Category: Machine Design

A. 10°
B. 20°
C. 30°
D. 45°
E. 60°.

A. reducing stress concentration
B. ease of manufacture
C. safety
D. fullering and caulking
E. all of the above

A. variation in properties of material from point to point in a member
B. pitting at’points or areas at which loads on a member are applied
C. abrupt change of section
D. all of the above
E. none of the above

A. Brinell
B. Rockwell
C. Vicker
D. Shore’s sceleroscope
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

A. is greatly decreased by poor surface conditions
B. remains same irrespective of surface conditions
C. depends mainly on core composition
D. is dependent upon yield strength of material
E. none of the above

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

A. shank
B. head
C. in the middle
D. at the thread
E. anywhere in the bolt

A. ratio of coil diameter to wire diameter
B. load required to produce unit deflection
C. its capability of storing energy
D. its ability to absorb shocks
E. none of the above

A. finishing and polishing
B. shot-peening
C. decarburisation
D. electroplating
E. all of the above”.