Applications in which stresses are encountered in one direction only uses following type of threads____________________?
(A) metric
(B) buttress
(C) acme
(D) square
(D) BSW
A bench vice has following type of threads____________________?
(A) metric
(B) square
(C) buttress
(D) acme
(D) BSW
Split 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 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
(D) none of the above
The function of cutting oil when threading a pipe is to___________________?
(A) provide cooling action
(B) lubricate the dies
(C) help remove chips
(D) all of the above
(D) none of the above
For tight leakage joints, following type of thread is best suited ____________________?
(A) metric
(B) buttress
(C) square
(D) acme
(D) NPT (national pipe threads)
A tube has the following advantage over pipe_________________?
(A) lighter and easier to handle
(B) greater shock absorption
(C) smoother inside walls
(D) all of the above
(D) none of the above
A backing ring is used inside the pipe joint when making a___________________?
(A) butt weld
(B) fillet weld
(C) sleeve weld
(D) socket weld
(D) tube weld
Compression ratio of LC. engines is ___________________?
(A) the ratio of volumes of air in cylinder before compression stroke and after compression stroke
(B) volume displaced by piston per stroke and clearance volume in cylinder
(C) ratio of pressure after compression and before compression
(D) swept volume/cylinder volume
(D) cylinder volume/swept volume
Supercharging is the process of_____________________?
(A) supplying the intake of an engine with air at a density greater than the density of the surrounding atmosphere
(B) providing forced cooling air
(C) injecting excess fuel for raising more load
(D) supplying compressed air to remove combustion products fully
(D) raising exhaust pressure
The designation M 33 x 2 of a bolt means___________________?
(A) metric threads of 33 nos in 2 cm.
(B) metric threads with cross-section of 33 mm
(C) metric threads of 33 mm outside diameter and 2 mm pitch
(D) bolt of 33 mm nominal diameter having 2 threads per cm
(D) none of the above