SECTION-2

###### Theory of Machine objective type questions/Multiple choice questions

Q31. In a reciprocating steam engine, which of the following forms a kinematic link?

(a) Cylinder and piston

(b) Piston rod and connecting rod

(c) Crankshaft and flywheel

(d) Flywheel and engine frame

Ans: (c) Crankshaft and flywheel

Q32. The motion between a pair when limited to a definite direction, irrespective of the direction of force applied, is known as

(a) completely constrained motion

(b) incompletely constrained motion

(c) successfully constrained motion

(d) none of these

Ans: (a) completely constrained motion

Q33. The motion of a shaft in a circular hole is an example of

(a) completely constrained motion

(b) incompletely constrained motion

(c) successfully constrained motion

(d) none of these

Ans: (b) incompletely constrained motion

Q34. The example of successfully constrained motion is a

(a) motion of an I.C. engine valve

(b) motion of the shaft between a footstep bearing

(c) piston reciprocating inside an engine cylinder

(d) all of the above

Ans: (d) all of the above

Q35. When the elements o fa pair are kept in contact by the action of external forces, the pair is said to be a

(a) lower pair

(b) higher pair

(c) self-closed pair

(d) force-closed pair

Ans: (d) force-closed pair

Q36. The cam and follower is an example of

(a) sliding pair

(b) rolling pair

(c) lower pair

(d) higher pair

Ans: (d) higher pair

Q37. Which of the following is an example of a higher pair?

(a) Toothed gearing

(b) Belt and rope drive

(c) Ball and roller bearing

(d) all of these

Ans: (d) all of these

Q38. The relation l=2/3(j+2) apply only to kinematic chains in which lower pairs are used. This may be used to kinematic chains in which higher pairs are used, but each higher pair may be taken as equivalent to

(d) any one of these

Q39. The velocity of a particle moving with simple harmonic motion, given by

\text { (a) } \omega \sqrt{x^{2}-r^{2}}

\text { (b) } \omega \sqrt{r^{2}-x^{2}}

\text { (c) } \omega^{2} \sqrt{x^{2}-r^{2}}

\text { (d) } \omega^{2} \sqrt{r^{2}-x^{2}}

Where x Displacement of the particle from mean position.

\begin{array}{l}
\text { Ans: }\text { (b) } \omega \sqrt{r^{2}-x^{2}}
\end{array}

Q40. The frequency of oscillation of a compound pendulum is

\text { (a) } 2 \pi \sqrt{\frac{g h}{k_{G}^{2}+h^{2}}}

\text { (b) } 2 \pi \sqrt{\frac{k_{G}^{2}+h^{2}}{g h}}

\text { (c) } \frac{1}{2 \pi} \sqrt{\frac{g h}{k_{G}^{2}+h^{2}}}

\text { (d) } \frac{1}{2 \pi} \sqrt{\frac{k_{G}^{2}+h^{2}}{g h}}

\text { Ans: (c) } \frac{1}{2 \pi} \sqrt{\frac{g h}{k_{G}^{2}+h^{2}}}

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##### Read More Sections of Theory of Machine Objective Questions

Each section contains maximum 80 Questions. To practice more questions visit other sections.

Theory of Machine MCQ – Section-1

Theory of Machine MCQ – Section-2

Theory of Machine MCQ – Section-3

Theory of Machine MCQ – Section-4

Theory of Machine MCQ – Section-5

Theory of Machine MCQ – Section-6