Top 250+ Solved Theory of Machines MCQ Questions Answer
Q. Which of the following gear is not used on non-parallel, non-intersecting shafts?
a. Bevel
b. Worm
c. Helical
d. Hypoid
e. All of the above
Q. 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
a. Lead angle
b. Helix angle
c. Pitch angle
d. Pressure angle
e. Axial pitch angle
Q. In case of flat belt drive the length of belt in case of
a. Open belt depends on sum of the diameters of pulleys
b. Open belts depends on difference of the diameters of pulleys
c. Cross belts depends on the sum of the diameters of pulleys
d. Cross belts depends on the difference of the diameters of pulleys
e. None of the above
Q. The purpose of providing multiple collars on a flat collar pivot bearing is to
a. Increase frictional resistance
b. To establish self-sustaining bearing condition
c. Distribute the frictional load because of limiting friction
d. Distribute the axial load because of limiting bearing pressure on a collar
e. None of the above
Q. In an at tomobile the power is transmitted from gear box to differential through
a. Universal joint
b. Hooke's joint
c. Kunckle join
d. Oldham's coupling
e. Bevel grars
Q. In simple harmonic motion the acceleration is proportional to
a. Displacement
b. Linear velocity
c. Angular velocity
d. Rate of change of angular velocity
e. None of the above
Q. Slip in belt drive is
a. Loss of power
b. Difference between the velocities of two pulleys
c. Difference between the angular velocities of two pulleys
d. Difference between the linear speed of the rim of pulley and the belt on it
e. None of the above
Q. Tangential acceleration direction is
a. Along the angular velocity
b. Perpendicular to the angular velocity
c. Opposite to the angular velocity
d. Any of (A) and (B)
e. Any of (A) and (C)
Q. Kinematics of machines deals with
a. Apparatus for applying mechanical power
b. Number of inter-related parts
c. The forces acting on the parts of the machine
d. The relative motion between the parts, neglecting the consideration of the force
e. None of the above
Q. A shaft revolving in a bearing forms a
a. Turning pair
b. Lower pair
c. Turning pair
d. Higher pair
e. Clindrical pair
Q. In case of locomotives the percentage of primary forces balanced is generally
a. 33 to 40 percent
b. 40 to 50 percent
c. 50 to 60 percent
d. 60 to 70 percent
e. None of the above
Q. The belt drive can transmit maximum power when maximum total tension in belt equals
a. Centrifugal tension
b. Twise the centrifugal tension
c. Thrice the centrifugal tension
d. Four times the centrifugal tension
e. None of the above
Q. The function of a governor is
a. To control the engine speed
b. To maintain the speed of engine constant
c. To maintain constant piston speed of engine
d. To maintain the speed of an engine within prescribed limits of varying load conditions
e. None of the above
Q. In case of spur gears the top land is
a. The part of the tooth surface lying below the pitch surface
b. The curve forming face and flank
c. Radius that connects the root circle to the profile of the tooth
d. The width of the gear tooth measured axially along the pitch surface
e. The surface of the top of the tooth