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.Management Sciences
Category: Machine Design
Rivets are generally specified by_______________?
A. thickness of plates to be riveted
B. length of rivet
C. diameter of head
D. nominal diameter
E. all of the above
The resultant axial load on a bolt depends on_______________?
A. initial tension
B. external load applied
C. relative elastic yielding (springness) of the bolt and the connected member
D. A. and B. above
E. A, B. and C. above
The function of cutting oil when threading a pipe is to___________________?
A. provide cooling action
B. lubricate the dies
C. help remove chips
D. all of the above
E. none of the above
Aircraft body is usually fabricated by_________________?
A. welding
B. precasting
C. rivetting
D. casting
E. unconventional methods
Machine 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 two parts
D. similar to stud
E. none of the above
Antifriction bearings are__________________?
A. sleeve bearings
B. hydrodynamic bearings
C. thin lubricated bearings
D. ball and roller bearings
E. none of the above
If d is the diameter of bolt hole then for a flanged pipe joint to be leak proof, the circumferential pitch of the bolts should be_________________?
A. lOVZ
B. 10VZtol5Vd
C. 15Vdto20VZ
D. 20Vdto30Vd
E. 30V5″to40Vd
The connecting rod bolts are tightened up with initial tension greater than the external load so that___________________?
A. joint may not open up
B. bolts are weakest elements
C. the resultant load on the bolt would not be affected by the external cyclic load
D. bolts will not loosen during service
E. none of the above
In standard taper roller bearings, the angle of taper of outer raceway is___________________?
A. 5°
B. 8°
C. 15°
D. 25°
E. 40°.
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