum bending moment for simply supported beam of length "l" carrying a point load “W” kN at its centre?
Q8. Uniformly varying load between two sections in shear force diagram is represented by ____
Q9. A bar of square cross section side ‘a’ is subjected to a tensile load P. On a plane inclined at 45° to the axis of the bar, the normal stress will be
Q10. A shaft is said to be in pure torsion if
Q11. If diameter of a shaft is doubled the power transmitted capacity will be
Q12. Two shafts in torsion will have equal strength if
Q13. Slenderness ratio is [l= length of column and k= least radius of gyration of cross section about its axis].
Q14. What is the value of Rankine's constant for cast iron?
Q15. If the effective length of a column is twice the actual length, then the column is ________
Q16. Design of thin cylinder is based on
Q17. A cylinder is said to be thin if the ratio of its thickness and diameter, is less than
Q18. The ratio of the tensile stress developed in the wall of a boiler in the circumferential direction to the tensile stress in the axial direction, is
Q19. The weight per unit volume of a liquid at a standard temperature and pressure is called
Q20. The centre of pressure acts …... the centre of gravity of immersed surface.
Q21. A uniform body 3 m long, 2 m wide and 1 m deep floats in water. If the depth of immersion 0.6 m, then the weight of the body is
Q22. The total pressure force on a horizontally immersed surface is
Q23. The absolute pressure is equal to
Q24. The liquid used in manometers should have
Q25. The metacentric height is the distance between the
Q26. The flow in a pipe is neither laminar nor turbulent when Reynold number is
Q27. During the opening of a valve in a pipeline, the flow is
Q28. The path traced by a single particle of smoke issuing from a cigarette is a
Q29. The flow of water through the hole in the bottom of a wash basin is an example of
Q30. When a cylindrical vessel containing liquid is revolved, the surface of the liquid takes the shape of
Q31. Euler's equation of motion for liquids is based on the assumption that the
Q32. All the terms of energy in Bernoulli's equation have a dimension of
Q33. The velocity of the liquid flowing through the divergent portion of a Venturimeter
Q34. The pitot tube is used for measurement of
Q35. The coefficient of discharge, velocity, and contraction are related as
Q36. Which one of the following is a major loss?
Q37. A liquid flows through pipes 1 and 2 with the same flow velocity. If the ratio of their pipe diameters d1: d2 be 3:2, what will be the ratio of the head loss in the two pipes?
Q38. To avoid cavitation in centrifugal pumps
Q39. Head developed by a centrifugal pump depends on
Q40. The unit discharge, Q and unit speed N curve for a turbine is shown in figure. Curve B is for
Q41. Which of the following is the first law for a closed system undergoing a cycle?
Q42. In a constant volume process, internal energy change is equal to
Q43. What is the criterion provided by Clausius inequality for the process which is impossible?
Q44. When a system is taken from state A to state B through a reversible path 1 and again the system is taken to its initial state A from B through different reversible path 2, then what will be the effect on entropy?
Q45. Two reversible adiabatic paths
Q46. The reason for supercharging in any engine is to
Q47. If engine speed is same for both two stroke and four stroke cycle than two stroke cycle engine give _______ number of power stroke as compared to the four stroke
Q48. An air standard otto cycle consists of _______
Q49. A petrol engine has a compression ratio.......
Q50. The process of breaking up a liquid into fine droplets by spraying is called...
Q51. In vapour compression cycle, the condition of refrigerant is high pressure saturated liquid
Q52. One ton of refrigeration is equal to the refrigeration effect corresponding to melting of 1000 kg of ice
Q53. Critical pressure of a liquid is the pressure
Q54. A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of- 23°C. The Cannot coefficient of performance of cycle will be
Q55. Lancashire boiler is
Q56. A safety valve usually employed with stationary boilers is
Q57. The temperature at which a pure liquid transforms into vapour at constant pressure is called as
Q58. Critical temperature of water is.....
Q59. Triple point of pure substance is a point at which.......
Q60. Latent heat of steam with decreased in pressure.
Q61. The cam and follower without a spring forms
Q62. Gruebler’s criterion for determining the degrees of freedom (n) of a mechanism having planar motion is
Q63. What are the minimum no. of links in a constrained planar mechanism involving revolute pairs and two higher pairs ?
Q64. Which of the following is used to connect two shafts having lateral misalignment
Q65. The speed of the crankshaft is found to vary between 150 r.p.m. & 180 r.p.m. during one cycle of operation. What is the coefficient of fluctuation of speed?
Q66. Which of the following is not true about flywheel
Q67. For minimizing the speed fluctuations of an engine as a prime mover, it must have
Q68. What will be the change in the vertical height (in m) of a watt governor, when the speed is decreased from 50 rpm to 25 rpm
Q69. Axial thrust present in
Q70. Pure rolling motion can be transmitted between two conical surfaces in contact in case of
Q71. Centrifugal clutches are used when power unit has
Q72. If number of contacting surfaces are 5, then number of disks required in multi disk clutch are?
Q73. Shearing efficiency for riveted joint is the ratio of
Q74. When plate thickness is less than 8mm, diameter of rivet hole must not be
Q75. When the length of journal is equal to the diameter of journal, then the bearing is said to be a
Q76. Which of the following bearings permits misalignment
Q77. What is meant by jump phenomenon in cam and follower system
Q78. Which type of cam does not require any external force to have contact between cam and follower
Q79. In flexible drives, rotary motion of driving shaft is directly converted to rotary motion of driven shafts
Q80. V belts result in smooth and quite operation even at high speeds.
Q81. Eutectoid steel contains _
Q82. The mixture of α-ferrite and cementite is called as
Q83. At room temperature which is the most stable form of iron
Q84. The heat treatment process used for softening hardened steel is
Q85. In a hardening process, the hypo-eutectoid steel is
Q86. In spheroidising process, the steel is
Q87. Seam-welding is ...
Q88. Thermit welding is a form of...
Q89. In MIG welding, the metal is transferred in the form of...
Q90. Which of the following methods of NDT requires leak proofing of casting before inspection?
Q91. Which of the following types of rays is used in radiography for the inspection of castings?
Q92. In cold chamber die casting, what is the maximum pressure that can be applied?
Q93. In hot chamber die casting, before the end of the stroke, what uncovers the port
Q94. Up to what tolerances can pressure die casting be possible
Q95. The point at which the cutting tool reaches, beyond which it will not function satisfactorily until it is reground, is called as
Q96. The forces required for metal cutting operation
Q97. Continuous chips are formed during metal cutting operation due to
Q98. Which of the following machine is superior to other machines as regards accuracy and better surface finish
Q99. Which is the backbone of lathe machine
Q100. Which type of machining can be done by milling machine