Manufacturing and Industrial Engineering-Joining (IES-ESE Mechanical Engineering): Questions 42 - 46 of 50

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Question number: 42

» Manufacturing and Industrial Engineering » Joining » Physics of Welding

Appeared in Year: 1998

MCQ▾

Question

In oxy-acetylene gas welding, for complete combustion, the volume of oxygen required per unit of acetylene is

Choices

Choice (4) Response
a.

2.5

b.

1.5

c.

2

d.

1

Question number: 43

» Manufacturing and Industrial Engineering » Joining » Physics of Welding

Appeared in Year: 2012

MCQ▾

Question

Which of the following factors improve weldability of steel?

1. Low carbon content

2. High carbon content

3. Good affinity content

4. Poor affinity to oxygen

Choices

Choice (4) Response
a.

2 and 4

b.

2 and 3

c.

1 and 3

d. 1 and 4

Question number: 44

» Manufacturing and Industrial Engineering » Joining » Physics of Welding

Appeared in Year: 1995

Assertion-Reason▾

Assertion (Ꭺ)

If neutral flame is used in oxy-acetylene welding, both oxygen and acetylene cylinders of same capacity will be emptied at the same time.

Reason (Ꭱ)

Neutral flame uses equal amounts of oxygen and acetylene.

Choices

Choice (4) Response
a. Ꭺ is true but Ꭱ is false
b. Ꭺ is false but Ꭱ is true
c. Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ
d. Both Ꭺ and Ꭱ are false

Question number: 45

» Manufacturing and Industrial Engineering » Joining » Physics of Welding

Appeared in Year: 2012

Assertion-Reason▾

Assertion (Ꭺ)

In gas welding the metal to be joined gets oxidized or carburized

Reason (Ꭱ)

The neutral flame affects no chemical change on the molten metal.

Choices

Choice (4) Response
a. Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ
b. Ꭺ is false but Ꭱ is true
c. Ꭺ is true but Ꭱ is false
d. Both Ꭺ and Ꭱ are false

Question number: 46

» Manufacturing and Industrial Engineering » Joining » Physics of Welding

Appeared in Year: 2005

MCQ▾

Question

Consider the following statements:

  1. In arc welding, 65 % to 75 % heat is generated at the anode.
  2. Duty cycle in case of arc welding is the cycle of complete welding of work piece from the beginning.
  3. Arc blow is more common with DC welding.

Which of the statements given above are correct?

Choices

Choice (4) Response
a.

1 and 2

b.

1, 2 and 3

c.

2 and 3

d.

1 and 3

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