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.Management Sciences
Category: Engineering Materials
Which of the following pipes is least corrosion resistant__________________?
A. brass
B. mild steel
C. cast iron
D. wrought iron
E. copper
Permalloy is a___________________?
A. kind of stainless steel
B. none ferrous alloy
C. polymer
D. cutting tool material
E. nickel and iron alloy having high permeability
Compressive strength of grey cast iron in tonnes/cm is of the order of___________________?
A. 3- 5
B. 5-7
C. 7-10
D. 10-15
E. 15-22
In mottled cast iron, carbon is available in__________________?
A. free form
B. combined form
C. nodular form
D. flat form
E. partly in free and partly in combined state
Cold rolled steel sheets contain carbon of the following order___________________?
A. 0.1%
B. 0.2%
C. 0.4%
D. 0.6%
E. 0.8%
Mild steel belongs to the following category___________________?
A. low carbon steel
B. medium carbon steel
C. high carbon steel
D. alloy steel
E. special steel
Delta metal is an alloy of__________________?
A. copper, zinc and iron
B. iron, nickel and copper
C. iron, lead and tin
D. iron, aluminium and magnesium
E. copper, zinc and antimony
Inconel is an alloy of___________________?
A. nickel, chromium and iron
B. nickel, copper
C. nickel, chromium
D. nickel, zinc
E. nickel, lead
In which of the following cases, consideration of creep is important_________________?
A. flywheel of steam engine
B. cast iron pipes”
C. cycle chains
D. gas turbine blades
E. piston I.C. engine
Free cutting steels_____________________?
A. are used where ease in machining is the criterion
B. contain carbon in free form
C. require least cutting force
D. do not exist
E. can be cut freely even under adverse conditions
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