General Studies · Machining and Machine Tools
किस प्रकार के ड्रिल में उसकी लंबाई के अनुदिश दो या दो से अधिक पेचदार सर्पिल खांचे (helical spiral flutes) बने होते हैं?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1फ्लैट ड्रिल (Flat drill)
- 2कोर ड्रिल (Core drill)
- 3स्ट्रेट फ्लूट ड्रिल (Straight flute drill)
- 4ट्विस्ट ड्रिल (Twist drill)✓
सही उत्तर देखें
ट्विस्ट ड्रिल (Twist drill)
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