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 is used for lubrication
E. none of the above
Related Mcqs:
- Antifriction bearings are__________________?
A. sleeve bearings
B. hydrodynamic bearings
C. thin lubricated bearings
D. ball and roller bearings
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°. - For tight leakage joints, following type of thread is best suited ____________________?
A. metric
B. buttress
C. square
D. acme
E. NPT (national pipe threads) - Stress concentration in static loading is_________________?
Which is correct statement ?
A. very serious in brittle materials and less serious in ductile materials
B. very serious in ductile materials and less serious in brittle materials
C. equally serious in both types of materials
D. seriousness would depend on other factors
E. none of the above - 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 crest diameter of a screw thread is same as _____________________?
A. major diameter
B. minor diameter
C. pitch diameter
D. core diameter
E. none of the above - The edges of a boiler plate are bevelled to an angle of______________?
A. 30°
B. 45°
C. 60°
D. 80°
E. 85°. - Silver-based solder is used for__________________?
A. flaring
B. brazing
C. soft soldering
D. fusion welding
E. none of the above - Basic shaft is one__________________?
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 - If threads on a bolt are left hand, threads on nut will be_____________________?
A. right hand with same pitch
B. left hand with same pitch
C. could be left or right hand
D. right hand with fine pitch
E. left hand with fine pitch
