RPSC – Assistant – Conservator – of – Forest – Mechanical – Paper – 2011
| Sr. No | Questions with multiple options |
| 1. | The mechanism used in internal combustion engine is
(a) Crank mechanism (b) Slider mechanism (c) Slider crank mechanism (d) Circular mechanism |
| 2. | The rectilinear motion of a piston is converted into rotary motion by
(a) Piston (b) Piston rod (c) Crank (d) Connecting rod |
| 3. | Dynamics of machines deals with
(a) Relative motion between parts neglecting the consideration of forces (b) Forces acting on the parts of machine (c) Apparatus for applying mechanical power (d) Number of interrelated parts each having a definite motion |
| 4. | In a kinematic chain the minimum number of kinematic pairs required is
(a) One (b) Two (c) Three (d) Four |
| 5. | In simple harmonic motion the acceleration is proportional to
(a) Displacement (b) Linear velocity (c) Angular velocity (d) Rate of change of angular velocity |
| 6. | Two parallel shafts, the distance between whose axes is small and variable may be connected by
(a) Gear drive (b) Universal joint (c) Knuckle joint (d) Oldham’s coupling |
| 7. | In an automobile the power is transmitted from gear box to different through
(a) Knuckle joint (b) Universal joint (c) Hooke’s joint (d) Bevel gears |
| 8. | If there are L number of links in a mechanism, then the number of possible inversions would be
(a) L (b) L /2 (c) L + 1 (d) L + 2 |
| 9. | Can size depends upon
(a) Pitch circle (b) Base circle (c) Prime circle (d) Outer circle |
| 10. | Coriolis component is encountered in
(a) Slider crank mechanism (b) Four bar chain mechanism (c) Quick return mechanism (d) Circular mechanism |
| 11. | Idler pulley is used for
(a) Maintaining belt tension (b) Changing direction of rotation (c) For stopping motion frequently (d) For running during idling periods only |
| 12. | Slip in belt drive is
(a) Loss of power (b) Difference between velocities of two pulleys (c) Difference between velocities of two pulleys (d) Difference between linear speed of the rim of pulley and the belt on it |
| 13. | The pulley in a belt drive acts as
(a) Rolling pair (b) Sliding pair (c) Turning pair (d) Cylindrical pair |
| 14. | Sum of the tensions when the belt is running on the pulley is
(a) Less than initial tension (b) More than initial tension (c) More than twice initial tension (d) Half of initial tension |
| 15. | Function of a governor is to
(a) Control the engine speed (b) Maintain the speed of engine constant (c) Store energy and give up whenever required (d) Adjust variation of speed by varying the input to the engine |
| 16. | Rope brake dynamometer uses
(a) Oil as lubricant (b) Water as lubricant (c) Grease as lubricant (d) No lubricant |
| 17. | The brake commonly used on train boggies is
(a) Internal expanding (b) Band brake (c) Band and block brake (d) Shoe brake |
| 18. | Power transmitted by belt is maximum when maximum tension in the belt compared to centrifugal tension is
(a) 2 times (b) 3 times (c) 4 times (d) 5 times |
| 19. | The ratio of number of teeth and pitch circle diameter in a gear is called
(a) Pitch (b) Circular pitch (c) Diametral pitch (d) Module |
| 20. | Gear train in which the first and last gear are on the same axis is known as
(a) Simple gear train (b) Compound gear train (c) Epicyclic gear train (d) Reverted gear train |
| 21. | Critical speed of shaft depends on
(a) Mass (b) Stiffness (c) Mass and stiffness (d) Mass, stiffness and eccentricity |
| 22. | Maximum magnitude of the unbalanced force in a line perpendicular to the line of stroke is known as
(a) Swaying couple (b) Hammer blow (c) Unbalanced force (d) Resultant force |
| 23. | Usually following fraction of reciprocating masses is balanced in case of reciprocating engines
(a) Full (b) Half (c) One-quarter (d) Two-thirds |
| 24. | If damping factor in a vibrating system is unity, then the system will be
(a) Not damped (b) Highly damped (c) Under damped (d) Critically damped |
| 25. | A vibrating beam has following degrees of freedom
(a) 0 (b) 1 (c) 2 (d) 3 |
| Data Collected By – K. Jeyanthi | |
| Published On – 13th Dec 2021 | |
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