REPAIR AND MAINTENANCE - Practice Mode

1) Which is the operation to relieve residual stresses from the welding joint?

Drilling Peening Pre heating Post heating

Correct Answer: Post heating

2) What is the typical advantage of hard facing for a worn out metal?

To decrease the mechanical property To increase labour cost To increase idle time To increase mechanical operating efficiency

Correct Answer: To increase mechanical operating efficiency

3) Which is the result of qualification generally recorded in particular format?

Procedure Qualification Record (PQR) Welder Procedure Specification (WPS) Welding Procedure Qualification (WPS) Welder Performance Qualification (WPQ)

Correct Answer: Procedure Qualification Record (PQR)

4) Why hard facing is done for worn out parts?

To get brittleness To reduce mechanical operating efficiency Instead of buying new repairing of old parts To increase labour cost

Correct Answer: Instead of buying new repairing of old parts

5) Which action on metal parts shall deform, fracture or peel off in pieces?

Abrasion Erosion Impact load Friction

Correct Answer: Impact load

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