Mechanical Engineering - Engineering Materials

1. 

Which of the following is a case hardening process?

A. Carburising
B. Cyaniding
C. Nitriding
D. all of these

Answer: Option D

Explanation:

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2. 

In a crystalline material, atoms are arranged in definite and orderly manner and form.

A. Agree
B. Disagree

Answer: Option A

Explanation:

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3. 

The austenitic stainless steel contains

A. 18% chromium and 8% nickel
B. 8% chromium and 18% nickel
C. 14% chromium and 0.35% carbon
D. 14% nickel and 0.35% carbon

Answer: Option A

Explanation:

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4. 

The process used for relieving the internal stresses previously set up in the Metal and for increasing the machinability of steel, is

A. normalising
B. full annealing
C. process annealing
D. spheroidising

Answer: Option C

Explanation:

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5. 

Steel containing upto 0.15% carbon, is known as

A. mild steel
B. dead mild steel
C. medium carbon steel
D. high carbon steel

Answer: Option B

Explanation:

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