Ability of a material to absorb energy in deformation in the plastic range is characterised as its____________________?
A. Ductility
B. Toughness
C. Creep
D. Resilience
Materials and Construction
Austenitic manganese steel used for making jaws of crushing machines contains about ______________ percent manganese?
Austenitic manganese steel used for making jaws of crushing machines contains about ______________ percent manganese?
A. 1.5-2
B. 3.5-4.5
C. 7-9
D. 12-14
Chromel (Nichrome) is an alloy of_____________________?
Chromel (Nichrome) is an alloy of_____________________?
A. Chromium and molybdenum
B. Nickel and chromium
C. Molybdenum and nickel
D. Chromium and aluminium
Babbitt metal used for making bearings should have_____________________?
Babbitt metal used for making bearings should have_____________________?
A. High co-efficient of friction between journal and bearing
B. Ability to retain lubricant on its surface
C. Low co-efficient of friction between journal and bearing
D. Both B. & C.
Pick the odd man out of the following?
Pick the odd man out of the following?
A. Calorising
B. Pack carburising
C. Nitriding
D. Cyaniding
A material no longer behaves elastically beyond_________________?
A material no longer behaves elastically beyond_________________?
A. Plastic limit
B. Limiting load
C. Elastic limit
D. Breaking load
Glass lined vessels are not used for handling__________________?
Glass lined vessels are not used for handling__________________?
A. Dilute H2SO4
B. Dilute HNO3
C. Dilute HCI
D. Hydrofluoric acid
Which of the following is the most elastic material ?
Which of the following is the most elastic material ?
A. Plastic
B. Glass
C. Steel
D. Rubber
Materials having _____________ lattice structure are usually most ductile?
Materials having _____________ lattice structure are usually most ductile?
A. FCC
B. BCC
C. HCP
D. Cubic
____________ alloys have the highest specific strength of all the structural materials out of the following?
____________ alloys have the highest specific strength of all the structural materials out of the following?
A. Magnetic steel
B. Titanium
C. Chromium
D. Magnesium