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
Related Mcqs:
- 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 - Which of the following is not correct procedure to increase the fatigue limit_______________?
A. cold working
B. shot peening
C. surface decarburisation
D. under-stressing
E. all of the above - If a load W is applied instantaneously on a bar; then the stress induced in bar will___________________?
A. be independent of ratio of mass of load W to mass of bar (y)
B. increase with increase in y
C. decrease with decrease in y
D. depend on other considerations
E. none of the above - Residual stress in materials_________________?
A. acts when external load is applied
B. becomes zero when external load is removed
C. is independent of external loads
D. is always harmful
E. is always beneficial - At low temperatures (say 75°C) the notched-bar impact value of steel____________________?
A. increases markedly
B. decreases markedly
C. remains same
D. depends on heat treatment carried out
E. none of the above - Shear stress theory is applicable for____________________?
A. ductile fnaterials
B. brittle materials
C. elastic materials
D. all of the above
E. none of the above - Taper on the cotter and slot is provided_________________?
A. on both the sides
B. on one side only
C. on none of the sides
D. may be provided anywhere
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 - In cross or regular lay ropes_________________?
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 - Castle nut is a locking device in which__________________?
A. one smaller nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming
B. a slot is cut partly is middle of nut and then slot reduced by tightening a screw
C. a hard fiber or nylon cotter is recessed in the nut and becomes threaded as the nut is screwed on the bolt causing a tight grip
D. through slots are made at top and a cotter pin is passed through these and a hole in the bolt, and cotter pin spitted and bent in reverse direction at other end
E. none of the above.
