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-3

May 9, 2021

Show paginator

Hide paginator

25%

Page 1 of 4

1. Tungsten in steel

Improves wear resistance, cutting ability and toughness

Refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties

Gives ductility, toughness, tensile strength and anti-corrosion properties

Improves cutting ability and reduces hardenability

2. Which of the following represents the allotropic forms of iron?

Alpha iron and beta iron

Alpha iron, beta iron and gamma iron

Body centered cubic iron and face centered cubic iron

Alpha iron, gamma iron and delta iron

3. In compression, a prism of brittle material will break

By crushing into thousands of pieces

By shearing along oblique plane

By forming a bulge

In direction perpendicular to application of load

4. Large forgings, crank shafts, axles normally contain carbon up to

0.05 to 0.20%

0.55 to 1.0%

0.20 to 0.45%

0.45 to 0.55%

5. The property of a material which enables it to retain the deformation permanently, is called

Plasticity

Malleability

Brittleness

Ductility

6. Which of the following elements does not impart hardness to steel?

Silicon

Copper

Nickel

Chromium

7. According to Indian standard specifications, plain carbon steel designated by 40 C8 means that the carbon content is

0.35 to 0.45%

0.6 to 0.8%

0.4 to 0.6%

0.04%

8. Points of arrest for iron correspond to

There is nothing like points of arrest

Stages at which properties do not change with increase in temperature

Stages at which allotropic forms change

Stages at which further heating does not increase temperature for some time

9. The unit cells

All of the above

Contain the smallest number of atoms which when taken together have all the properties of the crystals of the particular metal

May be defined as the smallest parallelepiped which could be transposed in three coordinate directions to build up the space lattice

Have the same orientation and their similar faces are parallel

10. In low carbon steels, presence of small quantities of sulphur improves

Machinability

Weldability

Formability

Hardenability

Page 2 of 4

11. Alnico, an alloy used extensively for permanent magnets contains iron, nickel, aluminium and cobalt in the following ratio

40 : 30 : 20 : 10

50 : 20 : 10 : 20

50 : 20 : 20 : 10

30 : 20 : 30 : 20

12. There are fourteen atoms in a unit cell of

None of these

Face centered cubic space lattice

Close packed hexagonal space lattice

Body centered cubic space lattice

13. Which of the following metal shrinks most from molten state to solid state?

Admiralty metal

Cast steel

Brass

Cast iron

14. Taps dies and drills contain carbon

Above 2.2%

Above 1%

Below 1%

Below 0.5%

15. A specimen of aluminium metal when observed under microscope shows

F.C.C. crystal structure

H.C.P. structure

A complex cubic structure

B.C.C. crystalline structure

16. The main alloying elements high speed steel in order of increasing proportion are

Vanadium, chromium, tungsten

Tungsten, chromium, titanium

Chromium, titanium, vanadium

Tungsten, titanium, vanadium

17. Cementite consist of

13% ferrite and 87% cementite

6.67% carbon and 93.33% iron

13% cementite and 87% ferrite

13% carbon and 87% ferrite

18. The metal suitable for bearings subjected to heavy loads, is

White metal

Monel metal

Phosphor bronze

Silicon bronze

19. The percentage of carbon in grey iron castings usually varies between

1.2%

2.5 to 4.5%

0.5 to 1%

5 to 7%

20. The coke in the charge of blast furnace

Acts as an iron bearing mineral

Forms a slag by combining with impurities

Controls the grade of pig iron

Supplies heat to reduce ore and melt the iron

Page 3 of 4

21. Hematite iron ore contains iron about

70%

30%

45%

55%

22. Cobalt in steel

Improves wear resistance, cutting ability and toughness

Gives ductility, toughness, tensile strength and anti corrosion property

Refines grain size and produces less tendency to carburisation, improve corrosion and heat resistant proper ties

Improves cutting ability and reduce hardenability

23. Which of the following property is desirable in parts subjected to shock and impact loads?

Stiffness

Toughness

Brittleness

Strength

24. Which of the following property is desirable for materials used in tools and machines?

Malleability

Plasticity

Elasticity

Ductility

25. Ductility of a material can be defined as

Ability to undergo large permanent deformations in tension

Ability to undergo large permanent deformations in compression

Ability to recover its original form

All of the above

26. The tensile strength of wrought iron is maximum

Uniform in all directions

Perpendicular to lines of slag distribution

None of the above

Along the lines of slag distribution

27. Gamma-iron occurs between the temperature ranges of

600°C to 900°C

1400°C to 1530°C

400°C to 600°C

900°C to 1400°C

28. If a refractory contains high content of silicon, it means refractory is

Neutral

Basic

Acidic

Brittle

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

Stack

Throat

Hearth

Bosh

30. Brass contains

70 - 75% copper and rest tin

90% copper and 10% tin

70% copper and 30% zinc

85 - 92% copper and rest tin with little lead and nickel

Page 4 of 4

31. Which of the following statement is incorrect about duralumin?

It is lighter than pure aluminium

It has good machining properties

It can be forged

It is prone to age hardening

32. Corundum contains more than 95%

Steel

Al₂O₃

MgO

SiO₂

33. The hardness of steel primarily depends on

Heat treatment employed

Shape of carbides and their distribution in iron

Percentage of carbon

Percentage of alloying elements

34. The defect which takes place due to imperfect packing of atoms during crystallization is known as

Line defect

Point defect

Surface defect

None of these

35. The aluminium alloy made by melting aluminium with 2 to 10% magnesium and 1.75% copper is called

Y-alloy

Hindalium

Magnalium

Duralumin

36. The usual composition of a soldering alloy is

Tin, lead and small percentage of antimony

Tin and copper

Tin, lead and silver

Tin and lead

37. Which is false statement about normalizing? Normalizing is done to

Induce stresses

Refine grain structure

Reduce segregation in casting

Improve mechanical properties

38. The machinability of steel is improved by adding

Nickel

Sulphur, lead and phosphorus

Nickel and chromium

Chromium

39. The surface hardness of the following order is achieved by nitriding operation

1000 to 1100 VPN

600 VPN

250 VPN

1500 VPN

40. The ability of a material to resist fracture due to high impact loads, is called

Stiffness

Toughness

Strength

Brittleness

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