JOIN ADRE 2.0 Telegram Group

Engineering Materials Quiz | Engineering Materials Multiple Choice Questions(MCQs) with Answers

Questions
61 Hardness of martensite is about
A RC 65
B RC 48
C RC 57
D RC 80

Answer: RC 65
62 The surface hardness of the following order is achieved by nitriding operation
A 600 VPN
B 1500 VPN
C 1000 to 1100 VPN
D 250 VPN

Answer: 1000 to 1100 VPN
Advertisement
Article and Schedule Quiz Start Test!

DOWNLOAD CURRENT AFFAIRS PDF FROM APP

63 Process of austempering results in
A formation of bainite structure
B carburised structure
C martenistic structure
D lamellar layers of carbide distributed throughout the structure

Answer: formation of bainite structure
64 The loss of strength in compression with simultaneous gain in strength in tension due to overloading is known as
A hysteresis
B creep
C visco elasticity
D Boeschinger effect

Answer: Boeschinger effect
65 Induction hardening is the process of
A hardening surface of workpiece to ob-tain hard and wear resistant surface
B heating and cooling rapidly
C increasing hardness throughout
D inducing hardness by continuous process

Answer: hardening surface of workpiece to ob-tain hard and wear resistant surface
66 Cyaniding is the process of
A dipping steel in cyanide bath
B reacting steel surface with cyanide salts
C adding carbon and nitrogen by heat treatment of steel to increase its surface hardness
D obtaining cyanide salts

Answer: adding carbon and nitrogen by heat treatment of steel to increase its surface hardness
67 Solder is an alloy consisting of
A tin, antimony, copper
B tin and copper
C tin and lead
D lead and zinc

Answer: tin and copper
68 By severely deforming a metal in a particular direction it becomes
A ductile
B malleable
C homogeneous
D anisotropic

Answer: anisotropic
69 Inconel is an alloy of
A nickel, chromium and iron
B nickel, copper
C nickel, chromium
D nickel, zinc

Answer: nickel, chromium and iron
70 An engineer’s hammer is made of
A cast iron
B forged steel
C mild steel
D high carbon steel

Answer: high carbon steel
71 A cold chisel is made of
A mild steel
B cast iron
C H.S.S.
D high carbon

Answer: high carbon
72 German silver is an alloy of
A silver and some impurities
B refined silver
C nickel, copper and zinc
D nickel and copper

Answer: nickel, copper and zinc
73 Basic constituents of Monel metal are
A nickel, copper
B nickel, molybdenum
C zinc, tin, lead
D nickel, lead and tin

Answer: nickel, copper
74 The basic constituents of Hastelloy are
A aluminium, copper etc.
B nickel, molybdenum etc.
C nickel, copper, etc.
D all of the above

Answer: nickel, molybdenum etc.
75 Hardness of lower bainite (tempered martensite) is about
A RC 65
B RC 48
C RC 57
D RC 80

Answer: RC 57
76 Which is false statement about normalizing. Normalizing is done to
A refine grain structure
B reduce segregation in casting
C improve mechanical properties
D induce stresses-

Answer: induce stresses-
77 Vanadium in high speed steels
A promotes decarburisation
B provides high hot hardness
C forms very hard carbides and thus in-creases wear resistance
D promotes retention of austenite

Answer: forms very hard carbides and thus in-creases wear resistance
78 Dislocations in materials refer to the following type of defect
A point defect
B line defect
C plane defect
D volumetric defect

Answer: line defect
79 An example of amorphous material is
A zinc
B lead
C silver
D glass

Answer: glass
80 Which is false statement about case hardening. Case hardening is done by
A electroplating
B cyaniding
C induction hardening
D nitriding

Answer: electroplating

ADRE 2.0 FULL LENGTH MOCK TEST

Take Mock Tests

Missiles Mock Test Start Test!
SSC MTS Mock Test Start Test
IBPS CLERK MOCK TEST Start Test
SSC MTS 2022 JULY 26 Shift 1 (ENGLISH) Start Test!
SSC GD Previous Year Paper 2021 Nov 17 Shift - I (Hindi) Start Test!
SSC CGL Tier - 1 PYP 2022 April 21 Shift- 1 (ENGLISH) Start Test!
MPSC PAPER I MOCK TEST 1 (ENGLISH) Start Test!
IB Security Assistant Mock test 1 (english) Start Test!
UP POLICE CONSTABLE MOCK TEST 1 Start Test!
DELHI POLICE CONSTABLE MOCK TEST 1 (HINDI) Start Test!
Advertisement
Assam Direct Recruitment Test Series