Engineering Materials MCQ Question with Answer

Engineering Materials MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

Question No : 22
Lead is poured into the joint between two pipes. These pipes may be made of

Cast iron

Vitrified clay

Asbestos cement

Concrete

Question No : 23
The silicon steel is widely used for

Connecting rods

Cutting tools

Generators and transformers in the form of laminated cores

Motor car crankshafts

Question No : 24
Corundum contains more than 95%

Steel

Al₂O₃

SiO₂

MgO

Question No : 25
Which of the following statement is correct?

The product produced by blast-furnace is called cast iron

The pig iron is the name given to the product produced by cupola

The cast iron has high tensile strength

The chilled cast iron has no graphite

Question No : 26
Recrystallisation temperature can be lowered by

Purification of metal

Grain refinement

Working at lower temperature

All of the above

Question No : 27
The machinability of aluminium increases when __________ is added to aluminium.

Copper

Magnesium

Silicon

Lead and bismuth

Question No : 28
Dye penetrant method is generally used to locate

Core defects

Surface defects

Superficial defects

Temporary defects