Theory Of Machine MCQ Questions & Answers | Mechanical Engineering

A. $$\frac{{\text{m}}}{{{\text{m}} + {\text{M}}}}$$

B. $$\frac{{\text{M}}}{{{\text{m}} + {\text{M}}}}$$

C. $$\frac{{{\text{m}} + {\text{M}}}}{{\text{m}}}$$

D. $$\frac{{{\text{m}} + {\text{M}}}}{{\text{M}}}$$

A. 0°

B. 90°

C. 180°

D. 270°

A. Ball bearing

B. Roller bearing

C. Needle roller bearing

D. Thrust bearing

A. Same

B. Different

C. Unpredictable

D. None of these

A. $$ \pm {\text{cm}}{\omega ^2}{\text{r}}$$

B. $$ \pm {\text{a}}\left( {1 - {\text{c}}} \right){\text{m}}{\omega ^2}{\text{r}}$$

C. $$ \pm \frac{{\text{a}}}{{\sqrt 2 }}\left( {1 - {\text{c}}} \right){\text{m}}{\omega ^2}{\text{r}}$$

D. $$ \pm 2{\text{a}}\left( {1 - {\text{c}}} \right){\text{m}}{\omega ^2}{\text{r}}$$

A. Material of the pulley

B. Material of the belt

C. Larger size of the driver pulley

D. Uneven extensions and contractions due to varying tension

A. All points of the disc have the same velocity

B. The centre of the disc has zero acceleration

C. The centre of the disc has centrifugal acceleration

D. The point on the disc making contact with the plane surface has zero acceleration

A. 12

B. 16

C. 25

D. 32

A. Longitudinal vibrations

B. Transverse vibrations

C. Torsional vibrations

D. None of these

A. Leads the sliding velocity vector by 90°

B. Lags the sliding velocity vector by 90°

C. Is along the sliding velocity vector

D. Leads the sliding velocity vector by 180°