Top 250+ Solved Theory of Machines MCQ Questions Answer

a. In the involute system, the pressure angle is constant, from commencement to end of engagement

b. The vriation in the centre distance with in limits does not affect the two mating gears in the involute system

c. The straight teeth of the basic rank for the involute profile admits of simple tools

d. The interference is inherently absent in this system

e. The profile for the flank and face is a single curve in the involute system

a. The direction of rotation of first and last gear is the same

b. The firection of rotation of first and the last gear is opposite

c. The first and last gear are on the same shaft

d. The first and last gear are essentially on separate but parallel shafts

e. None of the above

a. Always restricted to 1 percent

b. Less than 5%

c. Zero

d. Depends on the belt material

e. Maximum permissible

a. To increase the power transmitted

b. To increase the speed of driven pulley

c. (A) and (B) above together

d. To reduce the speed of the driven pulley and consequently reduce the power output

e. None of the above

a. With circular type motion of follower

b. With cylindrical shape of follower

c. With disc type cam in which the position of the follower is determined by the radial distance from the cam axis.

d. With cricumferential contour cut in the surface of the cylinder which rotates about its axis

e. With cylindrical roller follower

a. sliding pair

b. Cylindrical pair

c. wrapping pair

d. rolling pair

e. Bevel grars

a. Non-intersecting

b. Parallel

c. Non-parallel-non intersecting

d. Intersecting

e. Non-parallel

a. Turning pair

b. Rolling and sliding pairs

c. Sliding pairs

d. Rolling pairs

e. Sliding and rotary pairs

a. In case of free vibrations the external force is applied at the ends only

b. Damping is resistance to the oscillartion

c. When the frequency of the external exciting force coincides with the natural frequency of the system, state of resonance is reached

d. Forced vibrations are independent of natural frequency of vibration

e. None of the above

a. Automobiles

b. Small engines

c. When driver and driven units are far off

d. Heavy duty machines

e. None of the above

a. No slope

b. Constant slope

c. Slope in positive direction only

d. Slope in both positive and negative direction

e. None of the above

a. Circular pitch

b. Diametral pitch

c. Module

d. Any of the above

e. None of the above

a. Slider crank mechanism

b. Four bar chain mechanism

c. Quich return mechanism

d. (A) and (B) above

e. (A) and (C) above

a. The resistance to angular acceleration

b. The mass of every element of a body multiplied by its distance from the axis

c. Any of the above

d. None of the above

e. Cross-head

a. Three

b. Six

c. Two

d. One

e. Four