Multiple Choice Questions (MCQ) with Answers on Production Engineering
11-Extrusion force does not depend upon the
(A) extrusion ratio
(B) type of extrusion process
(C) material of the die
(D) working temperature
(Ans: C)
12-Magnesium is extruded and not rolled because
(A) It has a low melting point
(B) It has a low density
(C) Its reactivity with roll material is high
(D) It has a close-packed hexagonal strcuture
(Ans: A)
13-The approximately variation of the tool life exponent ānā of cemented carbide tools is
(A) 0.03 to 0.08
(B) 0.08 to 0.20
(C) 0.20 to 0.48
(D) 0.48 to 0.70
(Ans: C)
14-Which one of the following precesing sequences will give the best accuracy as well as surface finish.
(A) Drilling, Reaming, Grinding
(B) Drilling, Boring, Grinding
(C) Drilling, Reaming, Lapping
(D) Drilling, Reaming, Electroplating
(Ans: C)
15-The type of wear that occurs due to the cutting action of the particles in the cutting fluid is referred to as
(A) attritious wear
(B) diffusion wear
(C) erosive wear
(D) corrosive wear
(Ans: A)
16-For reaming operation of blind hole, the type of reamer required is
(A) straight flute reamer
(B) right hand spiral fluted reamer
(C) left hand spiral fluted reamer
(D) none of the above
(Ans: B)
17-Which one of the following grinding wheels (with grade, grit and bond) is suitable for cutter grinding
(A) K60 vitrified
(B) k320 vitrified
(C) T60 resinoid
(D) T320 resinoid
(Ans: A)
18-In parts produced by powder metallurgy process, pre-sintering is done to
(A) increase the toughness of the component
(B) increase the density of the component
(C) facilitate bonding of non-metallic partciles
(D) facilitate machining of the part
(Ans: A)
19-As the cutting speed increases
(A) more heat is transmitted to the workpiece and less heat is transmitted to the tool
(B) more heat is carried away by the chip and less heat is transmitted to the tool
(C) more heat is transmitted to both the chip and the tool
(D) more heat is transmitted to both the workpiece and the tool
(Ans: B)
20-Which of the following are produced by powder metallurgy process?
I-Cemented carbide dies, I-Porous bearings, III-Small magnets, IV-Parts with intricate shapes
Select the correct answer using the codes given below:
(A) I, II and III
(B) I, II and IV
(C) II, III and IV
(D) I, III and IV
(Ans: A)