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-4

May 10, 2021

Show paginator

Hide paginator

25%

Page 1 of 4

1. Babbitt metal is a

Copper base alloy

Cadmium base alloy

Tin base alloy

Lead base alloy

2. Maximum percentage of carbon in austenite is

0.26%

0.025%

1.7%

0.8%

3. Which of the following when used in ordinary low carbon steels, makes the metal ductile and of good bending qualities?

Manganese

Sulphur

Silicon

Phosphorus

4. For the allotropic forms of iron, the points of arrest are

The points of discontinuity

The points where no further change occurs

Constant for all metals

The points where there is no further flow of metal

5. The material in which the atoms are arranged regularly in some directions but not in others, is called

Crystalline material

Amorphous material

Mesomorphous material

None of these

6. Constantan an alloy used in thermocouples is an alloy of

Copper and tin

Copper and nickel

Copper and iron

Copper and zinc

7. A reversible change in the atomic structure of the steel with a corresponding change in the properties is known as

Recrystallization

Allotropic change

Heat treatment

Precipitation

8. Macrostructure of a material is, generally, examined by

Metallurgical microscope

Naked eye

X-ray techniques

Optical microscope

9. Which of the following pipes is least corrosion resistant?

Mild steel

Brass

Cast iron

Wrought iron

10. The heat treatment process used for softening hardened steel is

Normalizing

Carburising

Annealing

Tempering

Page 2 of 4

11. A material is said to be allotropic, if it has

Any one of the above

Atoms distributed in random pattern

Different crystal structures at different temperatures

Fixed structure at all temperatures

12. Silicon when added to copper improves

Hardness and strength

Strength and ductility

Machinability

Hardness

13. The ultimate tensile strength and yield strength of most of the metals, when temperature falls from 0 to 100°C will

Remain same

Decrease

Increase

First increase and then decrease

14. Hardness of lower bainite (tempered martensite) is about

RC 65

RC 80

RC 57

RC 48

15. Super conduction by metals is observed in the temperature range of

Around 100°C

Below 10°K

Above 100°K

Around 0°C

16. Delta-iron occurs between the temperature ranges of

600°C to 900°C

400°C to 600°C

900°C to 1400°C

1400°C to 1530°C

17. Which of the following impurity in cast iron promotes graphite nodule formation and increases the fluidity of the molten metal?

Sulphur

Silicon

Phosphorus

Manganese

18. In low carbon steels, ________ raises the yield point and improves the resistance to atmospheric corrosion.

Sulphur

Manganese

Silicon

Phosphorus

19. Wrought iron

Is a ductile material

Can be easily forged or welded

All of these

Cannot stand sudden and excessive shocks

20. Pig iron is the name given to

Raw material for blast furnace

Iron containing huge quantities of carbon

Product of blast furnace made by reduction of iron ore

Iron in molten form in the ladles

Page 3 of 4

21. The addition of which of the following improves machining of copper?

Vanadium

Zinc

Tin

Sulphur

22. Stress relaxation is the phenomenon

In which stress remains constant on increasing load

In which deformation tends to loosen the joint and produces a stress reduced

Stress reduces on increasing load

In which parts are not loaded

23. Vanadium in high speed steels

Promotes decarburisation

Forms very hard carbides and thus increases wear resistance

Provides high hot hardness

Promotes retention of austenite

24. The ability of a material to absorb energy in the plastic range is called

Toughness

Creep

Fatigue strength

Resilience

25. Age-hardening is related with

German silver

Stainless steel

Duralumin

Gun metal

26. Which of the following statement is correct?

The cast iron has high tensile strength

The pig iron is the name given to the product produced by cupola

The chilled cast iron has no graphite

The product produced by blast-furnace is called cast iron

27. Which of the following material has nearly zero coefficient of expansion?

Invar

Heat resisting steel

Stainless steel

High speed steel

28. Muntz metal contains copper and zinc in the ratio of

20 : 80

40 : 60

50 : 50

60 : 40

29. Nodular iron has

Low melting point

High tensile strength

High machinability

All of the above

30. 1841 high speed steel contains

None of the above

Vanadium 1%, chromium 4% and tungsten 18%

Vanadium 18%, chromium 1% and tungsten 4%

Vanadium 4%, chromium 18% and tungsten 1%

Page 4 of 4

31. Which of the following statement is true about brittle fracture?

Many metals with hexagonal close packed (H.C.P) crystal structure commonly show brittle fracture

Cup and cone formation is characteristic for brittle materials

High temperature and low strain rates favour brittle fracture

Brittle fracture is always preceded by noise

32. In which of the following cases, consideration of creep is important

Cast iron pipes

Flywheel of steam engine

Gas turbine blades

Cycle chains

33. Dye penetrant method is generally used to locate

Core defects

Temporary defects

Superficial defects

Surface defects

34. Ferromagnetic alpha iron exists in temperature range of

1400 to 1539°C

770 to 910°C

910 to 1440°C

Below 723°C

35. Connecting rod is, usually, made from

Medium carbon steel

High speed steel

High carbon steel

Low carbon steel

36. Inconel contains

68% nickel, 29% copper and 3% other constituents

80% nickel and 20% chromium

65% nickel, 15% chromium and 20% iron

80% nickel, 14% chromium and 6% iron

37. The metallic structure of mild steel is

Body centered cubic

Hexagonal close packed

Face centered cubic

Cubic structure

38. An important property of high silicon (12-18%) cast iron is the high

Plasticity

Brittleness

Hardness

Ductility

39. White cast iron contains carbon in the form of

Graphite

Free carbon

Cementite

White carbon

40. Recrystallization temperature can be lowered by

All of the above

Grain refinement

Working at lower temperature

Purification of metal

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