Mechanical Engineering MCQs

A. Provide cooling action
B. Lubricate the dies
C. Help remove chips
D. All of the above

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 in middle of nut and then slot reduced by tightening 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 splitted and bent in reverse direction at the other end

A. Metric
B. Square
C. Buttress
D. Acme

A. Metric
B. Buttress
C. Acme
D. Square

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

A. One small nut is tightened over main nut and main nut tightened against smaller one by loosening, creating friction jamming
B. A slot is cut partly in middle of nut and then slot reduced by tightening a screw
C. Hard fiber or nylon cotter is recessed in the nut and becomes threaded as the nut is stewed 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 splitted and bent in reverse direction at other end

A. Right hand threads on bout ends
B. Left hand threads on both ends
C. Left hand threads on one end and right hand threads on other end
D. No threads

A. Wood-ruff key
B. Feather key
C. Flat saddle key
D. Gib head key

A. Wood-ruff key
B. Feather key
C. Flat saddle key
D. Gib head key

A. screw cutting lathes
B. feed mechanisms
C. spindles of bench vices
D. screw jack