Manufacturing And Production Technology
For turning small taper on long workpiece, the suitable method is

By swiveling the compound rest
By setting over the tail stock
By a form tool
By a taper turning attachment

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

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Manufacturing And Production Technology
The grooving is an operation of

Enlarging the end of a hole cylindrically
Beveling the extreme end of a workpiece
Reducing the diameter of a workpiece over a very narrow surface
Embossing a diamond shaped pattern on the surface of a workpiece

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