1. Which of the following is incorrect regarding inertia force? brings the body to equilibrium imaginary force acts upon a rigid body same direction as of accelerating force 2. D-Alemberts principle is used for which of the following? change static problem into a dynamic problem to calculate moment of inertia of rigid bodies to calculate angular momentum of a system of masses change dynamic problem to static problem 3. The net force acting on the crosshead pin is known as crank pin effort shaft effort piston effort crank effort 4. In a horizontal engine, reciprocating parts are accelerated when the piston moves from tdc to bdc bdc to tdc midway to tdc bdc to midway 5. For high speed engines, the cam follower should move with uniform velocity uniform acceleration and retardation simple harmonic motion cycloidal motion 6. 2 D ALEMBERT'S PRINCIPLE - DYNAMIC ANALYSIS IN RECIPROCATING ENGINES reversed effective force resultant force coriolis force net force 7. In a radial cam, the follower moves in any direction irrespective of the cam axis in a direction parallel to the cam axis in a direction perpendicular to the cam axis along the cam axis 8. For a 4 cylinder engine, when the pressure inside the cylinders exceeds the atmospheric pressure then. work is done on the gases work is done by the piston wall work is done by the gases work is done on the piston wall 9. The size of a cam depends upon base circle prime circle pitch circle pitch curve 10. Centre of masses of the system lies on the axis of rotation. 1, 2, 3 and 4 2, 3 and 4 only 1, 2, and 3 only 1, 3 and 4 only 11. Which of the following displacement diagrams should be chosen for better dynamic performance of a cam-follower mechanism ? simple hormonic motion cycloidal motion parabolic motion None of the options 12. The angle between the direction of the follower motion and a normal to the pitch curve is called base angle prime angle pitch angle pressure angle 13. In a horizontal engine, reciprocating parts are retarded when the piston moves from bdc to midway tdc to bdc midway to tdc bdc to tdc 14. Why the inertia torque acts in the opposite direction to the accelerating couple? to reduce the accelerating torque acts as a constraint torque increase the linear acceleration bring the body in equilibrium 15. Crank effort is the product of crank pin radius and thrust on sides force acting along connecting rod piston effort crankpin effort 16. For a multicylinder engine, the coefficient of fluctuation of speed would vary with remains unaffected number of cylinders length of connecting rod input temperature 17. The cam follower extensively used in air- craft engines is spherical faced follower flat faced follower roller follower knife edge follower 18. A circle drawn with centre as the cam centre and radius equal to the distance between the cam centre and the point on the pitch curve at which the pressure angle is maximum, is called base circle prime circle pitch circle None of the options 19. In a punching press, which of the following quantity is constant? angular velocity torque load angle of rotation 20. A body remains in equilibrium if inertia force is applied in the direction perpendicular to the resultant force inertia force is applied in the direction parallel to the resultant force inertia force is applied in the same direction to the resultant force inertia force is applied in the direction opposite to the resultant force 21. 2 m and the cylinder bore is 0.5 m. engine runs at 250 r.p.m & 30° from T.D.C. Find the piston effort. 40.2 n 37.3 kn 32.4 kn 35.2 kn 22. A machine punching 38 mm holes in 32 mm thick plate requires 7 N-m of energy per sq. mm of sheared area, find the maximum shear force required. 13.35 kn 26.7 kn 106.8 kn 53.4 kn 23. A radial follower is one that oscillates that reciprocates in the guides in which the follower translates along an axis passing through the cam centre of rotation. None of the options 24. For a 4 cylinder engine, if the minimum speed of the engine is half the maximum speed, then coefficient of fluctuation is 2 0.66 1.5 0.5 25. The maximum shear force required for punching depends on length of the plate sheared area total load speed of the flywheel 26. The balance energy required for punching is supplied by the flywheel by by variation of mass increase in its kinetic energy decrease in its potential energy decrease in its kinetic energy 27. In the turning moment diagram of a multicylinder engine, the work done during exhaust stroke is by valve on the gases piston wall the gases 28. 