Workshop Technology
The current in electric resistance welding can be regulated by

Varying the input supply
Changing the primary turns of the transformer
Any one of the listed here
Changing the secondary turns of the transformer

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Workshop Technology
A progressive limit gauge has

Separate 'Go' and 'Not go' members
None of the listed here
'Go' and 'Not go' member on the same side of the gauge
'Go' member at one end and 'Not go' member at the other end

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Workshop Technology
A three high rolling mill consists of three rolls placed one above the other. Which of the following statement is correct?

The bottom and middle roll rotate in the same direction
The upper and middle rolls rotate in the same direction whereas the bottom roll rotates in opposite direction
Any one of the above
The upper and bottom rolls rotate in the same direction whereas the middle roll rotates in opposite direction

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Workshop Technology
Linde welding uses

Neutral flame and leftward technique
Carburising flame and rightward technique
Neutral flame and rightward technique
Oxidizing flame and leftward technique

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