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CBT TEST

MME 201 CBT PRACTICE TEST

Phil

February 9, 2024

Take your time to read instructions before taking this test.

There are 40 questions which you are to answer in 15 minutes that gives you roughly 30 seconds per question.

If you can get at least 60%, you can be rest assured that you’ll ace MEE 203 exam

In a normal exam you will be asked between 40 – 60 questions but I only arranged 40 questions

Note

Do not be in a hurry to answer the questions

Do not waste time on a question you don’t know

Move as fast as possible and starting with questions that don’t have calculation first to save time

Always crosscheck

Don’t be in a hurry to submit, you are not in a competition

Don’t be scared. Getting an A is easy

Don’t be over confident, you can end up a D, E or F. Calm your blood, no be only you sabi book

Please do well to use our comment box incase there’s a message you want to pass to us

70 – 100 A

60 – 69 B

50 – 59 C

45 – 49 D

40 – 44 E

0 – 39 F

I wish you success

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MME 201

1 / 40

1. Ceramics make excellent refractory materials. A material is said to be refractory if it:

A. All the options

B. has high refractive index

C. retains its strength at high temperatures

D. resists the flow of electric current

2 / 40

2. Calcium is an isobar of Argon. They differ in:

A. Number of nucleons

B. Number of neutrons

C. Atomic weight

D. None of the options

3 / 40

3. In malleable iron, carbon is present in the form of

A. Nodular aggregates of graphite

B. Cementite

C. Spheroids

D. Flakes

4 / 40

4. In nodular iron, graphite is in the form of

A. Spheroids

B. Free carbon

C. Flakes

D. Cementite

5 / 40

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

A. Ferrite

B. Pearlite

C. Austenite

D. Cementite

6 / 40

6. The percentage of carbon in grey iron cast' ings usually varies between

A. 5 to 7%

B. 1 to 2%

C. 2.5 to 4.5%

D. 0.5 to 1%

7 / 40

7. Wrought iron is

A. Hard

B. High in strength

C. Heat treated to change its properties

D. Highly resistant to corrosion

8 / 40

8. Mild steel belongs to the following category

A. Alloy steel

B. Low carbon steel

C. High carbon steel

D. Medium carbon steel

9 / 40

9. The unique property of cast iron is, its high

A. Ductility

B. Damping characteristics

C. Surface finish

D. Malleability

10 / 40

10. The crystal of alpha iron is

A. Face centred cubic

B. Body centred cubic

C. Hexagonal close packed

D. Cubic structure

11 / 40

11. The ultimate tensile strength and yield strength of most of the metals, when temperature falls from 0 to -150°C will

A. Remain same

B. Decrease

C. First increase and then decrease

D. Increase

12 / 40

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

A. Physical change

B. Solidus change

C. Molecular change

D. Allotropic change

13 / 40

13. Isotropic materials are those which have the same

A. Thermal properties in all directions

B. Stresses induced in all directions

C. Electric and magnetic properties in all directions

D. Elastic properties in all directions

14 / 40

14. The metallic structure of mild steel is
A.
B.
C.
D

A. Hexagonal close packed

B. Cubic structure

C. Face centred cubic

D. Body centred cubic

15 / 40

15. In compression, a prism of brittle material will break

A. By crushing into thousands of pieces

B. By shearing along oblique plane

C. In direction perpendicular to application of load

D. By forming a bulge

16 / 40

16. Pick up wrong statement about wrought iron

A. It is very soft and ductile

B. It is made by adding suitable percentage of carbon to molten iron and subjecting the product to repeated hammering and rolling

