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-1

May 7, 2021

Show paginator

Hide paginator

25%

Page 1 of 4

1. Elinvar, an alloy used in precision instruments, hair springs for watches, etc. contains the following element as principal alloying element

Nickel

Copper

Iron

Aluminium

2. Body centered cubic space lattice is found in

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

Alpha iron, tungsten, chromium and molybdenum

Zinc, magnesium, cobalt, cadmium, antimony and bismuth

None of the above

3. The percentage carbon content in wrought iron is about

0.4

0.1

0.02

0.2

4. Steel contains

80% or more iron

Alloying elements like chromium, tungsten nickel and copper

Elements like phosphorus, sulphur and silicon in varying quantities

50% or more iron

5. Which one of the following metals would work-harden more quickly than the others?

Lead

Silver

Copper

Brass

6. Dow metal contains

90% aluminium and 90% copper

92.5% aluminium and, 4% copper, 2% nickel and 1.5% Mg

90% magnesium and 9% aluminium with some copper

94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe

7. The temperature required for full annealing in hypereutectoid steel is

30° C to 50° C below lower critical temperature

30° C to 50° C above upper critical temperature

30° C to 50° C above lower critical temperature

30° C to 50° C below upper critical temperature

8. The charge of the blast furnace consists of

Calcined ore (4 parts), coke (1 part) and limestone (8 parts)

Calcined ore, coke and limestone all in equal parts

Calcined ore (1 part), coke (8 parts) and limestone (4 parts)

Calcined ore (8 parts), coke (4 parts) and limestone (1 part)

9.

Blast furnace produces following by reduction of iron ore

Pig iron

Malleable iron

Wrought iron

Cast iron

10. Y-alloy contains

4 to 4.5% magnesium, 3 to 4% copper and rest aluminium

3.5 to 4.5% copper, 0.4 to 0.7% magnesium, 0.4 to 0.7% manganese and rest aluminium

3.5 to 4.5% copper, 1.2 to 1.7% manganese, 1.8 to 2.3% nickel, 0.6% each of silicon, magnesium and iron, and rest aluminium

5 to 6% tin, 2 to 3% copper and rest aluminium

Page 2 of 4

11. Pick up the wrong statement

Tungsten in steels improves magnetic properties and hardenability

Nickel and chromium in steel helps in raising the elastic limit and improve the resilience and ductility

Manganese in steel induces hardness

Aluminium in steel results in excessive grain growth

12. Normalising of steel is done to

Remove dislocations caused in the internal structure due to hot working

All of the above

Remove strains caused by cold working

Refine the grain structure

13. In a hardening process, the hypo-eutectoid steel is

Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air

Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium

Heated below or closes to the lower critical temperature and then cooled slowly

Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace

14. Nickel in steel

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

Improves cutting ability and reduces hardenability

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

Improves wear resistance, cutting ability and toughness

15. The correct composition of Babbitt metal is

87% Sn, 4% Cu, 8% Sb, 1% Al

90% Sn, 2% Cu, 4% Sb, 2% Bi, 2% Mg

82% Sn, 4% Cu, 8% Sb, 3% Al, 3% Mg

87.75% Sn, 4% Cu, 8% Sb, 0.25% Bi

16. Which of the following impurity in cast iron makes it hard and brittle?

Silicon

Sulphur

Phosphorus

Manganese

17. Iron-carbon alloys containing carbon ________ 4.3% are known as hyper-eutectic cast irons.

None of these

Less than

Equal to

More than

18. For a steel containing 0.8% carbon

There is no critical point

There are two critical points

There can be any number of critical points

There is only one critical point

19. When a steel containing __________ 0.8% carbon is cooled slowly below the lower critical point, it consists of ferrite and pearlite.

None of these

Less than

More than

Equal to

20. Which of the following has a fine gold colour and is used for imitation jewellery?

Aluminium bronze

Babbitt metal

Silicon bronze

Gun metal

Page 3 of 4

21. Pick up the wrong statement Nickel and chromium in steel help in

Providing corrosion resistance

Raising the elastic limit

Improving machining properties

Providing high strength at elevated temperatures

22. Which of the following metal is used for nuclear energy?

Niobium

Uranium

Thorium

All of these

23. Pipes for bicycle frames are made of

Forged steel

Cold rolled steel

Cast steel

Hot rolled steel

24. Cemented carbide tools are not found to be suitable for cutting

Cast iron

Steel

Brass

Aluminium

25. Heavy duty leaf and coil springs contain carbon of the following order

0.8%

0.5%

0.2%

1.0%

26. The following element can't impart high strength at elevated temperature

Magnesium

Silicon

Nickel

Manganese

27. According to Indian standard specifications, SG 400/15 means

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

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

None of the above

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

28. The composition of silver solder is

Silver, copper, aluminium

Silver, tin, nickel

Silver, lead, zinc

Silver, copper, zinc

29. The silicon steel is widely used for

Connecting rods

Cutting tools

Motor car crankshafts

Generators and transformers in the form of laminated cores

30. A coarse grained steel

Is more ductile and has a greater tendency to distort during heat treatment

Is less tough and has a less tendency to distort during heat treatment

Is more ductile and has a less tendency to distort during heat treatment

Is less tough and has a greater tendency to distort during heat treatment

Page 4 of 4

31. Bell metal contains

90% copper and 10% tin

70% copper and 30% zinc

70 - 75% copper and rest tin

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

32. Amorphous material is one

Which emits fumes on melting

In which there is no definite atomic structure and atoms exist in a random pattern just as in a liquid

In which atoms align themselves in a geometric pattern upon solidification

Which is not attacked by phosphorous

33. Brass (alloy of copper and zinc) is an example of

Intermetallic compounds

Interstitial solid solution

Substitutional solid solution

All of the above

34. Which of the following has highest specific strength of all structural materials?

Magnesium alloys

Titanium alloys

Magnetic steel alloys

Chromium alloys

35. Which of the following statement is wrong?

Steel with 0.8% carbon is wholly pearlite

The cementite is identified as round particles in the structure

The amount of cementite increases with the increase in percentage of carbon in iron

A mechanical mixture of 87% cementite and 13% ferrite is called pearlite

36. Which of the following alloys does not have copper as one of the constituents?

Delta metal

Constantan

Nichrome

Monel metal

37. When steel containing less than 0.8% carbon is cooled slowly from temperatures above or within the critical range, it consists of

Ferrite and pearlite

Mainly ferrite

Mainly pearlite

Pearlite and cementite

38. In process annealing, the hypo eutectoid steel is

Heated below or closes to the lower critical temperature and then cooled slowly

Heated from 30°C to 50°C above the upper critical temperature and then cooled slowly in the furnace

Heated from 30°C to 50°C above the upper critical temperature and then cooled suddenly in a suitable cooling medium

Heated from 30°C to 50°C above the upper critical temperature and then cooled in still air

39. Tensile strength of steel can be safely increased by

Adding carbon up to 0.83%

Adding small quantities of copper

Adding carbon up to 6.3%

Adding carbon up to 2.8%

40. In spheroidising process, the steel is

Heated below the lower critical temperature and then cooled slowly

Heated up to the lower critical temperature and then cooled in still air

Heated slightly above the lower critical temperature and then cooled slowly to a temperature of 600°C

None of the above

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 and Mechanics Available Online in 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