Eutectoid steel contains following percentage of carbon_______________?
A. 0.02%
B. 0.3%
C. 0.63%
D. 0.8%
E. 1.2%.
Month: January 2019
Basic constituents of Monel metal are _________________?
Basic constituents of Monel metal are _________________?
A. nickel, copper
B. nickel, molybdenum
C. zinc, tin, lead
D. nickel, lead and tin
E. none of the above
Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is__________________?
Surveying tapes are made of a material having low coefficient of expansion and enough strength. The alloy used is__________________?
A. silver metal
B. duralumin
C. Hastelloy
D. monel metal
E. invar
An engineer’s hammer is made of___________________?
An engineer’s hammer is made of___________________?
A. cast iron
B. forged steel
C. mild steel
D. high carbon steel
E. H.S.S
By severely deforming a metal in a particular direction it becomes _________________?
By severely deforming a metal in a particular direction it becomes _________________?
A. ductile
B. malleable
C. homogeneous
D. isotropic
E. anisotropic
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.