Top 250+ Solved Theory of Machines MCQ Questions Answer
Q. In taper roller bearing the contact angle is
a. Between 12? and 15?
b. Between 15? and 20?
c. Between 1? and 3?
d. Between 5? and 10?
e. Zero
Q. Which of the following is a sliding pair?
a. Bolt and nut
b. Ball and socket joint
c. Belt and pulley
d. Cross-head and guides
e. None of the above
Q. A body having an initial velocity of 10 m/s moves 200 mm in 5 sec when a force of 20 kgf is applied to it. If the acceleration due to gravity is 9 m/s2 the weight of the body should be
a. 15 kg
b. 18.35 kg
c. 11 kg
d. 18.65 kg
e. 16.5 kg
Q. The speed of gas turbine is usually
a. Same as natural frequency of vibrations
b. Below the natural frequency of vibrations
c. Well above the natural frequency of vibrations
d. Not connected with natural frequency of vibrations
e. None of the above
Q. The direction of Corioli's component of acceleration is
a. The direction of relative velocity vector for the two coincidental points rotated by 90? in the direction of the angular velocity of the rotation of the link
b. The direction of relative velocity vector for the two coincidental points rotated by 180? in the direction of the angular velocity of the rotation of the link
c. The direction of relative velocity vector for the two coincidental points in the direction directly opposite to that of angular velocity
d. The direction at right angles to that of relative angular velocity vector
e. None of the above
Q. For two meshing gears, their
a. Clearance must be same
b. No. of teeth must be same
c. Dedendum must be same
d. Addendum must be same
e. Module must be same
Q. The curve traced by the end of a thread as it is unwound from a stationary cylinder is known as
a. Involute
b. Circle
c. Epicycloid
d. Cycloid
e. Straight line
Q. The Ackermann steering gear consists of a four bar mechanism with
a. Only one pair turning and three paris sliding
b. All four pairs sliding
c. Only two pairs turning and low pairs sliding
d. Only three pairs turning and one pair sliding
e. All four pairs turning
Q. In the case of an automobile power is transmitted from the gear box to the differential through
a. Bevel gears
b. Hooke's joint
c. Oldham's coupling
d. None of the above
e. None of the above
Q. The linear velocity of a point on a link relative to any other point on the link will be
a. Along the line joining the two points
b. Perpendicular to the line joining the two points
c. Same as that of the end points of link
d. Perpendicular to the lower end of the link
e. None of the above
Q. A Peaucellier mechanism has
a. Ten links
b. Eight links
c. Four links
d. Twelve links
e. Six links
Q. Two parallel shafts, the distance between whose axies is small and variable, may be connected by
a. Knuckle joint
b. Clutch arrangement
c. Gear drive
d. Oldham's coupling
e. Universal joint
Q. The number of nodes in shaft carrying only tow rotor at the ends will be
a. An odd number
b. One
c. An even number
d. Zero
e. Two