Manufacturing And Production Technology
A right hand tool on a lathe cuts most efficiently when it travels

Across the bed
From right to left end of the lathe bed
With the help of a compound slide
From left to right end of the lathe bed

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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.

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

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