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
A. metric
B. buttress
C. acme
D. square
E. BSW
A. metric
B. square
C. buttress
D. acme
E. BSW
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- is passed through these and a hole in the bolt, and cotter splitted and bent in reverse direction at the other end
E. none of the above
A. provide cooling action
B. lubricate the dies
C. help remove chips
D. all of the above
E. none of the above
A. metric
B. buttress
C. square
D. acme
E. NPT (national pipe threads)
A. lighter and easier to handle
B. greater shock absorption
C. smoother inside walls
D. all of the above
E. none of the above
A. butt weld
B. fillet weld
C. sleeve weld
D. socket weld
E. tube weld
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 is passed through these and a hole in the bolt, and cotter spitted and bent in reverse direction at other end
E. none of the above.
A. to produce torque
B. for speed reduction
C. to obtain variable speeds
D. to increase efficiency of system
E. to damp out vibrations