01mm. 46.34 43.43 44.14 49.85 29. Determine the frequency of transverse vibrations of the shaft. 41 37 35 31 30. In latitude 25.0 S, SA (spin axis) of a FG (free gyro) is in position S40E and horizontal. Find the tilt after 6 hours. 51.15 up 61.16 up 61.16 down None of the options 31. Neglecting the inertia of shaft and gears calculate the frequency of free torsional vibrations in Hz. 4.7 5.5 5.7 4.5 32. Determine the static deflection of the shaft in mm. 0.147 0.112 0.213 0.132 33. Which of the following is a pendulum type governor? hartnell governor watts governor porter governor None of the options 34. 5 m. Find the natural frequency of torsional vibrations. 5.32 5.65 6.66 5.86 35. When the pitching of a ship is upward, the effect of gyroscopic couple acting on it will be to raise the stern and lower the bow to move the ship towards port side to raise the bow and lower the stern to move the ship towards star-board 36. The axis of precession is to the plane in which the axis of spin is going to rotate. perpendicular parallel spiral None of the options 37. When the sleeve of a Porter governor moves downwards, the governor speed increases remains unaffected decreases first increases and then decreases 38. 5 and the mean speed is 20 rpm, find the maximum speed. 30 rpm 40 rpm 25 rpm 15 rpm 39. The height of a Watts governor is directly proportional to speed inversely proportional to (speed) directly proportional to (speed) inversely proportional to speed 40. The steering of a ship means turning of a complete ship in a curve towards right or left, while it moves forward rolling of a complete ship side-ways movement of a complete ship up and down in vertical plane about transverse axis None of the options 41. A Watts governor can work satisfactorily at speeds from 80 to 100 r.p.m 200 to 300 r.p.m 100 to 200 r.p.m 60 to 80 r.p.m 42. 5 and the mean speed is 20 rpm, find the minimum speed. 30 rpm 15 rpm 40 rpm 25 rpm 43. When the sleeve of a porter governor moves upwards, the governor speed remains unaffected increases first increases and then decreases decreases 44. 3 m. The engine rotates at 2400 r.p.m. clockwise when viewed from the rear. Find the gyroscopic couple on the aircraft. 12.046 kn-m 11.046 kn-m 13.046 kn-m 10.046 kn-m 45. A Hartnell governor is a inertia governor dead weight governor spring loaded governor pendulum type governor 46. 1m then find the other balancing mass situated at a distance of 0.2m. 40 20 10 80 47. 2m and r=0.3m, l=1m, find l2. 0.13m 1.04m 0.26m 0.52m 48. 2m, 0.15m, 0.25m and 0.3m. Angles between consecutive masses = 45, 75 and 135 degrees. 200.32 202.88 210.34 201.48 Submit Answers Retake Test More Mechanical Engineering Study Material › Mechanical Engineering Mock Tests with AnswersApplied Mechanics Mock TestAutoCAD Mock TestAutomobile Engineering Mock TestCAD CAM and Automation Mock TestDesign of Machine Elements Mock TestDynamics of Machinery Mock TestDynamics of Machines Mock TestElectrical Drives and Controls Mock TestElectrical and Electronics Engineering Mock TestEnergy Conversion Mock TestEngineering Materials Mock TestEngineering Metallurgy Mock TestEngineering Thermodynamics Mock TestEnvironmental Engineering Mock TestFabrication Technology Mock TestFluid Mechanics and Hydraulic Machines Mock TestFluid Mechanics and Machinery Mock TestFoundry Technology Mock TestHeat Engines Mock TestHeat Transfer Mock TestIndustrial Engineering Mock TestInternal Combustion Engines Mock TestMachine Design Mock TestManufacturing Processes Mock TestManufacturing Technology Mock TestMass Transfe Mock TestMaterial Handling Mock TestMechanical Measurements Mock TestMechatronics Mock TestMetallurgy Mock TestMetrology and Measurements Mock TestNon Destructive Testing and Evaluation Mock TestPower Plant Engineering Mock TestPrinciples of Food Preservation Mock TestPrinciples of Programming Languages Mock TestProblem Solving and Python Programming Mock TestProcess Planning and Cost Estimation Mock TestProduct Design and Value Engineering Mock TestProduction Engineering Mock TestRefrigeration and Air conditioning Mock TestStrength of Materials Mock TestTheory of Machines Mock TestTheory of Mechanics Mock TestThermal Engineering Mock TestThermodynamics Mock TestTotal Quality Management Mock TestTurbo Machines Mock TestUnconventional Machine Process Mock TestUsability Engineering Mock Test Mechanical Engineering Mock Tests