Question

Q47. In tape preparation for an NC machine tool, the codes S624 would represent spindle speeds of
(A) 624 rpm and 246 rpm
(B) 624 rpm and 240 rpm
(C) 624 rpm, 240 rpm and 2346 rpm
(D)
240 rpm and 246 rpm​

Answer 1

In tape preparation for an NC machine tool, the codes S 624 would represent spindle speeds of (D)  240 rpm and 246 rpm​

Extra Information:

NC machine tool =>

1. It is a tool through which we can automate various machine tools like boring tools etc.

2. NC machine tool is also known as computer numerical control (CNC).

3. NC machines came in existence in the year 1940.

4. The spindle speed is programmed in rpm which gets represented by a three digit number.

5. In the code S 624, 6 represent that there are three digits in rpm and 24 represents that three digit number should start with it. So, it will be 240 rpm and 246 rpm​.