Search
.Management Sciences
Category: Machine Design
For applications involving high stresses in one direction only the following type of thread would be best suited______________________?
A. ISO metric thread
B. acme thread
C. square thread
D. buttress thread
E. British Association thread
A tapered key which fits in a keyway in the hub and is flat on the shaft, is known as___________________?
A. wood-ruff key
B. feather key
C. flat saddle key
D. gib head key
E. hollow saddle key
Other method of reducing shock load in the above case can be_________________?
A. to decrease length
B. to increase length
C. unaffected by length
D. other factors would decide same
E. none of the above
The fatigue life of a part can be improved by_____________________?
A. electroplating
B. polishing
C. coating
D. shot peening
E. heat treating
The pitch of threads on a Jock nut in comparison to pitch of nut is_________________?
A. same
B. coarser
C. finer
D. very coarse
E. very fine
The shearing stresses in the inner face as compared to outer face of the wire in a heavy close coiled spring is_________________?
A. larger
B. smaller
C. equal
D. larger/smaller depending on diameter of spring coil
E. unpredictable
The ultimate strength of steel in tension in comparison to shear is in the ratio of__________________?
A. 1 : l
B. 2:1
C. 3 : 2
D. 2 : 3
E. 1 : 2
The edges of a boiler plate are bevelled to an angle of______________?
A. 30°
B. 45°
C. 60°
D. 80°
E. 85°.
For tight leakage joints, following type of thread is best suited ____________________?
A. metric
B. buttress
C. square
D. acme
E. NPT (national pipe threads)
Cap screws are___________________?
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
Recent Comments