Machine Design MCQ Questions & Answers | Mechanical Engineering

A. Has a head on one end and a nut fitted to the other

B. Has head at one end and other end fits into a tapped hole in the other part to be joined

C. Has both the ends threaded

D. Has pointed threads

A. A tapered key with head at one end

B. Fitted in pairs at right angles

C. Capable of tilting in a recess milled out in the shaft

D. All of the above

A. Similar to small size tap bolts except that a greater variety of shapes of heads are available

B. Slotted for a screw driver and generally used with a nut

C. Used to prevent relative motion between two parts

D. Similar to stud

A. Low starting and low running friction except at very high speeds

B. Accuracy of shaft alignment

C. Small overall dimensions

D. All of the above

A. Metric

B. Buttress

C. Square

D. NPT (national pipe threads).

A. $$\frac{{{\text{WD}}}}{{\pi {{\text{d}}^3}}} \times {\text{K}}$$

B. $$\frac{{2{\text{WD}}}}{{\pi {{\text{d}}^3}}} \times {\text{K}}$$

C. $$\frac{{4{\text{WD}}}}{{\pi {{\text{d}}^3}}} \times {\text{K}}$$

D. $$\frac{{8{\text{WD}}}}{{\pi {{\text{d}}^3}}} \times {\text{K}}$$

A. Bolt

B. Tap bolt

C. Stud

D. None of these

A. Mild steel

B. High speed steel

C. Stainless steel

D. Aluminium

A. Hollow saddle key

B. Hollow key

C. Soft key

D. None of these

A. Belts are available in sets

B. Only one belt cannot be fitted with other used belts

C. The new belt will carry more than its share and result in short life

D. New and old belts will cause vibrations