- (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
- (E) raising exhaust pressure
Exam preparation MCQs with answers
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- (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
- (E) none of the above
- (A) thickness of plates to be riveted
- (B) length of rivet
- (C) diameter of head
- (D) nominal diameter
- (E) all of the above
- (A) bolts
- (B) keys
- (C) cotters
- (D) rivets
- (E) screws
- (A) 0.2
- (B) 0.25
- (C) 0.50
- (D) 0.6
- (E) 0.75
- (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
- (E) none of the above
- (A) screw cutting lathes
- (B) feed mechanisms
- (C) spindles of bench vices
- (D) screw jack
- (E) railway carriage couplings
- (A) wood-ruff key
- (B) feather key
- (C) flat saddle key
- (D) gib head key
- (E) hollow saddle key
- (A) wood-ruff key
- (B) feather key
- (C) flat saddle key
- (D) gib head key
- (E) hollow saddle key
- (A) 180°
- (B) 125°
- (C) 235°
- (D) 200°
- (E) 275°

