Mechanical Engineering MCQ with Answers
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A maximum interpass temperature is generally given to control?
A maximum interpass temperature is generally given to control?
Open 242Which of the following is considered the main limitation of the radiographic method of NDT?
Which of the following is considered the main limitation of the radiographic method of NDT?
Open 243For ultrasonic testing, which of the following statements is true?
For ultrasonic testing, which of the following statements is true?
Open 244In a heavy plate fabrication where S in residual @ 0.3%, which may cause problems in the welded joint, addition of Mn may be added to prevent:
In a heavy plate fabrication where S in residual @ 0.3%, which may cause problems in the welded joint, addition of Mn may be added to prevent:
Open 245Preheats are used on steel joints of high hardenability mainly to:
Preheats are used on steel joints of high hardenability mainly to:
Open 246Lamellar tears in steel weldments may only be formed when:
Lamellar tears in steel weldments may only be formed when:
Open 247Lamellar tearing is a problem in steels which is always associated with?
Lamellar tearing is a problem in steels which is always associated with?
Open 248Sensitization is a term applied to the formation of which intermetallic compound at the grain boundaries in the HAZ of austenitic steels?
Sensitization is a term applied to the formation of which intermetallic compound at the grain boundaries in the HAZ of austenitic steels?
Open 249Which of the following processes is most prone to solidification cracking?
Which of the following processes is most prone to solidification cracking?
Open 250The temperature gradient of steels subjected to post-heat treatment stress relief cycles must be carefully controlled at all the temperatures above 300°C in order to:
The temperature gradient of steels subjected to post-heat treatment stress relief cycles must be carefully controlled at all the temperatures abo...
Open 251For the structure termed martensitic to form in a C-Mn steel it must first be heated to?
For the structure termed martensitic to form in a C-Mn steel it must first be heated to?
Open 252Why is it sometimes necessary to preheat the base material before welding?
Why is it sometimes necessary to preheat the base material before welding?
Open 253Which of the following could be used to minimize the occurrence of solidification cracking in steel welds?
Which of the following could be used to minimize the occurrence of solidification cracking in steel welds?
Open 254Which BS EN standard is used for welding symbols on drawings?
Which BS EN standard is used for welding symbols on drawings?
Open 255What does the term WPQR mean?
What does the term WPQR mean?
Open 256The WPS calls for a root gap to be between 2 and 3 mm, the actual measured gap is 4 mm, what course of action would you take?
The WPS calls for a root gap to be between 2 and 3 mm, the actual measured gap is 4 mm, what course of action would you take?
Open 257Who should have access to WPQRS?
Who should have access to WPQRS?
Open 258During root welding, which of the following would be the main cause of excess penetration?
During root welding, which of the following would be the main cause of excess penetration?
Open 259The welder had increased the voltage on the SAW welding set, what would be the effect on the weld?
The welder had increased the voltage on the SAW welding set, what would be the effect on the weld?
Open 260What is the maximum OCV allowable to initiate an arc when using AC current?
What is the maximum OCV allowable to initiate an arc when using AC current?
Open 261Why is the OCV capped at this voltage setting?
Why is the OCV capped at this voltage setting?
Open 262What information would be recorded as a minimum on a completed production weld?
What information would be recorded as a minimum on a completed production weld?
Open 263Why would visual inspection of the excess weld material at the bottom of a cross-country pipeline be important?
Why would visual inspection of the excess weld material at the bottom of a cross-country pipeline be important?
Open 264Why is it essential to clean the excess weld metal on completion of the production weld?
Why is it essential to clean the excess weld metal on completion of the production weld?
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