Search
.Management Sciences
Category: Materials and Construction
Bearings subjected to light load are made of________________?
0
A. White metal
B. Phosphorous bronze
C. Monel
D. Silicon bronze
Creep is not exhibited at low temperature by _____________________?
A. Rubber
B. Acrylics
C. Lead
D. Plastics
Addition of 2% nickel in steel makes it suitable for making ___________________?
A. Electronic valves
B. Boiler plates, rivets etc.
C. Turbine blades
D. Connecting rod
Which of the following is not a nickel based alloy ?
A. Inconel
B. Hastelloys
C. Nimonics
D. Babbitt metal
Visco-elastic behaviour of materials which is time dependent is common in______________?
A. Plastics
B. Crystalline solid
C. Non-crystalline solids
D. Non-crystalline organic polymer
Presence of silicon in steel_____________________?
A. Is in the form of free Si
B. Indicates that steel is not deoxidised properly
C. Decreases the blow holes formation tendency in castings
D. None of these
Which of the following is the most prone to atmospheric corrosion ?
A. Silver
B. Iron
C. Tin
D. Copper
Which of the following has a very high carbide forming tendency in steels ?
A. Silicon
B. Chromium
C. Nickel
D. Vanadium
The heat treatment process to which castings and the steel balls produced by cold heading are subjected is____________________?
A. Tempering
B. Normalising
C. Annealing
D. None of these
A hardness depth of about 3 mm can be achieved by induction hardness in ______________ seconds?
A. 5
B. 100
C. 250
D. 500
Recent Comments