Top 250+ Solved Theory of Machines MCQ Questions Answer
Q. Sensitiveness of a governor is
a. The range of variation of engine speed
b. The ratio of the maximum speed to minimum speed within the operating range
c. The ratio of the difference between the maximum and mean speed to that of minimum to mean speed
d. The ratio of the difference between the maximum and minimum equilibrium speed to the mean equilibrium speed
e. None of the above
Q. A kinematic chain becomes a mechanism when
a. Any one link is fixed
b. There is no such criterion
c. None of the links are fixed
d. All link are fixed
e. First link is fixed
Q. Module for gear is expressed in terms of
a. Number of teeth per unit diameter (mm)
b. Diameter (MM) per number of teeth
c. Millimeters
d. (mm)-1
e. None of the above
Q. Which is incorrect statement, if any
a. The force of friction is independent of the velocity of sliding
b. The force of friction is independent of the extent of the surfaces in contact
c. The force of friction is directly proportional to the pressure between the surfaces in contact
d. The laws of friction are true when the intensity of the pressure between the surfaces is small
e. None of the above
Q. In the cam mechanism, a mushroom follower is
a. One with cylindrical roller held by a pin to the follower assembly
b. One provided with a flat face with a perfect flat plane
c. One identical to a knife edge follower with spherical end
d. One which moves irregularly with uniform movement of cam
e. One which moves in zig-zag path
Q. In a slider-crank mechanism
a. there are 4 turning pairs
b. one is a turning pair and 3 sliding pairs
c. two turning pairs and two sliding pairs
d. None of the above
e. Slider-crank mechanism
Q. A nut and bolt form a
a. Helical pair
b. Sliding pair
c. Spherical pair
d. Turning pair
e. Rolling pair
Q. In case of meter gauge locomotives the distance between wheel centres is
a. 4 ft. 6 inch
b. 1 metre
c. 90.5 cm
d. 3 ft. 9? inch
e. None of the above
Q. In case of gears the tooth fillet is
a. Width of the gear tooth
b. Radius that connects the root circle to the profile of the tooth
c. Surface of the top of the tooth
d. Curve forming face and flank
e. Part of the tooth surface lying below the pitch surface
Q. The sense of tangential acceleration of a link
a. Is the same as that of velocity
b. Is opposite to the velocity
c. Could be either the same or opposite to velocity
d. Is always in a plane perpendicular to the plane of motion
e. None of the above
Q. A beater machine in a pulp mill is driven by a 50 H.P. motor using 6 vee belts of D section. If one of the belt breaks after a month
a. All the belts have to be replaced
b. Broken belt may be replaced by the similar etc
c. Broken belt and at least one adjacent belt should be replaced
d. Broken belt and at least two adjacent belt should be replaced
e. None of the above
Q. A pantograph is a mechanism or a kinematic arrangement comprising
a. A lower pair
b. Two lower pairs
c. Three lower pairs
d. 10 links
e. None of the above
Q. Which one of the following is lightest?
a. Sperm
b. 1 British ton
c. 1 Metric tonne
d. 1 US long ton
e. 1 US short ton