Typical machining operations are to be performed on hard-to-machine materials by using the processes listed below. Choose the best set of Operation- Process combinations Operation P. Deburring (internal surface) Q. Die sinking R. Fine hole drilling in thin sheets S. Tool sharpening Process 1. Plasma Arc Machining 2. Abrasive Flow Machining 3. Electric Discharge Machining 4. Ultrasonic Machining 5. Laser beam Machining 6. Electrochemical Grinding

Typical machining operations are to be performed on hard-to-machine ma

1.	Typical machining operations are to be performed on hard-to-machine materials by using the processes listed below. Choose the best set of Operation- Process combinations Operation P. Deburring (internal surface) Q. Die sinking R. Fine hole drilling in thin sheets S. Tool sharpening Process 1. Plasma Arc Machining 2. Abrasive Flow Machining 3. Electric Discharge Machining 4. Ultrasonic Machining 5. Laser beam Machining 6. Electrochemical Grinding
A.	P-1, Q-5, R-3, S-4
B.	P-1, Q-4, R-1, 5-2
C.	P-5, Q-1, R-2, S-6
D.	P-2, Q-3, R-5, S-6
Answer» E.

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