Advanced Machining Processes Mcqs

Q:

Which of the following electrolytes can be used for high speed polishing?

A) Sodium chloride B) Sodium nitrate
C) Sodium chloride & Sodium nitrate D) None of the mentioned
 
Answer & Explanation Answer: A) Sodium chloride

Explanation: Sodium chloride electrolyte can be used for high speed polishing in Electro chemical buffing process.

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17
Q:

Which of the following factors control the polishing speed in the process of ECB?

A) Current density B) Electrolyte type
C) Work piece material D) All of the mentioned
 
Answer & Explanation Answer: D) All of the mentioned

Explanation: The factors that control the polishing speed are current density, electrolyte time, work piece material.

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16
Q:

What are the values of electrolyte flow rates used in ECB process?

A) 1 – 10 L/min B) 10 – 100 L/min
C) 100 – 1000 L/min D) 1000 – 10000 L/min
 
Answer & Explanation Answer: A) 1 – 10 L/min

Explanation: The values of electrolyte flow rates used in ECB process range between 1 – 10 L/min.

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21
Q:

What are the values of contact pressures used in ECB process?

A) 1 – 6 g B) 10 – 60 g
C) 100 – 600 g D) 1000 – 6000 g
 
Answer & Explanation Answer: C) 100 – 600 g

Explanation: The values of contact pressure used in the ECB process are between 100 and 600 g.

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15
Q:

What are the values of buffing speeds used in ECB process?

A) 0.1 – 0.6 m/s B) 1 – 6 m/s
C) 10 – 16 m/s D) 100 – 600 m/s
 
Answer & Explanation Answer: B) 1 – 6 m/s

Explanation: The value of the buffing speed in Electro chemical buffing is about 1 – 6 m/s.

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17
Q:

What are the values of the current densities used in ECB process?

A) 0.01 – 0.7 A/cm² B) 0.1 – 7 A/cm²
C) 1 – 14 A/cm² D) 21 – 42 A/cm²
 
Answer & Explanation Answer: B) 0.1 – 7 A/cm²

Explanation: The current densities used in the process of ECB range between 0.1 and 7 A/cm².

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14
Q:

What can be the concentration of Sodium chloride used in ECB?

A) 0.1 – 0.5 g/L B) 1 – 5 g/L
C) 10 – 50 g/L D) 100 – 500 g/L
 
Answer & Explanation Answer: D) 100 – 500 g/L

Explanation: The concentration of sodium chloride solution used for machining in ECB is about 100 – 500 g/L.

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11
Q:

Which of the following electrolytes are used ECB process?

A) Sodium chloride solution B) Sodium nitrate solution
C) Sodium chloride & nitrate solution D) None of the mentioned
 
Answer & Explanation Answer: C) Sodium chloride & nitrate solution

Explanation: Sodium chloride and sodium nitrate are the electrolytes that are used for machining purpose in the process of Electro chemical buffing.

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