A. Hastelloy
B. Duriron
C. Monel
D. Inconel
Which of the following is an alloy of nickel and copper ? Read More »
Materials and Construction A. Inconel
B. Hastelloys
C. Nimonics
D. Babbitt metal
Which of the following is not a nickel based alloy ? Read More »
Materials and Construction A. Is in the form of free Si
B. Indicates that steel is not deoxidised properly
C. Decreases the blow holes formation tendency in castings
D. None of these
Presence of silicon in steel_____________________? Read More »
Materials and Construction A. High speed
B. Silicon
C. Molybdenum
D. Tungsten
‘Hypersil’ is a ______________ steel? Read More »
Materials and Construction A. Aluminium, mild steel, stainless steel, concrete & tin
B. Copper, cast iron & high silicon iron (14% Si)
C. Rubber (butyl and hard), silicone rubber & Teflon
D. Glass, graphite, porcelain & stoneware
H2SO4 (< 50% concentration) is corrosive to_________________? Read More »
Materials and Construction A. High strength to weight ratio
B. Low temperature strength properties
C. Its ability to be cast, rolled, forged & stamped
D. High strength and corrosion & oxidation-resistance at elevated temperature
A. High ductility
B. High malleability
C. Very high tensile strength
D. Its elastic limit very close to ultimate breaking strength
Cast iron has____________________? Read More »
Materials and Construction A. Unsaturated polyester
B. Polypropylene
C. Polyurethane
D. Nylon-6
The most commonly used resin for making reinforced plastic is___________________? Read More »
Materials and Construction A. Used for making axle & shafts of aeroplanes, automobiles and locomotives
B. Having poor fatigue resistance
C. Having poor toughness
D. Not helpful in producing cleaner steel due to oxidising action of vanadium
A. Are exemplified by clay and mica
B. Are poor electrical conductors due to lack of free electrons
C. Never exhibit polymorphism
D. All A., B. and C.
Ceramic materials__________________? Read More »
Materials and Construction