What is the type of welding defect caused due to poor manipulation of weld rod or a dirty joint called?
Answer: B
Under cut is a type of welding defect caused due to poor manipulation of weld rod or a dirty joint.
Enter details here
Trepanning is performed for
Answer: B
In trepanning, the cutting tool produces a hole by removing a disk-shaped piece (core), usually from flat plates. A hole is produced without reducing all the material removed to chips, as is the case in drilling. Such drills are used in deep-hole drilling machines for making large hollow shafts, long machine tool spindles etc.
Enter details here
The crystal structure of austenite is
Answer: B
Austenite is a solid solution of carbon in ɣ-iron. It has F.C.C structure. It has a solid solubility of up to 2?t 1130⁰C.
Enter details here
In up-cut milling the work piece is fed
Answer: A
No answer description available for this question.
Enter details here
A ring gauge is used to measure
Answer: A
Ring gauges are used for gauging the shaft and male components i.e. measure the outside diameter. It does not able to measure the roundness of the given shaft.
Enter details here
Chemical milling operation is performed
Answer: C
No answer description available for this question.
Enter details here
Cast iron during machining produces
Answer: B
No answer description available for this question.
Enter details here
When the temperature of a solid metal increases,
Answer: A
When the temperature of a solid metal increases, its intra molecular bonds are brake and strength of solid metal decreases. Due to decrease its strength, the elongation of the metal increases, when we apply the load i.e. ductility increases.
Enter details here
What type of fusion welding process is used for welding sheet metals of all engineering metals (except Cu, Ag) in automobile and air craft industries, pipe and tubing production?
Answer: C
Resistance Welding is used for welding sheet metals of all engineering metals (except Cu, Ag) in automobile and air craft industries, pipe and tubing production. It’s a type of fusion welding process.
Enter details here
What is the type of shielding gas for GTAW (Gas Tungsten Arc Welding) used for carbon steels only called?
Answer: B
Argon CO₂ is used for carbon steel only. Usually argon is used as a shielding gas. Sometimes helium is used for welding thicker sections since, light voltages are possible with this gas, and helium is of course a costly gas.
Enter details here