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What are the surface roughness values obtained while machining spherical surfaces using Electro discharge machining?

What are the surface roughness values obtained while machining spherical surfaces using Electro discharge machining? Correct Answer <0.1 µm

The surface roughness values obtained while machining of spherical surfaces are <0.1 µm in Electro discharge machining.

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The figure below shows a symbolic representation of the surface texture in a perpendicular lay orientation with indicative values (I through VI) marking the various specifications whose definitions are listed below. P: Maximum Waviness Height (mm); Q: Maximum Roughness Height (mm); R: Minimum Roughness Height (mm); S: Maximum Waviness Width (mm); T: Maximum Roughness Width (mm); U: Roughness Width Cutoff (mm); The correct match between the specifications and the symbols (I to VI) is
Two centrifugal pumps P and R are available for use in a pipe flow system and their head-discharge characteristics are as follows. Pump P Pump R Discharge (cumecs) Head (m) Discharge (cumecs) Head (m) 0 40 0 45 0.12 35 0.14 40 0.2 28 0.24 35 0.3 18 0.3 28   The following statements (S1, S2, and S3) pertain to the head and discharge values during actual operation. Neglect losses in the system. Which of the following statements are correct? S1: When the two pumps P and R are connected in parallel, the discharge is 0.36 cumecs corresponding to a head of 35 m. S2: When the two pumps P and R are connected in parallel, the discharge is 0.36 cumecs corresponding to a head of 70 m. S3: When the two pumps P and R are connected in series, the discharge is 0.3 cumecs corresponding to a head of 46 m.
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Which motion of tool is used for machining spherical surfaces in Electro discharge machining?
Using of a mate electrode in Electro discharge machining _____________ the surface roughness of material.
In Electro discharge machining, materials with low melting point have which type of surface roughness?
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What are the values of finish obtained by machining work piece thorough Electro discharge sawing?