Category: Machine Design

A. to decrease length
B. to increase length
C. unaffected by length
D. other factors would decide same
E. none of the above

A. electroplating
B. polishing
C. coating
D. shot peening
E. heat treating

A. same
B. coarser
C. finer
D. very coarse
E. very fine

A. larger
B. smaller
C. equal
D. larger/smaller depending on diameter of spring coil
E. unpredictable

A. 1 : l
B. 2:1
C. 3 : 2
D. 2 : 3
E. 1 : 2

A. 30°
B. 45°
C. 60°
D. 80°
E. 85°.

A. metric
B. buttress
C. square
D. acme
E. NPT (national pipe threads)

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 be-tween parts
D. provided with detachable caps
E. similar to stud

A. wood-ruff key
B. feather key
C. flat saddle key
D. gib head key
E. hollow saddle key

A. provide cushioning effect
B. provide bearing area
C. absorb shocks and vibrations
D. provide smooth surface in place of rough surface
E. act as a locking device