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Engineering Materials Online Exam Quiz

Important questions about Engineering Materials. Engineering Materials MCQ questions with answers. Engineering Materials exam questions and answers for students and interviews.

1. Induction hardening is basically a

Options

A : carburising process

B : surface hardening process

C : core-hardening process

D : none of these

2. The strength is the ability of a material to resist

Options

A : deformation under stress

B : externally applied forces with breakdown or yielding

C : fracture due to high impact loads

D : none of these

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

Options

A : white cast iron

B : nodular cast iron

C : malleable cast iron

D : alloy cast iron

4. In induction hardening, the depth of hardening is controlled by controlling the voltage.

Options

A : Correct

B : Incorrect

C :

D :

5. Bronze is an alloy of

Options

A : copper and zinc

B : copper and tin

C : copper, tin and zinc

D : none of these

6. Blast furnace is used to produce

Options

A : pig iron

B : cast iron

C : wrought iron

D : steel

7. The austenite is a solid solution of carbon or iron carbide in gamma-iron.

Options

A : Correct

B : Incorrect

C :

D :

8. Cartidge brass can be

Options

A : cold rolled into sheets

B : drawn into wires

C : formed into tube

D : any one of these

9. In normalising process, the hypo-eutectiod steel is heated from 30° C to 50° C above the upper critical temperature and then cooled in still air.

Options

A : True

B : False

C :

D :

10. In flame hardening, oxy-acetylene flame is used.

Options

A : Yes

B : No

C :

D :

1. In low carbon steels, presence of small quantities of sulphur improves

Options

A : weldability

B : formability

C : machinability

D : hardenability

2. Phosphorus is added in low carbon steels to raise its yield point.

Options

A : True

B : False

C :

D :

3. The defect which takes place due to imperfect packing of atoms during crystallisation is known as

Options

A : line defect

B : surface defect

C : point defect

D : none of these

4. The material in which the atoms are arranged chaotically, is called

Options

A : amorphous material

B : mesomorphous material

C : crystalline material

D : none of these

5. Free cutting steels

Options

A : contain carbon in free from

B : require minimum cutting force

C : is used where rapid machining is the prime requirement

D : can be cut freely

6. Which of the following metal shrinks most from molten state to solid state?

Options

A : Cast iron

B : Cast steel

C : Brass

D : Admirality metal

7. The aluminium alloy made by melting aluminium with 2 to 10% magnesium and 1.75% copper is called

Options

A : duralumin

B : Y-alloy

C : magnalium

D : hindalium

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

Options

A : Sulphur

B : Vanadium

C : Tin

D : Zinc

9. When a steel containing __________ 0.8% carbon is cooled slowly below the lower critical point, it consists of ferrite and pearlite.

Options

A : equal to

B : less than

C : more than

D :

10. The alloy, mainly used for corrosion resistance in stainless steels is

Options

A : silicon

B : manganese

C : carbon

D : chromium

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