A. in increasing velocity ratio
B. in decreasing the slip of the belt
C. for automatic adjustment of belt posi-tion so that belt runs centrally
D. increase belt and pulley life
E. none of the above
Related Mcqs:
- If D1 and D2 be the diameters of driver and driven pulleys, then belt speed is proportional to__________________?
A. D1/D2
B. D2/D1
C. D1-D2.
D. D1
E. D1+D2 - The example of spherical pair is_____________________?
A. bolt and nut
B. lead screw of a lathe
C. ball and socket joint
D. ball bearing and roller bearing
E. none of the above - Pulley in a belt drive acts as_______________?
A. cylindrical pair
B. turning pair
C. rolling pair
D. sliding pair
E. surface pair - Oldham’s coupling is the ____________________?
A. second inversion of double slider crank chain
B. third inversion of double slider crank chain
C. second inversion of single slider crank chain
D. third inversion of slider crank chain
E. fourth inversion of double slider crank chain - When a ship travels in a sea, which of the effect is more dangerous___________________?
A. steering
B. pitching
C. rolling
D. all of the above
E. none of the above - The locus of a point on a thread unwound from a cylinder will be___________________?
A. a straight line
B. a circle
C. involute
D. cycloidal
E. helix - Which of the following mechanisms produces mathematically an exact straight line motion____________________?
A. Grasshopper mechanism
B. Watt mechanism
C. Peaucellier’s mechanism
D. Tchabichiff mechanism
E. Ackermann mechanism - The direction of Corioli’s component of acceleration is the direction _____________________?
A. of relative velocity vector for the two coincident points rotated by 90° in the direction of the angular velocity of the rotation of the link
B. along the centripetal acceleration
C. along tangential acceleration
D. along perpendicular to angular velocity
E. none of the above. - The maximum value of the pressure angle in case of cam is kept as________________?
A. 10°
B. 14°
C. 20°
D. 30°
E. 25°. - In S.H.M., acceleration is proportional to _________________?
A. velocity
B. displacement
C. rate of change of velocity
D. all of the above
E. none of the above
