Correct answer: (A) Conventional drilling with a carbide drill
Explanation
For this ordinary, accessible through-hole in machinable steel, carbide drilling offers rapid removal and controlled diameter. EDM and ECM add setup and have lower practical productivity here, while plasma machining gives poorer hole accuracy. **A**.
More Machining questions
GATE 2025 PI Q30– In orthogonal straight turning, feed is 0.1 mm/rev and cut depth is 0.5 mm. ASA side…
GATE 2025 PI Q39– Match grinding terms P: loading; Q: glazing; R: dressing; S: truing, with definitions 1:…
GATE 2025 PI Q50– Drill a 10 mm through-hole in 30 mm mild-steel plate at 600 rpm and feed 0.3 mm/rev.…
GATE 2025 PI Q52– Orthogonal cutting uses rake angle 10°, cutting force 900 N and thrust force 275 N. Find…
GATE 2024 PI Q55– Turn a 160 mm diameter,190 mm long workpiece at cutting speed 80π m/min and feed 0.2…
GATE 2024 PI Q58– Orthogonal turning uses cutting speed 2 m/s, feed 0.2 mm/rev and depth 2 mm. Specific…