Welding Metallurgy MCQ Questions and Answers

1

Stainless steel is welded using

A) oxy-acetylene flame B) oxy-hydrogen flame C) arc welding D) inert gas arc welding

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

2

The nature of submerged arc welding flux with basicity index of 0.5 is

A) neutral B) basic C) semi-basic D) acidic

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

3

Lap joints are preferred over butt joints in soldering/brazing because

A) these are weaker in tension but stronger in shear B) these are weaker in shear but stronger in tension C) these are stronger in both shear and tension D) the lap joints are easily made

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

4

For a good quality brazing, the molten filler alloy should have

A) low contact angle with the base metal B) low density C) high surface tension D) high viscosity

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

5

Determine the correctness or otherwise of the following Assertion [a] and the Reason [r].
Assertion: In a pure metal weld, elastic modulus in the heat affected zone (HAZ) is the same as that in the base metal.
Reason: Coarse grained microstructure in the HAZ results in lower hardness.

A) Both [a] and [r] are true and [r] is the correct reason for [a] B) Both [a] and [r] are true and [r] is not the correct reason for [a] C) Both [a] and [r] are false D) [a] is true but [r] is false

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

6

Preheating of steel plate during welding is required to

A) reduce the heat input B) increase the heat input C) increase the cooling rate D) decrease the cooling rate

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

7

Which of the following is not a solid state welding process?

A) Friction stir welding B) Ultrasonic welding C) Explosive welding D) Flux cored arc welding

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

8

Which one of the following welding processes uses a non-consumable electrode?

A) Gas tungsten arc welding B) Gas metal arc welding C) Submerged arc welding D) Flux cored arc welding

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

9

A weldment consists of

A) fused part of the weld B) fused part and the heat affected zone (HAZ) C) fused part + HAZ + base metal D) HAZ

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

10

Preheating prior to welding is done for the purpose of

A) decreasing cooling rate B) facilitating fusion of high melting metals C) preventing hot cracking D) ensuring full penetration

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Welding Metallurgy MCQ Questions and Answers | Metallurgical Engineering