IES-ESE Mechanical Engineering: Questions 38 - 42 of 81
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Question number: 38
Appeared in Year: 2011
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?
1 and 3 only
2 and 3 only
1, 2 and 3
1 and 2 only
Question number: 39
Question number: 40
Question number: 41
Appeared in Year: 2006
Aluminium has poor weldability.
Aluminium has high thermal conductivity and high affinity to oxygen.
|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
Appeared in Year: 2010
It is generally difficult to weld Aluminum parts by normal arc welding process.
Hard and brittle Aluminum-oxide film is formed at the welded joints.
|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|