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API-577 Exam Dumps - Welding Inspection and Metallurgy Exam

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Question # 17

At least how far on each side of the weld should preheat be maintained?

A.

2 in. (5.1 cm)

B.

3 in. (7.6 cm)

C.

4 in. (10.2 cm)

D.

6 in. (15.2 cm)

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Question # 18

To avoid burn through during in-service welding on thinner wall equipment, it is generally recommended to:

A.

Use larger diameter electrodes.

B.

Minimize weaving the bead.

C.

Maximize weaving the bead.

D.

Use high heat input.

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Question # 19

What is the most capable NDE method for finding a discontinuity such as incomplete fusion in a joint?

A.

MT

B.

UT

C.

ET

D.

RT

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Question # 20

What is the major cause of lack of fusion in all welding processes involving carbon steel?

A.

Inadequate preheat

B.

Improper welding speed

C.

Improper heat input and improper welding technique

D.

Not using a low hydrogen electrode or improper shielding

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Question # 21

Which of the following weld flaws is described as a subsurface terrace and step-like crack weakened by dispersed planar-shaped inclusions?

A.

Lamellar tearing

B.

Hydrogen cracking

C.

Sulfite stringers

D.

Hot cracking

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Question # 22

Steels usually require both preheat and PWHT if they have a carbon equivalent higher than:

A.

0.35

B.

0.45

C.

0.50

D.

0.55

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Question # 23

ACFM is an NDE technique ideal for inspecting:

A.

Nozzles, ring-grooves, and grind-out areas.

B.

Lap joint welds and uphill welding.

C.

Butt welds (single and double bevel) and plug welds.

D.

Fillet welds, J-welds, and seal welds.

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Question # 24

Which of the following transfer methods associated with GMAW is characterized by a highly directed stream of discrete drops that are accelerated by arc forces, and negligible spatter?

A.

Pulsed droplet transfer

B.

Short circuiting transfer

C.

Globular transfer

D.

Spray transfer

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