Dear candidates you will find MCQ questions of Manufacturing Technology here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Explanation: inertia friction welding has the following advantages over the direct drive friction welding process:
Explanation: following are the advantages of direct drive friction welding over inertia friction welding:
Explanation: slag inclusions are one of the main weld defects. if we don’t properly clean the slag from a bead, we run the risk of it becoming part of the weld when we run the next bead. a good welder will generally burn it out on the next pass, but if not, there will be a chunk of slag in the bead which leaves a weak spot. slag inclusions.
Explanation: inadequate penetration defects
Explanation: referred to as worm holes, these are gas pockets trapped in the weld. a couple of reasons would be from not enough shielding gas in mig, or moisture in the flux.
Explanation: weld cracking occurs close to the time of fabrication. most forms of cracking result from the shrinkage strains that occur as the weld metal cools. it can be of hot cracks types.
Explanation: spatters are the droplets of molten material during gas welding or arc welding. a temperature difference and slag accumulation are the reason of spatter formation. welding speed is also one of the main causes of spatter. type of material used and type of welding also decide to spatter density.
Explanation: cracking in weld metal defect occur due to incorrect welding techniques. sometimes cracking may not be visible by naked eyes.
Explanation: cold cracks are those that occur after the weld metal has cooled to room temperature and may be hydrogen related.
Explanation: in precision type forging operation, the volume of the metal stock and the dies are controlled very tightly. such operations are called as precision forging which is a modern technique of forging.
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