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

Elevated temperatures

Large surface wear

High pressure and load

Light load and pressure

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

The grain size first increases and then decreases very rapidly

The grain size increases very rapidly

There is no change in grain size

The average grain size is a minimum

3. The elastic stress strain behavior of rubber is

Nonlinear

No fixed relationship

Plastic

Linear

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

(A) Blackheart cast iron

(D) None of these

(B) Whiteheart cast iron

(C) Both (A) and (B)

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

Decrease

Increase

First increase and then decrease

Remain constant

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

Surface decarburisation

Shot peening

Nitriding of surface

Cold working

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

Alloy cast iron

Nodular cast iron

White cast iron

Malleable cast iron

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

Austenite

Pearlite

Cementite

Ferrite

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

Close packed hexagonal space lattice

Body centered cubic space lattice

None of these

Face centered cubic space lattice

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

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

Silicon and manganese has burnt and carbon has started oxidizing

Air is burning out silicon and manganese

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

Page 2 of 4

11. Balls for ball bearings are made of

Cast iron

Stainless steel

Carbon-chrome steel

Mild steel

12. Brass is an alloy of

Copper and tin

Copper and zinc

Copper, tin and zinc

None of these

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

Stack

Tyres

Throat

Bosh

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

Has a fixed structure under all conditions

Has its atoms distributed in a random pattern

Responds to heat treatment

Exists in several crystal forms at different temperatures

15. The molecules in a solid move

In circular motion

In a haphazard way

Back and forth like tiny pendulums

In a random manner

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

Electroplating

Induction hardening

Cyaniding

Nitriding

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

Fatigue

Plastic deformation

Endurance

Creep

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

Eighteen

Twelve

Twenty

Six

19. Following elements have face-centered cubic structure

Mg, Zn, Ti, Zr, Br, Cd

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

All of the above

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

20. White cast iron has

All of these

Low tensile strength

Carbon in the form of carbide

High compressive strength

Page 3 of 4

21. Which is false statement about properties of aluminium?

Wear resistance is very good

Fatigue strength is not high

Modulus of elasticity is fairly low

Creep strength limits its use to fairly low temperatures

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

Hypoeutectic cast irons

None of these

Hypereutectic cast irons

Eutectic cast irons

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

None of the above

Deformation under stress

Fracture due to high impact loads

Externally applied forces with breakdown or yielding

24. Neutral solution is one which has pH value

Equal to 7

Less than 7

pH value has nothing to do with neutral solution

Greater than 7

25. Malleability of a material can be defined as

Ability to recover its original form

Ability to undergo large permanent deformations in compression

Ability to undergo large permanent deformations in tension

All of the above

26. Mild steel belongs to the following category

Medium carbon steel

High carbon steel

Alloy steel

Low carbon steel

27. The steel widely used for motor car crankshafts is

Chrome steel

Silicon steel

Nickel steel

Nickel-chrome steel

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

Resilience

Plasticity

Ductility

Stiffness

29. Foundry crucible is made of

Lead

Mild steel

Graphite

German silver

30. Recrystallization temperature is one

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

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

At which crystals grow bigger in size

At which change of allotropic form takes place

Page 4 of 4

31. Delta iron occurs at temperature of

Between 1400°C and 1539°C

Between 910°C and 1400°C

Room temperature

Above melting point

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

Concrete

Vitrified clay

Cast iron

Asbestos cement

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

Hot tempering

Creep

Fatigue

Hot hardness

34. Isotropic materials are those which have the same

Electric and magnetic properties in all directions

Thermal properties in all directions

Stresses induced in all directions

Elastic properties in all directions

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

Phosphor bronze

Nichrome

Babbitt metal

Monel metal

36. Closed packed hexagonal space lattice is found in

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

Alpha-iron, tungsten, chromium and molybdenum

None of the above

Zinc, magnesium, cobalt, cadmium, antimony and bismuth

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

Tempering

Annealing

Normalizing

Hot working

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

In still air

Slowly in the furnace

Any one of these

Suddenly in a suitable cooling medium

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

Reduce machinability

Increase hardenability

Increase wear resistance

Increase endurance strength

40. The percentage of carbon in low carbon steel is

0.5%

0.05%

0.3%

0.15%

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-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
Explain the working of marshalling yard through neat diagram

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