Explore topic-wise MCQs in Advanced Machining.

This section includes 106 Mcqs, each offering curated multiple-choice questions to sharpen your Advanced Machining knowledge and support exam preparation. Choose a topic below to get started.

51.

Compared to the tool used in ECM, how should be the work piece size?

A. Greater than
B. Smaller than
C. Same as tool
D. None of the mentioned
Answer» B. Smaller than
Discussion
52.

Positively charged particles (cations) move towards which electrode?

A. Anode
B. Cathode
C. All of the mentioned
D. None of the mentioned
Answer» C. All of the mentioned
Discussion
53.

Negatively charged particles (anions) move towards which electrode?

A. Anode
B. Cathode
C. All of the mentioned
D. None of the mentioned
Answer» B. Cathode
Discussion
54.

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

A. True
B. False
Answer» C.
Discussion
55.

Which type of adjustment is to be done for gap voltages?

A. Continuous adjustment
B. Discontinuous adjustment
C. Periodic adjustment
D. All of the mentioned
Answer» B. Discontinuous adjustment
Discussion
56.

Electrolytic solution should ensure which type of anodic dissolution?

A. Uniform
B. Non-uniform
C. Low speed
D. None of the mentioned
Answer» B. Non-uniform
Discussion
57.

What are the values of current densities used in ECM?

A. 0.1 to 2 A/cm2
B. 5 to 500 A/cm2
C. 600 to 1000 A/cm2
D. 1200 to 2800 A/cm2
Answer» C. 600 to 1000 A/cm2
Discussion
58.

What are the main functions of electrolyte in Electrochemical machining?

A. Conduct machining current
B. Removal of debris
C. Maintaining constant temperature
D. All of the mentioned
Answer» E.
Discussion
59.

State whether 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.'

A. True
B. False
Answer» C.
Discussion
60.

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

A. True
B. False
Answer» B. False
Discussion
61.

Too small gap causes which of the following effects?

A. Sparking
B. Short circuit
C. All of the mentioned
D. None of the mentioned
Answer» D. None of the mentioned
Discussion
62.

Compared to the diameter to depth ratio of ES drilling, how is ECJD's ratio?

A. Lower
B. Higher
C. Same as ES
D. None of the mentioned
Answer» B. Higher
Discussion
63.

Which of the following parameters must be carefully monitored for satisfactory machining?

A. Acid temperature
B. Pressure
C. Concentration
D. All of the mentioned
Answer» E.
Discussion
64.

What are the values of voltages used in ES drilling process?

A. 10 to 40 V
B. 40 to 70 V
C. 70 to 150 V
D. 150 to 300 V
Answer» D. 150 to 300 V
Discussion
65.

What are the values of feed rates used in ES drilling process?

A. 0.01 to 0.5 mm/min
B. 0.75 to 2.5 mm/min
C. 3 to 4.5 mm/min
D. 5 to 7.5 mm/min
Answer» C. 3 to 4.5 mm/min
Discussion
66.

What are the values of tapers produced in Electrochemical jet drilling process?

A. 1 to 2 included angles
B. 5 to 10 included angles
C. 10 to 15 included angles
D. 20 to 30 included angles
Answer» C. 10 to 15 included angles
Discussion
67.

State whether following statement is true or false regarding ECJD.'In ECJD, diameter of hole produced, depend up on the throwing power of electrolyte.'

A. True
B. False
Answer» B. False
Discussion
68.

What is the value of the ratio of hole diameter to capillary diameter in ECJD?

A. 2
B. 4
C. 6
D. 8
Answer» B. 4
Discussion
69.

State whether following statement is true or false regarding ECJD?'In ECJD, there is no need of room for exit of electrolyte.'

A. True
B. False
Answer» C.
Discussion
70.

Burr is removed to a radius of _____ in ECDB process.

A. 0.01 to 0.04 mm
B. 0.05 to 0.20 mm
C. 0.25 to 0.40 mm
D. 0.50 to 0.75 mm
Answer» C. 0.25 to 0.40 mm
Discussion
71.

How are material removal rates of ECM, when compared to that of conventional methods?

