Rivets are generally specified by_______________?

A. Thickness of plates to be riveted
B. Length of rivet
C. Diameter of head
D. Nominal diameter

Which of the following is a permanent fastening ?

A. Bolts
B. Keys
C. Cotters
D. Rivets

If the tearing efficiency of a riveted joint is 75%, then the ratio of diameter of rivet to the pitch is equal to___________________?

A. 0.2
B. 0.25
C. 0.50
D. 0.6

Jam 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 in 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 spitted and bent in reverse direction at other end

Buttress threads are usually found on____________________?

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

A key capable of tilting in a recess milled out in a shaft is known as______________________?

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

A tapered key which fits in a keyway in the hub and is flat on the shaft, is known as___________________?

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

Turn buckle has____________________?

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

Elastic nut is a locking device in which__________________?

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

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