engineering materials MCQs – Page 5

Practise focused engineering materials questions with marked answers for exam preparation and subject revision.

engineering materials Mcqs
81. Which one of the following metals would work-harden more quickly than the others__________________?
comments icon0

A. silver

B. brass

C. lead

D. copper

E. aluminium

82. Melting point of iron is__________________?
comments icon0
A. 1539C

B. 1601C

C. 1489C

D. 1131C

E. 1712C

83. Which of the following alloys does not have copper as one of the constituents________________?
comments icon0

A. constantan

B. delta metal

C. nichrome

D. monel metal

E. silicon bronze

84. Which of the following element results in presence of free graphite in C.I_________________?
comments icon0

A. sulphur

B. carbon

C. silicon

D. phosphorous

E. manganese

85. Chilled cast iron has____________________?
comments icon0

A. none of the above is true

B. a low percentage of graphite

C. no graphite

D. a very high percentage of graphite

E. graphite as its basic constituent of composition

86. Carbon in iron is an example of__________________?
comments icon0
A. interstitial solid solution

B. none of the above.

C. substitutional solution

D. intermetallic compounds

E. all of the above

87. Super conduction by metals is observed in the temperature range of_________________?
comments icon0
A. below 10K

B. above 100K

C. above 1000C

D. around 0C

E. around 100C

88. Materials after cold working are subjected to following process to relieve stresses__________________?
comments icon0
A. annealing

B. hot working

C. tempering

D. normalising

E. special heat treatment

89. DuraJomin contains___________________?
comments icon0

A. 90% magnesium and 9% aluminium with some copper

B. 92.5% aluminium, 40% copper, 2% nickel, and 1.5% Mg

C. 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe

D. 10% aluminium and 90% copper

E. 94% aluminium and 6% tin

90. Iron is ____________________?
comments icon0

A. ferroelectric

B. dielectric

C. paramagnetic

D. none of the above

E. ferromagnetic
91. The elastic stress strain behaviour of rubber is_____________________?
comments icon0

A. no fixed relationship

B. non-linear

C. linear

D. unpredictable behaviour

E. plastic

92. White metal contains__________________?
comments icon0
A. alloy of tin, lead and cadmium

B. malleable cast iron and silver

C. silver and chromium

D. 88% copper and 10% tin and rest zinc

E. 63 to 67% nickel and 30% copper

93. The following types of materials are usually the most ductile__________________?
comments icon0
A. face-centred cubic lattice

B. hexagonal close-packed lattice

C. none of the above

D. all of the above

E. body-centred cubic lattice

94. The following element cant impart high strength at elevated temperature__________________?
comments icon0

A. silicon

B. nickel

C. none of the above

D. magnesium

E. manganese

95. Delta metal is an alloy of__________________?
comments icon0

A. iron, lead and tin

B. iron, nickel and copper

C. iron, aluminium and magnesium

D. copper, zinc and antimony

E. copper, zinc and iron
96. Slow plastic defomiation of metals under a constant stress is known as________________?
comments icon0
A. creep

B. endurance

C. non-plastic deformation

D. plastic deformation

E. fatigue

97. Cold rolled steel sheets contain carbon of the following order___________________?
comments icon0

A. 0.20%

B. 0.60%

C. 0.80%

D. 0.1%

E. 0.40%

98. Which of the following is used for bearing liner_______________?
comments icon0

A. gun metal

B. bell metal

C. bronze

D. babbit metal

E. brass

99. Depth of hardness of steel is increased by addition of_________________?
comments icon0
A. chromium

B. ell of the above

C. nickel

D. tungsten

E. vanadium

100. Alnico, an alloy used extensively for permanent magnets contains iron, nickel, aluminium and cobalt in the following ratio _____________________?
comments icon0

A. 50 : 20 : 10 : 20

B. 40 : 30 : 20 : 10

C. 50 : 10 : 20 : 20

D. 30 : 20 : 30 : 20

E. 50 : 20 : 20 : 10