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.Management Sciences
Category: Machine Design
The connecting rod bolts are tightened up so that tightening stress _________________?
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
Endurance limit or fatigue limit is the maximum stress that a member can withstand for an infinite number of load applications without failure when subjected to________________?
A. dynamic loading
B. static loading
C. combined static and dynamic loading
D. completely reversed loading
E. all of the above
Cold working________________?
A. increases the fatigue strength
B. decreases the fatigue strength
C. has no influence on fatigue strength
D. alone has no influence on fatigue strength
E. none of the above
Ball bearing type screws are found in following application_____________________?
A. screw jack
B. aeroplane engines
C. crane
D. steering mechanism
E. bench vice
In Vicker’s hardness testing, the pyramid indentor apex is__________________?
A. 40°
B. 122°
C. 136°
D. 152°
E. 161°.
When a close coiled helical spring is compressed, its wire is subjected to________________?
A. tension
B. shear
C. compression
D. all of the above
E. none of the above
A stud________________________?
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
E. requires locking nuts
A bench vice has following type of threads____________________?
A. metric
B. square
C. buttress
D. acme
E. BSW
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