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For the following questions answer them individually
A 50mm diameter steel rod was turned at 284 rpm and tool failure occurred in 10 minutes. The speed was changed to 232 rpm and the tool failed in 60 minutes. Assuming straight line relationship between cutting Speed and tool life, the value of Taylorian Exponent is
A milling machine has the following two index plates supplied along with the indexing head:
Plate 1: 15, 16,17,18, 19, 20, hole circles
Plate 2: 21,23,27,29,31,33, hole circles
It is proposed to mill a spur gear of 28 teeth using simple indexing method. Which one of the following combinations of index plate and number of revolutions is correct?
The initial blank diameter required to form a cylindrical cup of outside diameter ’d’ and total height ‘h’ having a corner radius ‘r’ is obtained using the formula
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