A. Increases very quickly
B. Decreases very quickly
C. Increases in proportion to stress
D. Decreases in proportion to stress
Related Mcqs:
- 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 - The behaviour of visco-elastic material is time dependent. This behaviour is common in _____________ materials?
A. Non-crystalline solid
B. Crystalline
C. Rubbery
D. Non-crystalline organic polymeric - An elastic behaviour of materials is expressed in terms of_______________?
A. Hysteresis loop area
B. Stress-strain curve
C. Relaxation time
D. None of these - Which of the following has the least value of ultimate tensile strength (UTS) ?
A. Medium carbon steel
B. High carbon steel
C. Cast iron
D. Wrought iron - Which one has the maximum tensile strength out of the following ?
A. Nodular cast iron
B. Pig iron
C. White cast iron
D. Grey cast iron - _____________________ is used for determining the tensile strength of steels ?
A. Hydraulic press
B. Universal testing machine
C. Mechanical press
D. None of these - Non-ferrous metals and hard steels do not exhibit a definite yield point, when pulled in the testing machine and hence for these cases, a better measure of their elastic properties is defined by the ______________ stress?
A. Ultimate
B. Yield point
C. Proof
D. None of these - The ability of a material to absorb energy in the elastic range is a measure of its __________________?
A. Toughness
B. Resilience
C. Malleability
D. Brittleness - Which of the following is the most elastic material ?
A. Plastic
B. Glass
C. Steel
D. Rubber - Which of the following materials may prove unsuitable for handling acetic acid (glacial & anhydrous) at 40°C ?
A. Silicone rubber, teflon, porcelain and wood
B. Nickel, monel, stainless steel and graphite
C. Aluminium, copper, high silicon iron
D. Brass, cast iron, mild steel and tin
