A. Produced by adding 10-20% steel to the cupola charge
B. Stronger than cast iron
C. Both A. and B.
D. Neither A. nor B.
‘Semi steel’ is__________________? Read More »
Materials and Construction A. Aluminium
B. Noble metals (Ag, Pt, Au)
C. Zinc
D. Alkali metals (K, Na, Li)
Which one occupies the lowermost position in the electromotive series of metals ? Read More »
Materials and Construction A. Have lower corrosion resistance
B. Are harder to fabricate
C. Are less ductile and hence less suitable for cold pressing
D. All A., B. and C.
Ferric stainless steels compared to austenitic stainless steels________________? Read More »
Materials and Construction A. Fatigue resistance
B. Tensile strength
C. Creep resistance
D. All A., B. & C.
Reduction in the grain size reduces the _______________ of the material? Read More »
Materials and Construction A. White cast
B. Grey cast
C. Wrought
D. None of these
______________ iron is produced, when molten pig iron is allowed to cool gradually? Read More »
Materials and Construction A. Acidic refractory
B. Rubber
C. Karbate
D. Lead or acid-proof bricks
A. 3.8
B. 5.2
C. 4.8
D. 4.3
Maximum carbon content in cast iron is ______________ percent? Read More »
Materials and Construction A. Used for making shock resisting parts
B. Manufactured in cupola and is brittle
C. Having compressive strength more than its tensile strength
D. All A., B. & C.
Cast iron is__________________? Read More »
Materials and Construction A. Acidic refractory
B. Rubber
C. Karbate
D. Lead or acid proof bricks
A. Ductility
B. Tensile strength
C. Hardness
D. None of these
Manganese in steel affects its__________________? Read More »
Materials and Construction