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When the value of helix angle increases in drills, the value of required torque for rotation of drill will

When the value of helix angle increases in drills, the value of required torque for rotation of drill will Correct Answer Decrease

Torque required is inversely proportional to helix angle of drill. When the value of helix angle increases in drills, the value of required torque for rotation of drill will increase.

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Which of the following are percussion drills? (i) Shot drill (ii) Diamond drill (iii) Wagon drill (iv) Churn drill
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(iii) Wagon drill
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