Machine Design MCQ Questions & Answers | Mechanical Engineering

A. 2

B. 4

C. 8

D. 16

A. The oil film pressure is generated only by the rotation of the journal

B. The oil film is maintained by supplying oil under pressure

C. Do not require external supply of lubricant

D. Grease required to be applied after some intervals

A. $${\text{p}} = {\text{D}}\sin \frac{{{{90}^ \circ }}}{{\text{T}}}$$

B. $${\text{p}} = {\text{D}}\sin \frac{{{{120}^ \circ }}}{{\text{T}}}$$

C. $${\text{p}} = {\text{D}}\sin \frac{{{{180}^ \circ }}}{{\text{T}}}$$

D. $${\text{p}} = {\text{D}}\sin \frac{{{{360}^ \circ }}}{{\text{T}}}$$

A. 5°

B. 8°

C. 15°

D. 25°

A. Longitudinal stress

B. Circumferential stress

C. Shear stress

D. None of these

A. Longitudinal stress

B. Shear stress

C. Circumferential stress

D. None of these

A. Transmits

B. Does not transmit

C. Either A or B

D. None of these

A. More

B. Less

C. Same

D. More or less depending on quantum of load

A. Ring nut

B. Castle nut

C. Sawn nut

D. Jam nut

A. Friction angle is less than helix angle

B. Friction angle is more than helix angle

C. Friction angle is equal to helix angle

D. Efficiency of screw is 100%