IES-ESE Mechanical Engineering: Questions 34 - 37 of 81

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Question number: 34

» Manufacturing and Industrial Engineering » Joining » Physics of Welding

Appeared in Year: 2001

MCQ▾

Question

In manual arc welding, the equipment should have drooping characteristics in order to maintain

Choices

Choice (4) Response

a.

Current constant when arc length changes

b.

Temperature in the arc constant

c.

Weld pool red-hot

d.

Voltage constant when arc length changes

Question number: 35

» Manufacturing and Industrial Engineering » Joining » Physics of Welding

Appeared in Year: 2010

MCQ▾

Question

In an inert gas welding process, the commonly used gas is

Choices

Choice (4) Response

a.

Oxygen

b.

Hydrogen

c.

Krypton

d.

Helium or Argon

Question number: 36

» Manufacturing and Industrial Engineering » Joining » Physics of Welding

Appeared in Year: 2010

Assertion-Reason▾

Assertion (Ꭺ)

Inert gas and bare electrode instead of flux coated electrode is used in the case of automatic TIG and MIG welding processes.

Reason (Ꭱ)

Better protection is provided by a cloud of inert gas than the cover created by the flux.

Choices

Choice (4) Response

a.

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

b.

Ꭺ is true but Ꭱ is 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

Question number: 37

» Manufacturing and Industrial Engineering » Joining » Physics of Welding

Appeared in Year: 2002

Match List-Ⅰ List-Ⅱ▾

Question

Match List I with List II and select the correct answer:
List-Ⅰ (Ingredients) List-Ⅱ (Welding Functions)

(A)

Potassium oxalate

(i)

Fluxing agent

(B)

Cellulose

(ii)

De-oxidizer

(C)

Ferro silicon

(iii)

Arc stabilizer

(D)

Silica

(iv)

Gas forming material

Choices

Choice (4) Response
  • (A)
  • (B)
  • (C)
  • (D)

a.

  • (i)
  • (iii)
  • (iv)
  • (ii)

b.

  • (ii)
  • (i)
  • (iv)
  • (iii)

c.

  • (iii)
  • (ii)
  • (i)
  • (iv)

d.

  • (iii)
  • (iv)
  • (ii)
  • (i)

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