Carbon supply in pack carburising process is in the form of Charcoal Graphite Hydrocarbon oil Calcium carbide TRUE ANSWER : ? YOUR ANSWER : ?
Duralumin is an alloy of Aluminium, nickel and silicon None of these Aluminium, copper and manganese Aluminium and nickel TRUE ANSWER : ? YOUR ANSWER : ?
Sulphuric acid is mixed with ground phosphate rock (to produce phosphoric acid) in a steel digestor lined with Acidic refractory Karbate Lead or acid-proof bricks Rubber TRUE ANSWER : ? YOUR ANSWER : ?
Babbit metals used for making bearings are Yellow metals Tin or lead based alloys Having homogenous microstructure Short of antifrictional properties TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following has the highest compressive strength? Mild steel Cast iron Wrought iron High carbon steel TRUE ANSWER : ? YOUR ANSWER : ?
A bearing metal should not have Low co-efficient of friction Low thermal conductivity Enough plasticity High toughness TRUE ANSWER : ? YOUR ANSWER : ?
The softest material in Mho's scale (for measuring hardness) is Rubber None of these Talc Gypsum TRUE ANSWER : ? YOUR ANSWER : ?
The maximum percentage of chromium that can be added to steel is about 30 18 24 12 TRUE ANSWER : ? YOUR ANSWER : ?
Cast iron is having very high All of these Ductility Proximity between its elastic limit and ultimate breaking strength Tensile strength TRUE ANSWER : ? YOUR ANSWER : ?
Tubes of multiple effect evaporator used for concentration of sugar cane juice are made of Copper Brass Nickel Stainless steel TRUE ANSWER : ? YOUR ANSWER : ?