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State whether the following statement is true or false about electrolyte in ECM. “Machinability in ECM is enhanced, when electrolyte is heated.”

Correct Answer: True
Machinability is increased, when electrolyte is heated, as heating increases the specific conductivity of the electrolyte.

State whether the following statement is true or false regarding the limitations of ECM. “In ECM, cleaning and oiling of work piece need not be done after machining.”

State whether the following statement is true or false regarding the environmental impacts of ECM. “In ECM, accumulation of toxic compounds is due to nitrate reduction at tool cathode.”

Consider the following statements.
1. All valid arguments contain only true premises and a true conclusion.
2. Some valid arguments contain only false propositions - false premises and a true conclusion.
3. All valid arguments contain only false propositions all premises are false, conclusion is false as well.
Which of the above statements is correct?

Land masses are heated and cooled much faster than water bodies. Identify the true statements in this regard:
I. Land gets heated by conduction
II. Water has higher specific heat
III. Only the surface layers of water are heated
IV. Water gets heated by convection

Pick out the wrong statement about the machinability of metals. Machinability of a metal

State whether the following statement is true or false regarding the theory of ECM. “Application of P.D (potential difference) lead to occurrence of several reactions.”

State whether the following statement is true or false regarding the tools of ECM. “With computer integrated manufacturing (CIM), cathodes are produced at high costs and less accurately.”

State whether the following statement is true or false regarding the electrolytic solution. “In ECM, formation of passive film is recommended.”

State whether the following statement is true or false regarding the electrolytes in ECM. “In Electrochemical machining, electrolytes should deposit on cathode electrodes.”

State whether the following statement is true or false regarding the working principles. “In ECM, grain boundary attacks remove the grains through electrolytic forces.”