Engineering Materials MCQs

Question 1

Monel metal is an alloy of

Accepted Answer

Nickel and copper

Answer

Nickel and chromium

Answer

Nickel, Chromium and iron

Answer

Copper and chromium

Question 2

Delta metal is an alloy of

Accepted Answer

Copper, zinc and iron

Answer

Iron, nickel and copper

Answer

Iron, lead and tin

Answer

Iron, aluminium and magnesium

Question 3

The alloy, mainly used for corrosion resistance in stainless steels is

Accepted Answer

Chromium

Answer

Silicon

Answer

Manganese

Answer

Carbon

Question 4

The loss of strength in compression with simultaneous gain in strength in tension due to overloading is known as

Accepted Answer

Boeschinger effect

Answer

Hysteresis

Answer

Creep

Answer

Visco elasticity

Question 5

In basic Bessemer process, the furnace is lined with

Accepted Answer

A mixture of tar and burnt dolomite bricks

Answer

Silica bricks

Answer

Both (A) and (B)

Answer

None of these

Question 6

Babbitt metal is a

Accepted Answer

Tin base alloy

Answer

Lead base alloy

Answer

Copper base alloy

Answer

Cadmium base alloy

Question 7

Which of the following iron exist between 910°C and 1403°C?

Accepted Answer

γ-iron

Answer

α-iron

Answer

β-iron

Answer

δ-iron

Question 8

In induction hardening ________ is high.

Accepted Answer

Frequency

Answer

Current

Answer

Voltage

Answer

Temperature

Question 9

According to Indian standard specifications, SG 400/15 means

Accepted Answer

Spheroidal graphite cast iron with minimum tensile strength 400 MPa and 15 percent elongation

Answer

Spheroidal graphite cast iron with B.H.N. 400 and minimum tensile strength 15 MPa

Answer

Spheroidal graphite cast iron with minimum compressive strength 400 MPa and 15 percent reduction in area

Answer

None of the above