Manufacturing and Industrial Engineering (IES-ESE Mechanical Engineering): Questions 38 - 42 of 81

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 81 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 100.00 or

Question number: 38

» Manufacturing and Industrial Engineering » Joining » Physics of Welding

Appeared in Year: 2011

MCQ▾

Question

Consider the following statements.

Cast iron is difficult to weld, because of

1. Low ductility

2. Poor fusion

3. Tendency to crack on cooling

Which of these statements are correct?

Choices

Choice (4) Response

a.

1 and 3 only

b.

2 and 3 only

c.

1, 2 and 3

d.

1 and 2 only

Question number: 39

» Manufacturing and Industrial Engineering » Joining » Physics of Welding

Appeared in Year: 2007

MCQ▾

Question

In MIG welding, the metal is transferred into the form of which one of the following?

Choices

Choice (4) Response

a.

Molecules

b.

Weld pool

c.

A fine spray of metal

d.

Molten drops

Question number: 40

» Manufacturing and Industrial Engineering » Joining » Physics of Welding

Appeared in Year: 1993

MCQ▾

Question

Electron beam welding can be carried out in

Choices

Choice (4) Response

a.

Open air

b.

Vacuum

c.

A shielding gas environment

d.

A pressurized inert gas chamber

Question number: 41

» Manufacturing and Industrial Engineering » Joining » Physics of Welding

Appeared in Year: 2006

Assertion-Reason▾

Assertion (Ꭺ)

Aluminium has poor weldability.

Reason (Ꭱ)

Aluminium has high thermal conductivity and high affinity to oxygen.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

c.

Ꭺ is false but Ꭱ is true

d.

Both Ꭺ and Ꭱ are false

Question number: 42

» Manufacturing and Industrial Engineering » Joining » Physics of Welding

Appeared in Year: 2010

Assertion-Reason▾

Assertion (Ꭺ)

It is generally difficult to weld Aluminum parts by normal arc welding process.

Reason (Ꭱ)

Hard and brittle Aluminum-oxide film is formed at the welded joints.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are false

c.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

d.

Ꭺ is false but Ꭱ is true

Sign In