By severely deforming a metal in a particular direction it becomes _________________?
A. ductile
B. malleable
C. homogeneous
D. isotropic
E. anisotropic
Engineering Materials
Cyaniding is the process of________________?
Cyaniding is the process of________________?
A. dipg 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
E. making corrosion resistant steel
The loss of strength in compression with simultaneous gain in strength in tension due to overloading is known as________________?
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
E. inelasticity
The surface hardness of the following order is achieved by nitriding operation__________________?
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
E. 2000 VPN
Weld decay is the phenomenon found with _________________?
Weld decay is the phenomenon found with _________________?
A. cast iron
B. mild steel
C. non-ferrous materials
D. wrought iron
E. stainless steel
Hardness of upper bainite (acicular structure) is about___________________?
Hardness of upper bainite (acicular structure) is about___________________?
A. RC 65
B. RC 48
C. RC 57
D. RC 80
E. RC 32.
Brass (alloy of copper and zinc) is an example of__________________?
Brass (alloy of copper and zinc) is an example of__________________?
A. substitutional solid solution
B. interstitial solid solution
C. intermetallic compounds
D. all of the above
E. none of the above
Argentite is the principal ore or raw material for _________________?
Argentite is the principal ore or raw material for _________________?
A. aluminium
B. tin
C. zinc
D. lead
E. silver
Which is false statement about normalizing. Normalizing is done to _________________?
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-
E. relieve internal stresses
Amorphous material is one___________________?
Amorphous material is one___________________?
A. in which atoms align themselves in a geometric pattern upon solidification
B. in which there is no definite atomic structure and atoms exist in a random pattern just as in a liquid
C. which is not attacked by phosphorous
D. which emits fumes on melting
E. none of the above