A. Unsaturated polyester
B. Polypropylene
C. Polyurethane
D. Nylon-6
Related Mcqs:
- Steel rods are used in reinforced concrete to increase its ______________ strength?
A. Shear
B. Tensile
C. Compressive
D. None of these - Slow plastic deformation of metals under a constant stress is termed as _____________ failure?
A. Fatigue
B. Endurance
C. Creep
D. None of these - 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 - Alinco, which is a aluminium-cobalt-nickel steel, is used for making __________________?
A. Surgical instruments
B. Powerful magnets
C. Chemical equipments
D. Boiler tubes - Vycor, a widely used material for making ‘thermal wells’ in temperature measurement, is a_______________?
A. Cermet
B. Glass
C. Thermosetting plastic
D. Metallic alloy - Which of the following alloy steels has the energy saving properties making it suitable for use in electrical machines ?
A. Silicon steel
B. Chromium steel
C. Molybdenum steel
D. None of these - Babbitt metals used for making bearings are _________________?
A. Tin or lead based alloys
B. Short of antifrictional properties
C. Having homogenous microstructure
D. Yellow metals - Addition of 2% nickel in steel makes it suitable for making ___________________?
A. Electronic valves
B. Boiler plates, rivets etc.
C. Turbine blades
D. Connecting rod - 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. - 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