A. nickel
B. chromium
C. tungsten
D. vanadium
E. ell of the above
Depth of hardness of steel is increased by addition of_________________? Read More »
Engineering Materials A. flywheel of steam engine
B. cast iron pipes”
C. cycle chains
D. gas turbine blades
E. piston I.C. engine
In which of the following cases, consideration of creep is important_________________? Read More »
Engineering Materials A. 0.025%
B. 0.26%
C. 0.8%
D. 1.25%
E. 1.7%.
Maximum percentage of carbon in austenite is______________? Read More »
Engineering Materials A. amount of carbon it contains
B. the shape and distribution of the car-bides in iron
C. method of fabrication
D. contents of alloying elements
E. the quality of ore from which it is made
Hardness of steel depends on_________________? Read More »
Engineering Materials A. malleable iron
B. nodular iron
C. spheroidal iron
D. grey iron
E. none of the above
Annealing of white cast iron results in production of_________________? Read More »
Engineering Materials A. 80% or more iron
B. 50% or more iron
C. alloying elements like chromium, tungsten nickel and copper
D. elements like phosphorus, sulphur and silicon in varying quantities
E. high quantities of sulphur
Steel contains____________________? Read More »
Engineering Materials A. tenacity
B. brittleness
C. plasticity
D. corrosion resistance
E. hardness
A. free carbon
B. graphite
C. cementite
D. white carbon
E. ferrite
White cast iron contains carbon in the form of__________________? Read More »
Engineering Materials A. no graphite
B. a very high percentage of graphite
C. a low percentage of graphite
D. graphite as its basic constituent of composition
E. none of the above is true
Chilled cast iron has____________________? Read More »
Engineering Materials A. paramagnetic
B. ferromagnetic
C. ferroelectric
D. dielectric
E. none of the above
Iron is ____________________? Read More »
Engineering Materials