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. Brass is an alloy of

None of these

Copper, tin and zinc

Copper and tin

Copper and zinc

2. Closed packed hexagonal space lattice is found in

Alpha-iron, tungsten, chromium and molybdenum

None of the above

Zinc, magnesium, cobalt, cadmium, antimony and bismuth

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

3. Isotropic materials are those which have the same

Electric and magnetic properties in all directions

Elastic properties in all directions

Stresses induced in all directions

Thermal properties in all directions

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

Nichrome

Babbitt metal

Phosphor bronze

Monel metal

5. White cast iron has

All of these

Low tensile strength

High compressive strength

Carbon in the form of carbide

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

Eighteen

Six

Twenty

Twelve

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

Hot hardness

Hot tempering

Creep

Fatigue

8. Following elements have face-centered cubic structure

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

Mg, Zn, Ti, Zr, Br, Cd

All of the above

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

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

Asbestos cement

Concrete

Cast iron

Vitrified clay

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

Creep

Endurance

Plastic deformation

Fatigue

Page 2 of 4

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

Throat

Tyres

Stack

Bosh

12. Recrystallization temperature is one

At which change of allotropic form takes place

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

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

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

Stiffness

Ductility

Plasticity

Resilience

14. Malleability of a material can be defined as

All of the above

Ability to undergo large permanent deformations in compression

Ability to undergo large permanent deformations in tension

Ability to recover its original form

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

Eutectic cast irons

None of these

Hypoeutectic cast irons

Hypereutectic cast irons

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

Increase

Decrease

First increase and then decrease

Remain constant

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

None of these

Body centered cubic space lattice

Face centered cubic space lattice

Close packed hexagonal space lattice

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

Increase endurance strength

Increase hardenability

Reduce machinability

Increase wear resistance

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

Induction hardening

Electroplating

Cyaniding

Nitriding

20. 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

Page 3 of 4

21. The steel widely used for motor car crankshafts is

Nickel-chrome steel

Chrome steel

Nickel steel

Silicon steel

22. Balls for ball bearings are made of

Carbon-chrome steel

Cast iron

Mild steel

Stainless steel

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

Externally applied forces with breakdown or yielding

Deformation under stress

Fracture due to high impact loads

None of the above

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

Hot working

Tempering

Annealing

Normalizing

25. Which is false statement about properties of aluminium?

Modulus of elasticity is fairly low

Wear resistance is very good

Creep strength limits its use to fairly low temperatures

Fatigue strength is not high

26. Delta iron occurs at temperature of

Above melting point

Between 1400°C and 1539°C

Room temperature

Between 910°C and 1400°C

27. Mild steel belongs to the following category

Medium carbon steel

Low carbon steel

Alloy steel

High carbon steel

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

There is no change in grain size

The grain size first increases and then decreases very rapidly

The average grain size is a minimum

The grain size increases very rapidly

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

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

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

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

High pressure and load

Elevated temperatures

Light load and pressure

Large surface wear

Page 4 of 4

31. The elastic stress strain behavior of rubber is

Plastic

No fixed relationship

Nonlinear

Linear

32. Foundry crucible is made of

German silver

Mild steel

Lead

Graphite

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

Any one of these

In still air

Suddenly in a suitable cooling medium

Slowly in the furnace

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

(B) Whiteheart cast iron

(A) Blackheart cast iron

(D) None of these

(C) Both (A) and (B)

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

Shot peening

Surface decarburisation

Cold working

Nitriding of surface

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

Cementite

Pearlite

Austenite

Ferrite

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

Malleable cast iron

White cast iron

Alloy cast iron

Nodular cast iron

38. The molecules in a solid move

Back and forth like tiny pendulums

In a random manner

In circular motion

In a haphazard way

39. The percentage of carbon in low carbon steel is

0.3%

0.05%

0.5%

0.15%

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

Has a fixed structure under all conditions

Exists in several crystal forms at different temperatures

Responds to heat treatment

Has its atoms distributed in a random pattern

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