Mechanical Engineering MCQ with Answers
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Why is it sometimes necessary to preheat the base material before welding?
Why is it sometimes necessary to preheat the base material before welding?
Open 290Weld decay occurs in which of the following steel types
Weld decay occurs in which of the following steel types
Open 291The temperature at which chromium carbide is formed is in the range
The temperature at which chromium carbide is formed is in the range
Open 292Weld decay cause which of the following problem
Weld decay cause which of the following problem
Open 293Weld decay can be minimized by specifying a steel with
Weld decay can be minimized by specifying a steel with
Open 294Post weld heat treatment is used to reduce
Post weld heat treatment is used to reduce
Open 295In GMAW MIG/MAG welding, which mode of metal transfer uses frequencies in cycle time?
In GMAW MIG/MAG welding, which mode of metal transfer uses frequencies in cycle time?
Open 296What is meant by the term duty cycle?
What is meant by the term duty cycle?
Open 297What is the purpose of a cross joint tensile test? To check?
What is the purpose of a cross joint tensile test? To check?
Open 298Why is the post weld heat treatment carried out?
Why is the post weld heat treatment carried out?
Open 299Which of the following would not be required before welding?
Which of the following would not be required before welding?
Open 300What is the main difference between EN and ASME welding procedure?
What is the main difference between EN and ASME welding procedure?
Open 301The term manual welding is used when the welder controls?
The term manual welding is used when the welder controls?
Open 302What do the first 2 numbers in MMA electrode represent to EN classification?
What do the first 2 numbers in MMA electrode represent to EN classification?
Open 303Pure argon is used with the MIG process to weld which material?
Pure argon is used with the MIG process to weld which material?
Open 304If preheating is decreased, which of the following would be most greatly affected?
If preheating is decreased, which of the following would be most greatly affected?
Open 305In medium carbon steels a fast cooling rate would most likely cause which of the following?
In medium carbon steels a fast cooling rate would most likely cause which of the following?
Open 306Which standard is used for European welding procedure qualification?
Which standard is used for European welding procedure qualification?
Open 307Sequential welding is referred to which of the following?
Sequential welding is referred to which of the following?
Open 308Which MMA electrode is commonly used for vertical down welding?
Which MMA electrode is commonly used for vertical down welding?
Open 309What unit measurement is used for Charpy impact testing?
What unit measurement is used for Charpy impact testing?
Open 310Which BS EN standard is used for welding symbols?
Which BS EN standard is used for welding symbols?
Open 311Included angle of V joint
Included angle of V joint
Open 312Who is responsible for site safety?
Who is responsible for site safety?
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