1. Production of tapped holes and threads in brittle materials
2. Die casting
3. Machining sintered carbide diamonds etc
4. All of these
Machining sintered carbide diamonds etc
1. Tearing chips
2. Distortion of metal
3. Shearing the metal across a zone
4. Cutting the metal across a zone
Shearing the metal across a zone
1. Is greatest at positive electrode
2. Is greatest at negative electrode
3. Is same at both anode and cathode
4. Is minimum at anode and cathode
Is greatest at positive electrode
1. Abrasion of metal only
2. Electro chemical decomposition only
3. 10% electro-chemical decomposition is 90% abrasion of the metal
4. 90% electro-chemical decomposition is 10% abrasion of the metal
10\% electro-chemical decomposition is 90\% abrasion of the metal
1. EDM
2. ECM
3. ECG
4. LBM
ECM
1. Grinding pressure is low
2. Pressure is less but temperature is high
3. Temperature is very low
4. Both grinding pressure and temp are low
Both grinding pressure and temp are low
1. Nitric acid
2. Sodium sulphate
3. Caustic soda
4. Sodium Chloride
Caustic soda
1. Nitric acid
2. Sodium sulphate
3. Caustic soda
4. Sodium Chloride
Nitric acid
1. Minimum
2. Maximum
3. Constant
4. None of these
Maximum
1. 10 mm
2. 5 mm
3. 1 mm
4. 0.04 mm
0.04 mm