Skip to content

VideRime Online Learning

Search for:

Home
GK/GA MCQs
Questions?
- Ask Question
- Questions
Direct Links
Submit Article
Contact Us
Membership Registration
Login
Signup Now

Home
GK/GA MCQs
Questions?
- Ask Question
- Questions
Direct Links
Submit Article
Contact Us
Membership Registration
Login
Signup Now

Engineering Materials
0

Engineering Materials Practice Set-5

May 13, 2021

Show paginator

Hide paginator

25%

Page 1 of 4

1. Delta iron occurs at temperature of

Between 1400°C and 1539°C

Above melting point

Room temperature

Between 910°C and 1400°C

2. Mild steel belongs to the following category

Alloy steel

High carbon steel

Low carbon steel

Medium carbon steel

3. Which of the following constituents of steels is softest and least strong?

Austenite

Pearlite

Ferrite

Cementite

4. Foundry crucible is made of

Mild steel

Graphite

Lead

German silver

5. Which is false statement about properties of aluminium?

Modulus of elasticity is fairly low

Wear resistance is very good

Creep strength limits its use to fairly low temperatures

Fatigue strength is not high

6. In full annealing, the hypo eutectoid steel is heated from 30°C to 50°C above the upper critical temperature and then cooled

Any one of these

Suddenly in a suitable cooling medium

In still air

Slowly in the furnace

7. The molecules in a solid move

In a random manner

Back and forth like tiny pendulums

In circular motion

In a haphazard way

8. The percentage of carbon in low carbon steel is

0.05%

0.15%

0.5%

0.3%

9. Which is false statement about case hardening? Case hardening is done by

Nitriding

Induction hardening

Electroplating

Cyaniding

10. The ability of a material to resist softening at high temperature is known as

Hot tempering

Hot hardness

Fatigue

Creep

Page 2 of 4

11. Materials after cold working are subjected to following process to relieve stresses

Normalizing

Annealing

Tempering

Hot working

12. Neutral solution is one which has pH value

Less than 7

Greater than 7

pH value has nothing to do with neutral solution

Equal to 7

13. The ultimate tensile strength of low carbon steel by working at a high strain rate will

First increase and then decrease

Remain constant

Decrease

Increase

14. The coordination number of a face centered cubic space lattice is

Six

Eighteen

Twelve

Twenty

15. Malleability of a material can be defined as

All of the above

Ability to undergo large permanent deformations in tension

Ability to recover its original form

Ability to undergo large permanent deformations in compression

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

Reduce machinability

Increase wear resistance

Increase hardenability

Increase endurance strength

17. Which of the following metal is used in making electrical resistance wire for electric furnaces and heating elements?

Monel metal

Nichrome

Babbitt metal

Phosphor bronze

18. Recrystallization temperature is one

At which crystals grow bigger in size

At which crystals first start forming from molten metal when it is cooled

At which new spherical crystals first begin to form from the old deformed one when a strained metal is heated

