A. square
B. acme
C. buttress
D. BSW
E. metric
A. is just sufficient to hold parts together
B. approaches yield point
C. is 50% of yield point
D. is about yield point divided by safety factor
E. none of the above
The connecting rod bolts are tightened up so that tightening stress _________________? Read More »
Machine Design A. self locking bolts
B. designed for shock load
C. used in aircraft application
D. provided with hexagonal depression in head
E. uniform strength bolts
Allen bolts are___________________? Read More »
Machine Design A. 18
B. 16
C. 20
D. 22
E. 14
I.S. specifies following total number of grades of tolerances__________________? Read More »
Machine Design A. direction of twist of wires in strands is opposite to the direction of twist of strands
B. direction of twist of wires and strands are same
C. wires in two adjacent strands are twisted in opposite direction
D. wires are not twisted
E. none of the above
In composite or reverse laid ropes___________________? Read More »
Machine Design A. whose upper deviation is zero
B. whose lower deviation is zero
C. whose lower as well as upper deviations are zero
D. does not exist
E. none of the above
Basic shaft is one__________________? Read More »
Machine Design A. yes
B. no
C. sometimes
D. rarely
E. very often
Whether any core is required in wire ropes________________? Read More »
Machine Design A. 5°
B. 8°
C. 15°
D. 25°
E. 40°.
A. same time to reach earth
B. times proportional to weight to reach earth
C. times inversely proportional to weight to reach earth
D. unpredictable
E. none of the above
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
E. none of the above
In oilness bearings________________? Read More »
Machine Design