Manufacturing And Production Technology
If the flame of the welding torch is directed towards the progress of welding, then what will you call the welding technique?

Flux cored ARC welding
Forehand welding
Electro slag welding
Pulsed spray welding

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Manufacturing And Production Technology
Glazing in grinding wheels takes place when the

Wheel is too soft and wheel revolves at a very high speed
Wheel is too soft or wheel revolves at a very slow speed
Wheel is too hard and wheel revolves at very slow speed
Wheel is too hard or wheel revolves at a very high speed

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Manufacturing And Production Technology
Work speed of circular electrode of 220 mm diameter for carrying out seam welding at 4 welds per cm on 1.6 mm thick mild steel tube. Welding cycle consists of 3 cycles ‘on’ and 2 cycles ‘off’ Power supply is at 50 Hz. Calculate R.P.M. and energy requirement of the above circular electrodes assuming effective resistance between electrodes as 100 ohm.

6.8 rpm, 6 joules
22 rpm, 600 joules
5.03 rpm, 600 joules
2.17 rpm, 600 joules

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