Theory Of Machine MCQ Questions & Answers | Mechanical Engineering

A. 1.4 N-s/m

B. 18.52 N-s/m

C. 52.92 N-s/m

D. 529.2 N-s/m

A. Two forks

B. One fork

C. Three forks

D. Four forks

A. Because of difficulty in manufacturing cam profile

B. Because of loose contact of follower with cam surface

C. In order to have acceleration in beginning and retardation at the end of stroke within the finite limits

D. Because the uniform velocity motion is a partial parabolic motion

A. F_c = ar + b

B. F_c = ar - b

C. F_c = ar

D. $${{\text{F}}_{\text{c}}} = \frac{{\text{a}}}{{\text{r}}} + {\text{b}}$$

A. $$\omega \sqrt {{{\text{x}}^2} - {{\text{r}}^2}} $$

B. $$\omega \sqrt {{{\text{r}}^2} - {{\text{x}}^2}} $$

C. $${\omega ^2}\sqrt {{{\text{x}}^2} - {{\text{r}}^2}} $$

D. $${\omega ^2}\sqrt {{{\text{r}}^2} - {{\text{x}}^2}} $$

A. Hammer blow

B. Swaying couple

C. Variation in tractive force along the line of stroke

D. All of the above

A. Parallel to each other

B. Perpendicular to each other

C. Inclined at 45°

D. Opposite to each other

A. Scott-Russell's mechanism

B. Hart's mechanism

C. Peaucellier's mechanism

D. All of these

A. Will remain same

B. Will change

C. Could change or remain unaltered depending on which link is fixed

D. Will not occur

A. $$\frac{{{{\text{S}}_1} + {{\text{S}}_2}}}{{\text{h}}}$$

B. $$\frac{{{{\text{S}}_1} - {{\text{S}}_2}}}{{\text{h}}}$$

C. $$\frac{{{{\text{S}}_1} + {{\text{S}}_2}}}{{{\text{2h}}}}$$

D. $$\frac{{{{\text{S}}_1} - {{\text{S}}_2}}}{{{\text{2h}}}}$$