C. It contains carbon of the order of 0 to 0.25%

D. It can be easily forge welded

17 / 40

17. Silicon carbide is ductile.

A. True

B. False

18 / 40

18. Which of the following is correct?

A. Aluminum oxide reaches fracture point after glass

B. They do not reach a fracture point

C. Aluminum oxide reaches fracture point at the same time as glass

D. Aluminum oxide reaches fracture point before glass

19 / 40

19. Which of the following is correct?

A. Slope of stress strain curve of aluminum oxide is less than glass

B. Slope of stress strain curve of aluminum oxide is more than glass

C. Slope of stress strain curve of aluminum oxide is the same as glass

D. Slope of stress strain curve of aluminum oxide and glass are not comparable

20 / 40

20. What is shape of a stress strain curve for ceramics?

A. Straight line

B. Parabola

C. Inverted parabola

D. Hyperbola

21 / 40

21. Various isotopes of a given element have same:

A. Molar mass

B. Number of neutrons

C. Thermodynamic stability

D. Number of protons

22 / 40

22. Pig iron is the name given to

A. Iron containing huge quantities of carbon

B. Raw material for blast furnace

C. Iron in molten form in the ladles

D. Product of blast furnace made by reduction of iron ore

23 / 40

23. Cast iron is characterized by minimum of following %age of carbon

A. 2%

B. 0.2%

C. 1.3%

D. 0.8%

24 / 40

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

A. Heat treatment

B. Recrystallisation

C. Allotropic change

D. Precipitation

25 / 40

25. Paramagnetic alpha iron changes to gamma iron at

A. 1539°C

B. 1440°C

C. 910°C

D. 770°C

26 / 40

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

A. Plastic deformation

B. Endurance

C. Fatigue

D. Creep

27 / 40

27. In terms of which of the following properties, metals are better than ceramics?

A. Hardness

B. Ductility

C. Yield Strength

D. Toughness

28 / 40

28. In grey cast iron, carbon is present in the form of

A. Free carbon

B. Flakes

C. Cementite

D. Spheroids

29 / 40

29. The number of electrons in 1 cm3 of metal would be of the order of

A. 10^22

B. 10^40

C. 10^16

D. 10^10

30 / 40

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

A. The points of discontinuity

B. Constant for all metals

C. The points where there is no further flow of metal

D. The points where no further change occurs

31 / 40

31. Steels mainly contain iron and carbon. Under which of the following categories do they belong?

A. Metallic Solids

B. Composites

C. Polymer

D. Ceramics

32 / 40

32. Which of the following is true for polymers?

A. They do not have a linear stress-strain curve

B. All the options

C. They have very high molecular mass

D. They have high strength to mass ratio

33 / 40

33. Cast iron has
A.
B.
C.

A. High tensile strength

B. High ductility

C. Its elastic limit close to the ultimate breaking strength

D. All the options

34 / 40

34. Which of the point is there in a stress strain curve for a ceramic?

A. Limit of proportionality

B. Fracture point

C. Yield point

D. Ultimate tensile strength

35 / 40

35. The percentage of carbon in pig iron varies from

A. 0.1 to 1.2%

B. 4 to 4.5%

C. 2.5 to 4%

D. 1.5 to 2.5%

36 / 40

36. Which of the following test are done to find out the mechanical behavior of ceramics?

A. Transverse bending test

B. Shearing test

C. Compressive test

D. Tensile test

37 / 40

37. GFRP is an important composite. It stands for

A. Graphite Fibre Reinforced Polymer

B. Glass Fibre Reinforced Polymer

C. Germanium Fibre Reinforced Polymer

D. Gelatin Fibre Reinforced Polymer

38 / 40

38. The elastic stress strain behaviour of rubber is

A. No fixed relationship

B. Linear

C. Plastic

D. Non-linear

39 / 40

39. Sulphur in pig iron tends to make it.

A. Tough

B. Hard

C. Soft

D. Ductile

40 / 40

40. Ferromagnetic alpha iron exists in temperature range of

A. 1400-1539°C

B. 910-1440°C

C. 770-910°C

D. Below 723°C

Your score is

The average score is 30%

MME 201 CBT PRACTICE TEST

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