welding

The welding process commonly used for fabricating tailor-welded blanks of dissimilar thickness for automotive applications is

During a welding operation, thermal power of 2500 W is incident normally on a metallic surface. As shown in the figure below (figure is NOT to scale), the heated area is circular....

The welding process commonly used for fabricating tailor-welded blanks of dissimilar thickness for automotive applications is

The most suitable electrode material used for joining low alloy steels using Gas Metal Arc Welding (GMAW) process is

The most suitable electrode material used for joining low alloy steels using Gas Metal Arc Welding (GMAW) process is

Two surfaces P and Q are to be joined together. In which of the given joining operation(s), there is no melting of the two surfaces P and Q for creating the joint?

Two surfaces P and Q are to be joined together. In which of the given joining operation(s), there is no melting of the two surfaces P and Q for creating the joint?

Two mild steel plates of similar thickness, in butt-joint configuration, are welded by gas tungsten arc welding process using the following welding parameters. $$ \begin{array}{|l|...

A spot welding operation performed on two pieces of steel yielded a nugget with a diameter of 5 mm and a thickness of 1 mm. The welding time was 0.1 s. The melting energy for the s...

Which one of the following welding methods provides the highest heat flux (W/mm²)?

A gas tungsten arc welding operation is performed using a current of 250 A and an arc voltage of 20 V at a welding speed of 5 mm/s. Assuming that the arc efficiency is 70%, the net...

The type of weld represented by the shaded region in the figure is

A welding operation is being performed with voltage = 30 V and current = 100 A. The cross-sectional area of the weld bead is 20 mm². The work-piece and filler are of titanium for w...

The welding process which uses a blanket of fusible granular flux is

Under optimal conditions of the process the temperatures experienced by a copper work piece in fusion welding, brazing and soldering are such that

A $$DC$$ welding power source has a linear voltage-current $$(V$$-$$I)$$ characteristic with open circuit voltage of $$80V$$ and a short circuit current of $$300A.$$ For maximum ar...

Within the Heat Affected Zone (HAZ) in a fusion welding process, the work material undergoes

Which one among the following welding processes uses non-consumable electrode?

Which of the following is a solid state welding process.

A $$DC$$ welding machine with a linear power source characteristic provides open circuit voltage of $$80V$$ and short circuit current of $$800A,$$ during welding with the machine ,...

Which of the following arc welding processes does not use consumable electrode

For butt welding $$40mm$$ thick steel plates, when the expected quantity of such jobs is $$5000$$ per month over a period of $$10$$ years, choose the best suitable welding process...

The voltage-arc length characteristics of a $$DC$$ arc is given by $$V=20+4L.$$ Where $$L$$ is in $$mm$$. During a welding operation arc length is expected to vary between $$4$$ an...

Welding of $$C40$$ steel plate of $$10mm$$ thickness required a current of $$16$$amps, while it was $$360$$amps when the plate thickness was increased by $$50\% $$. Estimate the we...

Preheating before welding is done to