Multiple Choice Questions (MCQ) with Answers on Mechanical Engineering
51-Twenty degree full depth involute profiled 21 tooth pinion and 39 tooth gear are in mesh. If the module is 5 mm, the centre distance between the gear pair will be:
(A) 110 mm
(B) 250 mm
(C) 280 mm
(D) 150 mm
52-Two mating spur gears have 40 and 120 teeth respectively. The pinion rotates at 900 rpm and transmits a torque of 25 Nm. The torque transmitted by the gear is:
(A) 75 Nm
(B) 750 Nm
(C) 40 Nm
(D) 400 Nm
53-The coupling used to connect two shafts with large angular misalignment is:
(A) Flange coupling
(B) Oldham’s coupling
(C) Hooke’s joint
(D) None of the above
54-The square hole on the Anvil is known as
(A) Hardie hole
(B) Horn
(C) Beak
(D) Punch hole
55-The cutting angle of cold chisel is
(A) 90°
(B) 30°
(C) 60°
(D) 45°
56-The following tool is used to enlarge and finish punched holes in hot metal
(A) Centre punch
(B) Drift
(C) Fuller
(D) Cold chisel
57-The cutting lip angle of a twist drill is
(A) 110°
(B) 59°
(C) 90°
(D) 118°
58-The property which enable metals to be drawn into wires
(A) Ductility
(B) Malleability
(C) Hardness
(D) Toughness
59-The percentage of carbon in low carbon steel is
(A) 0.7% to 1.5%
(B) 0.05% to 0.25%
(C) 15% to 20%
(D) 1.5% to 2%
60-The following tool is used to enlarge drilled hole
(A) Tap
(B) Reamer
(C) Die
(D) Scriber
ANSWERS:
51-(D), 52-(A), 53-(C), 54-(A), 55-(C), 56-(B), 57-(D), 58-(A), 59-(B), 60-(B)