WBPSC JE (Junior Engineer) exam is conducted by the West Bengal Public Service Commission for the recruitment of Junior Engineers in various departments of the West Bengal government. The exam typically consists of a written test(100 Questions X 2 Marks each =200 Marks, 2 Hours) and an interview. The written test typically includes technical subjects related to the candidate’s field of engineering. The interview is used to assess the candidate’s technical knowledge, problem solving ability and communication skills. The selection process may vary depending on the specific post for which the candidate is applying.
As we all know Previous year’s exam question paper is not available for many of aspirants so we decided to collect it and upload all previous year’s Question at one place. Now you can practice the questions anytime anywhere through your Smartphone. Here we uploading WBPSC JE MECHANICAL (2009) Questions. Soon we upload all previous year questions of 2004, 2009, 2016 and so on.
N.B- All questions are taken from WBPSC exam’s original question paper to help students at free of cost. we try our best to provide the same questions, if any Questions found incorrect we really sorry for that, please give us your valuable feedback so that we can Improve ourselves to give you better content in future.
WBPSC JE MECHANICAL (2009) QUESTION PAPER
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#1. The thermal stress is given by_____ (a=Co-efficient of linear expansion)
#2. The coefficient of discharge (Cd) in terms of Coefficient of Velocity (Cv) and Coefficient of contraction (Cc) equals
#3. The cutting tool in milling machine is held in position by
#4. The following is not a thermodynamic property
#5. For water tight joint such as in boilers, the rivets are driven
#6. An orifice is known as large orifice when the head of liquid from the centre of orifice is
#7. The extrusion chamber, die and ram are generally lubricated by
#8. As we increase the diameter of a heated solid cylinder at steady state
#9. Two plates are joined by rivets. The tearing of the plate at an edge may be avoided if the margin is made at least equal to
#10. The velocity distribution in laminar flow through a circular pipe follows the
#11. The forging of steel specimen is done at a temperature of
#12. Critical pressure of water is
#13. The deflection of a simply supported beam at ends at the mid point due to a central point load is given by
#14. Specific speed of a centrifugal pump is
#15. The maximum stroke length upto which a shaper works satisfactorily is
#16. Value of universal gas constant is
#17. A cantilever of length (L) carries a uniformly distributed load W kgf per unit length for the whole length. The shear force at the free end will be
#18. Air vessels in a reciprocating pump are fixed to
#19. The setting mime in case of planers as compared to that of a shaper is of the order of
#20. Heat addition to a system at constant volume will increase its
#21. The unit of mass moment of inertia is
#22. The work saved by fitting an air vessel to a single acting reciprocating pump is
#23. The soft grade grinding wheel are denoted by the letter
#24. In throttling process, pressure always
#25. The torque transmitted by a solid shaft of diameter 40 mm if the shear stress is not to exceed 400 kg/cm^2 would be
#26. The energy associated with molecular motion is called
#27. Which one of the following processes is the reverse of electroplating process?
#28. The turbomachine which increases the pressure rise in a gas with little increase in velocity is called
#29. A solid shaft of diameter 10 cm transmits 140hp at 140 rpm. The torque on the shaft will be
#30. The compression ratio for a diesel engine as compared to petrol engine is
#31. EDM is generally preferred for
#32. Manometer is used to measure
#33. A cantilever of length L carries a point load W at the free end is equal to
#34. Air fuel ratio theoretically for a petrol engine is approximately
#35. Gear which work under heavier service conditions are made of
#36. As compared to SI engine, CI engine enjoys the following advantages
#37. A coil is having stiffness k. It is cut into two halves , then the stiffness of the coil will be
#38. The mechanical efficiency of an IC Engine is equal to
#39. If the following operations are to be performed on a job, which would be performed first?
#40. Turbocharging in SI engines
#41. A close coiled helical spring is compressed. Its wire is subjected to
#42. Fuel injector is used for a
#43. A steady rest is used for
#44. In idling run of SI engine, the fuel-air ratio supplied by carburettor is
#45. Euler's formula is an empirical formula which is used for
#46. With the increase of pressure ratio, the volumetric efficiency of an air compressor
#47. the hobbing process for cutting gears as compared top that of shaping is
#48. BHP of an engine can be measured by
#49. The crippling load, according to Euler's theory of long column when both ends of the column are fixed is equal to
#50. The clearance ratio for a single stage compressor lies between
#51. NC machine tool is operated by
#52. For a low speed IC Engine, the requirement of flywheel is
#53. The CG of a quadrant of a circle is at a distance of
#54. Freon-12 has operating pressures of about
#55. The difference between the upper limit of a dimension known as
#56. O-ring at the piston of an IC engine is provided to
#57. Moment of inertia of a circular section about its diameter d is
#58. Power requirements of a refrigerator are related to COP as
#59. The size of a shaft is given as 2 +0.003/-0.003 means
#60. Catalytic converter is used to
#61. The force which produces an acceleration of 1m/s^2 in a mass of 1 kg is called
#62. In summer AC , the process used is known as
#63. Which one of the following threads is not used for transmission of power?
#64. High pressure of refrigerant drops to low pressure through
#65. The path of contact in involute gear is a
#66. The process of introducing carbon and nitrogen into solid ferrous alloy is known as
#67. The pitch of 24 mm diameter metric fine thread would be
#68. Refrigerant pressure is increased to condenser pressure by
#69. If T1 and T2 are the tensions on the tight and slack side of a belt and α is the angle of contact, then ratio of tensions T1/T2 is given by
#70. The process involving the heating of steel above upper critical temperature and then cooling it in the furnace is known as
#71. The size of a part, to which all limits of variation are determined, is called
#72. Malleability of a material is
#73. The force of friction which exists when the body is in motion is called
#74. Aluminum is the best of all metals for making pattern because it is
#75. The material used for piston rings is called
#76. The hardness of steel depends on
#77. Co-efficient of friction is the ratio of
#78. In which type of welding molten metal is poured for joining the metals
#79. In ideal diesel cycle the working substance is
#80. Stainless steel is resistant to corrosion due to
#81. Worm gearing is used to obtain considerable speed reduction between shafts whose axes are
#82. V-block is used in the working to check
#83. A screw jack uses
#84. The machining properties of steel are improved by adding
#85. An ideal fluid is defined as the fluid which
#86. A feeler gauge is used to check
#87. In a centrifugal pump, the liquid enters the pump
#88. Taps, dices and drills contain carbon
#89. For a floating body, the buoyant force passes through the
#90. Lathe bed is made of
#91. Delivery head of centrifugal pump is related to the speed of the impeller as
#92. Hooke's law holds good upto
#93. Bernoulli's theorem deals with the law of conservation of
#94. In which operation on a workpiece on lathe the spindle speed will be least?
#95. Discharge of a centrifugal pump (Q) is given as
#96. A beam is loaded as cantilever. If the load at the end is increased, the failure will occur
#97. Pitot tube is used for measurement of
#98. Drills are usually made of
#99. Multistage centrifugal pumps are used to
#100. The bending moment of a beam is maximum where the shear force is
