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This set of Theory of Machines Multiple Choice Questions & Answers (MCQs) focuses on Theory Of Machines Set 9
Q1 | For two meshing gears, their
- Clearance must be same
- No. of teeth must be same
- Dedendum must be same
- Addendum must be same
- Module must be same
Q2 | The curve traced by the end of a thread as it is unwound from a stationary cylinder is known as
- Involute
- Circle
- Epicycloid
- Cycloid
- Straight line
Q3 | The Ackermann steering gear consists of a four bar mechanism with
- Only one pair turning and three paris sliding
- All four pairs sliding
- Only two pairs turning and low pairs sliding
- Only three pairs turning and one pair sliding
- All four pairs turning
Q4 | In the case of an automobile power is transmitted from the gear box to the differential through
- Bevel gears
- Hooke's joint
- Oldham's coupling
- None of the above
- None of the above
Q5 | The linear velocity of a point on a link relative to any other point on the link will be
- Along the line joining the two points
- Perpendicular to the line joining the two points
- Same as that of the end points of link
- Perpendicular to the lower end of the link
- None of the above
Q6 | A Peaucellier mechanism has
- Ten links
- Eight links
- Four links
- Twelve links
- Six links
Q7 | Two parallel shafts, the distance between whose axies is small and variable, may be connected by
- Knuckle joint
- Clutch arrangement
- Gear drive
- Oldham's coupling
- Universal joint
Q8 | Nominal top width of a B type V-belt is
- 13 mm
- 22 mm
- 32 mm
- 17 mm
- 31 mm
Q9 | The number of nodes in shaft carrying only tow rotor at the ends will be
- An odd number
- One
- An even number
- Zero
- Two
Q10 | Which of the following gear is not used on non-parallel, non-intersecting shafts?
- Bevel
- Worm
- Helical
- Hypoid
- All of the above
Q11 | In case of helical gears the angle between the plane containing the axes of the gear and plane passing through the pitch point is known as
- Lead angle
- Helix angle
- Pitch angle
- Pressure angle
- Axial pitch angle
Q12 | In case of flat belt drive the length of belt in case of
- Open belt depends on sum of the diameters of pulleys
- Open belts depends on difference of the diameters of pulleys
- Cross belts depends on the sum of the diameters of pulleys
- Cross belts depends on the difference of the diameters of pulleys
- None of the above
Q13 | The purpose of providing multiple collars on a flat collar pivot bearing is to
- Increase frictional resistance
- To establish self-sustaining bearing condition
- Distribute the frictional load because of limiting friction
- Distribute the axial load because of limiting bearing pressure on a collar
- None of the above
Q14 | In an at tomobile the power is transmitted from gear box to differential through
- Universal joint
- Hooke's joint
- Kunckle join
- Oldham's coupling
- Bevel grars
Q15 | In simple harmonic motion the acceleration is proportional to
- Displacement
- Linear velocity
- Angular velocity
- Rate of change of angular velocity
- None of the above
Q16 | Slip in belt drive is
- Loss of power
- Difference between the velocities of two pulleys
- Difference between the angular velocities of two pulleys
- Difference between the linear speed of the rim of pulley and the belt on it
- None of the above
Q17 | Tangential acceleration direction is
- Along the angular velocity
- Perpendicular to the angular velocity
- Opposite to the angular velocity
- Any of (A) and (B)
- Any of (A) and (C)
Q18 | Kinematics of machines deals with
- Apparatus for applying mechanical power
- Number of inter-related parts
- The forces acting on the parts of the machine
- The relative motion between the parts, neglecting the consideration of the force
- None of the above
Q19 | A shaft revolving in a bearing forms a
- Turning pair
- Lower pair
- Turning pair
- Higher pair
- Clindrical pair
Q20 | In case of locomotives the percentage of primary forces balanced is generally
- 33 to 40 percent
- 40 to 50 percent
- 50 to 60 percent
- 60 to 70 percent
- None of the above
Q21 | The belt drive can transmit maximum power when maximum total tension in belt equals
- Centrifugal tension
- Twise the centrifugal tension
- Thrice the centrifugal tension
- Four times the centrifugal tension
- None of the above
Q22 | The function of a governor is
- To control the engine speed
- To maintain the speed of engine constant
- To maintain constant piston speed of engine
- To maintain the speed of an engine within prescribed limits of varying load conditions
- None of the above
Q23 | In case of spur gears the top land is
- The part of the tooth surface lying below the pitch surface
- The curve forming face and flank
- Radius that connects the root circle to the profile of the tooth
- The width of the gear tooth measured axially along the pitch surface
- The surface of the top of the tooth
Q24 | The no of links in Hart mechanism is
- 8
- 6
- 5
- 4
- All of the above
Q25 | In a slider crank mechanism for l/r ratio of 4 the percentage of stroke converted by piston corresponding to 90? movement of crank from top centre will be
- 0 percent
- Less than 50%
- More than 50%
- 100%
- None of the above