Engineering Materials MCQs

Question 1

A small percentage of boron is added to steel in order to

Accepted Answer

Increase hardenability

Answer

Reduce machinability

Answer

Increase wear resistance

Answer

Increase endurance strength

Question 2

Steel contains

Accepted Answer

50% or more iron

Answer

80% or more iron

Answer

Alloying elements like chromium, tungsten nickel and copper

Answer

Elements like phosphorus, sulphur and silicon in varying quantities

Question 3

An eutectoid steel consists of

Accepted Answer

Wholly pearlite

Answer

Wholly austenite

Answer

Pearlite and ferrite

Answer

Pearlite and cementite

Question 4

Brass is an alloy of

Accepted Answer

Copper and zinc

Answer

Copper and tin

Answer

Copper, tin and zinc

Answer

None of these

Question 5

The transistor is made of

Accepted Answer

Germanium

Answer

Silver

Answer

Gold

Answer

Copper

Question 6

The portion of the blast furnace below its widest cross-section is called

Accepted Answer

Bosh

Answer

Hearth

Answer

Stack

Answer

Throat

Question 7

The silicon steel is widely used for

Accepted Answer

Generators and transformers in the form of laminated cores

Answer

Connecting rods

Answer

Cutting tools

Answer

Motor car crankshafts

Question 8

Connecting rod is usually made of

Accepted Answer

Medium carbon steel

Answer

Aluminium

Answer

Low carbon steel

Answer

High carbon steel

Question 9

Blast furnace is used to produce

Accepted Answer

Pig iron

Answer

Cast iron

Answer

Wrought iron

Answer

Steel