Free cutting steels_____________________?

Byadmin January 29, 2019August 16, 2021

Free cutting steels_____________________?

A. are used where ease in machining is the criterion
B. contain carbon in free form
C. require least cutting force
D. do not exist
E. can be cut freely even under adverse conditions

Engineering Materials

Nodular iron has____________________?

Nodular iron has____________________?

A. high maehinability
B. low melting point
C. high tensile strength
D. good fluidity
E. all of the above

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Engineering Materials

Corrosion resistance of steel is increased by addition of________________?

Corrosion resistance of steel is increased by addition of________________?

A. chromium and nickel
B. sulphur, phosphorus, lead
C. vanadium, aluminium
D. tungsten, molybdenum, vanadium, chromium
E. zinc

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Engineering Materials | Mechanical Engineering

Nodular cast iron is produced by adding __________ to the molten cast iron.

Question: Nodular cast iron is produced by adding __________ to the molten cast iron.
[A].

nickel
[B].
chromium
[C].
copper
[D].
magnesium

Answer: Option D

Explanation:

No answer description available for this question.

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Engineering Materials | Mechanical Engineering

Micro-structure of a material is, generally, examined by

Question: Micro-structure of a material is, generally, examined by
[A].

naked eye
[B].
optical microscope
[C].
X-ray techniques
[D].
none of these

Answer: Option D

Explanation:

No answer description available for this question.

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Engineering Materials | Mechanical Engineering

Manganese bronze contains more copper than silicon bronze.

Question: Manganese bronze contains more copper than silicon bronze.
[A].

Yes
[B].
No

Answer: Option B

Explanation:

No answer description available for this question.

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Engineering Materials

DuraJomin contains___________________?

DuraJomin contains___________________?

A. 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe
B. 92.5% aluminium, 40% copper, 2% nickel, and 1.5% Mg
C. 10% aluminium and 90% copper
D. 90% magnesium and 9% aluminium with some copper
E. 94% aluminium and 6% tin

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