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411.

Which of the following process will be preferred for joining thin foils?

412.

During arc welding if the current is too low, it is likely to result in

A.	Poor penetration	B.	Excess piling up of weld metal
C.	Excessive electrode consumption	D.	All of the above
E.	None

413.

Plug welded joints are used

A.	To join two pieces of metal in the same manner as riveted joint metals	B.	To join a circular metal with a flat job
C.	For jobs carrying shear stress	D.	For jobs of dissimilar materials
E.	For welding at selected spots only

414.

For resistance welding

A.	Voltage is low and current is high	B.	Voltage is high and current is low
C.	Both voltage and current are high	D.	Both voltage and current are low
E.	None of the above

415.

Which of the following welding process is preferred for wrought iron?

416.

For which of the following material TIG welding is preferred?

417.

The gases used in tungsten inert gas welding are

418.

Which of the following material is difficult to be spot welded?

419.

In which of the following welding process the two pieces to be joined are over-lapped and placed between two electrodes?

420.

Which of the following is a multispot welding process?