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GATE Mechanical 1990 Question

Signle Correct Answer
Penetration is increased by
A
Increasing welding current and welding speed
B
Increasing welding current and decreasing welding speed
C
Decreasing welding current and welding spped
D
Decreasing welding current and increasing welding speed

GATE Mechanical 1990 Question

Signle Correct Answer
At small variations of are length at operating conditions, the manual metal are welding transformer provides nearly
A
Constant power
B
Constant power factor
C
Constant voltage
D
Constant current

GATE Mechanical 1991 Question

Signle Correct Answer
For gas welding a particular job using a neutral oxy-acetylene flame the acetylene consumption was $$10$$ ltrs. The oxygen consumption from the cylinder in liters will be
A
$$5$$
B
$$10$$
C
$$15$$
D
$$20$$

GATE Mechanical 1992 Question

Signle Correct Answer
For resistance spot welding of $$1.5$$ $$mm$$ thick steel sheets, the current required is of the order
A
$$10$$ $$Amp$$
B
$$100$$ $$Amp$$
C
$$1000$$ $$Amp$$
D
$$10,000$$ $$Amp$$

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