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. The molecules in a solid move

In a random manner

In circular motion

In a haphazard way

Back and forth like tiny pendulums

2. Following elements have face-centered cubic structure

Mg, Zn, Ti, Zr, Br, Cd

All of the above

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

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

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

(D) None of these

(A) Blackheart cast iron

(B) Whiteheart cast iron

(C) Both (A) and (B)

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

Babbitt metal

Phosphor bronze

Monel metal

Nichrome

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

Hypereutectic cast irons

Eutectic cast irons

None of these

Hypoeutectic cast irons

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

Has a fixed structure under all conditions

Responds to heat treatment

Has its atoms distributed in a random pattern

Exists in several crystal forms at different temperatures

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

Six

Eighteen

Twenty

Twelve

8. 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

9. Isotropic materials are those which have the same

Elastic properties in all directions

Electric and magnetic properties in all directions

Stresses induced in all directions

Thermal properties in all directions

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

Suddenly in a suitable cooling medium

In still air

Any one of these

Slowly in the furnace

Page 2 of 4

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

Induction hardening

Nitriding

Electroplating

Cyaniding

12. Which is false statement about properties of aluminium?

Creep strength limits its use to fairly low temperatures

Fatigue strength is not high

Modulus of elasticity is fairly low

Wear resistance is very good

13. Mild steel belongs to the following category

High carbon steel

Low carbon steel

Medium carbon steel

Alloy steel

14. White cast iron has

All of these

High compressive strength

Low tensile strength

Carbon in the form of carbide

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

Silicon and manganese has burnt and carbon has started oxidizing

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

Air is burning out silicon and manganese

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

16. 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

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

Tempering

Hot working

Normalizing

Annealing

18. 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

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

Cold working

Surface decarburisation

Shot peening

Nitriding of surface

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

Austenite

Ferrite

Cementite

Pearlite

Page 3 of 4

21. Closed packed hexagonal space lattice is found in

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

Zinc, magnesium, cobalt, cadmium, antimony and bismuth

None of the above

Alpha-iron, tungsten, chromium and molybdenum

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

Resilience

Ductility

Plasticity

Stiffness

23. Balls for ball bearings are made of

Cast iron

Mild steel

Carbon-chrome steel

Stainless steel

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

Large surface wear

Elevated temperatures

High pressure and load

Light load and pressure

25. The percentage of carbon in low carbon steel is

0.5%

0.3%

0.15%

0.05%

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

Remain constant

Increase

First increase and then decrease

Decrease

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

Vitrified clay

Concrete

Asbestos cement

Cast iron

28. The elastic stress strain behavior of rubber is

No fixed relationship

Linear

Nonlinear

Plastic

29. Foundry crucible is made of

Graphite

Lead

German silver

Mild steel

30. The steel widely used for motor car crankshafts is

Nickel steel

Nickel-chrome steel

Silicon steel

Chrome steel

Page 4 of 4

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

White cast iron

Malleable cast iron

Alloy cast iron

Nodular cast iron

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

The grain size first increases and then decreases very rapidly

There is no change in grain size

The grain size increases very rapidly

The average grain size is a minimum

33. 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

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

Creep

Fatigue

Plastic deformation

Endurance

35. Delta iron occurs at temperature of

Between 910°C and 1400°C

Between 1400°C and 1539°C

Above melting point

Room temperature

36. Recrystallization temperature is one

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

At which change of allotropic form takes place

At which crystals grow bigger in size

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

37. Brass is an alloy of

Copper and tin

Copper, tin and zinc

None of these

Copper and zinc

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

Tyres

Throat

Stack

Bosh

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

Reduce machinability

Increase endurance strength

Increase hardenability

Increase wear resistance

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

Hot tempering

Hot hardness

Fatigue

Creep

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

Comprehensive 100 MCQs based on Surveying in Civil Engineering with answer keys
Comprehensive 100-question multiple-choice bank on Concrete Technology, complete with answer keys
Discuss about concrete and its nominal proportions?
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

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