Manufacturing and Industrial Engineering-Joining (IES-ESE Mechanical Engineering): Questions 1 - 4 of 50

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Question number: 1

» Manufacturing and Industrial Engineering » Joining » Physics of Welding

Appeared in Year: 2000

MCQ▾

Question

Which one of the following statements is correct?

Choices

Choice (4) Response

a.

No flux is used in gas welding of mild steel

b.

Borax is the commonly used flux coating on welding electrodes

c.

Laser beam welding employs a vacuum chamber and thus avoids use of a shielding method

d.

AC can be used for GTAW process

Question number: 2

» Manufacturing and Industrial Engineering » Joining » Physics of Welding

Appeared in Year: 2008

Assertion-Reason▾

Assertion (Ꭺ)

Submerged arc welding is not recommended for high carbon steels, tool steels, aluminium, magnesium etc.

Reason (Ꭱ)

This is because of unavailability of suitable fluxes, reactivity at high temperatures and low sublimation temperatures.

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.

Both Ꭺ and Ꭱ are false

d.

Ꭺ is true but Ꭱ is false

Question number: 3

» 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: 4

» 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

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