At which change of allotropic form takes place

19. When low carbon steel is heated up to lower critical temperature

There is no change in grain size

The average grain size is a minimum

The grain size first increases and then decreases very rapidly

The grain size increases very rapidly

20. Slow plastic deformation of metals under a constant stress is known as

Endurance

Creep

Fatigue

Plastic deformation

Page 3 of 4

21. The stiffness is the ability of a material to resist

None of the above

Deformation under stress

Externally applied forces with breakdown or yielding

Fracture due to high impact loads

22. A material is known as allotropic or polymorphic if it

Exists in several crystal forms at different temperatures

Responds to heat treatment

Has its atoms distributed in a random pattern

Has a fixed structure under all conditions

23. The brown smoke during the operation of a Bessemer converter indicates that the

Silicon and manganese has burnt and carbon has started oxidizing

The brown smoke does not occur during the operation of a Bessemer converter

The converter must be titled to remove the contents of the converter

Air is burning out silicon and manganese

24. Which of the following is not the correct method of increasing fatigue limit?

Nitriding of surface

Shot peening

Cold working

Surface decarburisation

25. Following elements have face-centered cubic structure

All of the above

A iron (below 910°C and between 1400 to 1539°C), W

Mg, Zn, Ti, Zr, Br, Cd

Gamma iron (910° to 1400°C), Cu, Ag, Au, Al, Ni, Pb, Pt

26. The elastic stress strain behavior of rubber is

Linear

No fixed relationship

Nonlinear

Plastic

27. The property of a material essential for spring materials is

Resilience

Plasticity

Stiffness

Ductility

28. The steel widely used for motor car crankshafts is

Nickel steel

Silicon steel

Nickel-chrome steel

Chrome steel

29. Which of the following display properties similar to that of steel?

(A) Blackheart cast iron

(B) Whiteheart cast iron

(D) None of these

(C) Both (A) and (B)

30. The type of space lattice found in alpha-iron is

Face centered cubic space lattice

None of these

Close packed hexagonal space lattice

Body centered cubic space lattice

Page 4 of 4

31. Lead is poured into the joint between two pipes. These pipes may be made of

Cast iron

Vitrified clay

Concrete

Asbestos cement

32. Iron-carbon alloys containing 1.7 to 4.3% carbon are known as

Hypereutectic cast irons

None of these

Hypoeutectic cast irons

Eutectic cast irons

33. The charge is fed into the blast furnace through the

Stack

Throat

Bosh

Tyres

34. Isotropic materials are those which have the same

Electric and magnetic properties in all directions

Thermal properties in all directions

Elastic properties in all directions

Stresses induced in all directions

35. When elements like nickel, chromium, copper and molybdenum are added to the molten cast iron, it produces

Alloy cast iron

Malleable cast iron

White cast iron

Nodular cast iron

36. White cast iron has

High compressive strength

All of these

Low tensile strength

Carbon in the form of carbide

37. Closed packed hexagonal space lattice is found in

Gamma-iron, aluminium, copper, lead, silver and nickel

None of the above

Alpha-iron, tungsten, chromium and molybdenum

Zinc, magnesium, cobalt, cadmium, antimony and bismuth

38. Balls for ball bearings are made of

Mild steel

Stainless steel

Carbon-chrome steel

Cast iron

39. Tin base white metals are used where the bearings are subjected to

Elevated temperatures

Large surface wear

Light load and pressure

High pressure and load

40. Brass is an alloy of

None of these

Copper, tin and zinc

Copper and zinc

Copper and tin

Loading...

Share this Now with Friends:

WhatsApp
Telegram
More

Related

Tags: Engineering Materials Mechanical Engineering

VideRime

A Demrot is the founder of VideRime Online Learning, a leading engineering website. He did his BE Civil and M.Tech Structure from RGPV University, Bhopal and has been working as an Assistant Professor in a reputed college.

Leave a ReplyCancel reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Ads by Google

Recent Posts

Key Benefits of Phd in any Discipline
[PDF] Basic Civil Engineering PDF by S.S. Bhavikatti
Best 20 trending Topics for final year major projects in Civil Engineering
Explain different types of road bridges through neat sketches
What are the best video editing softwares
Explain the working of marshalling yard through neat diagram
Classification of Indian Railways in detail
What do you mean by coning of wheels? Also discuss its advantages.

Membership Registration

Secured Payment

Protection

DMCA.com Protection Status

VideRime.com is the leading online Learning portal. ©2026 All Rights Reserved.

Login Now

Google

OR

* Username

*

* Password

*

Remember me

Forgot Password

Don't have account? Register Now

VideRime Registration Form

* Username

*

* Username

*

* Last Name

*

* Email Address

*

* Confirm Email Address

*

* Password

*

Strength: Very Weak

(Use Cropper to set image and
use mouse scroller for zoom image.)

Already have an account? Login