Question

Consider the following statements:
1. As the cutting speed increases, the cost of production initially reduces, then after an optimum cutting speed it increases.
2. As the cutting speed increases the cost of production also increases and after a critical value it reduces.
3. Higher feed rate for the same cutting speed reduces cost of production.
4. Higher feed rate for the same cutting speed increases the cost of production.
Which of the statements given above are correct?

• A. $1$ and $3$
• B. $2$ and $3$
• C. $1$ and $4$
• D. $3$ only

Answer 1

The correct option is A $1$ and $3$

$1$ and $3$