A. Slower
B. Faster
C. Same
D. None of the mentioned
Answer» B. Faster
Discussion
72.

State whether 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.'

A. True
B. False
Answer» C.
Discussion
73.

What is the value of current density used in Electrochemical machining?

A. 0.01 - 0.4 A/mm2
B. 0.5 - 5 A/mm2
C. 6 - 15 A/mm2
D. 20 - 50 A/mm2
Answer» C. 6 - 15 A/mm2
Discussion
74.

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

A. True
B. False
Answer» B. False
Discussion
75.

State whether 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.'

A. True
B. False
Answer» B. False
Discussion
76.

Material is removed on which basis, in Shaped tube electrolytic machining?

A. Dissolution
B. Vaporization
C. Abrasion
D. Erosion
Answer» B. Vaporization
Discussion
77.

What are the values of pressure, used in backward pressure mode of electrolyte flow?

A. 0.01 to 0.12 MPa
B. 0.15 to 0.46 MPa
C. 0.6 to 2 MPa
D. 5 to 12 MPa
Answer» D. 5 to 12 MPa
Discussion
78.

What happens to the electrolyte conductivity if the gap increases, in ECDR?

A. Increases
B. Decreases
C. Remains same
D. None of the mentioned
Answer» B. Decreases
Discussion
79.

Electrolyte back pressure _____ the flow lines on work piece machined using ECDR?

A. Enhances
B. Eliminates
C. Maintains
D. Increases
Answer» C. Maintains
Discussion
80.

Which of the following can be used as electrolytes in STEM process?

A. Sulphuric acid
B. Nitric acid
C. Hydrochloric acids
D. All of the mentioned
Answer» E.
Discussion
81.

What is the full form of STEM in advanced machining processes?

A. Small Tool Electrode Machining
B. Small Tube Electrode Manufacturing
C. Shaped Tube Electrolytic Machining
D. Shaped Tube Electrode Machining
Answer» D. Shaped Tube Electrode Machining
Discussion
82.

What are the tolerance values for a 1.5 mm diameter hole, which is machined using STEM?

A. ± 0.025 mm
B. ± 0.050 mm
C. ± 0.075 mm
D. ± 0.100 mm
Answer» D. ± 0.100 mm
Discussion
83.

Between which of the following values, does the feed rate range?

A. 0.01 - 0.1 mm/min
B. 0.25 - 0.5 mm/min
C. 0.75 - 3 mm/min
D. 5 - 7.5 mm/min
Answer» D. 5 - 7.5 mm/min
Discussion
84.

What may the hole sizes, that can be machined using STEM process?

A. 0.02 - 0.3 mm
B. 0.5 - 6 mm
C. 8 - 20 mm
D. 50 - 76 mm
Answer» C. 8 - 20 mm
Discussion
85.

Compared to the forward voltages, how are the reverse voltages?

A. 0.01 - 0.1 times
B. 0.1 - 1 times
C. 1 - 10 times
D. 10 - 100 times
Answer» C. 1 - 10 times
Discussion
86.

What are the values of pressures used for electrolyte in STEM?

A. 10 - 100 kPa
B. 150 - 250 kPa
C. 275 - 500 kPa
D. 600 - 750 kPa
Answer» D. 600 - 750 kPa
Discussion
87.

Which of the following parts can be machined using STEM process?

A. Turbine blade cooling nozzles
B. Fuel nozzles
C. Starting holes for wire-EDM
D. All of the mentioned
Answer» E.
Discussion
88.

What may be the temperature of sulphuric acid used in STEM process?

A. 10 oC
B. 21 oC
C. 38 oC
D. 50 oC
Answer» D. 50 oC
Discussion
89.

What are the voltage values used in STEM process?

A. 1 - 4 V
B. 8 - 14 V
C. 16 - 24 V
D. 28 - 34 V
Answer» C. 16 - 24 V
Discussion
90.

What may be the temperatures of acids used, other than sulphuric acid, in STEM?

A. 10 oC
B. 21 oC
C. 38 oC
D. 50 oC
Answer» C. 38 oC
Discussion
91.

What are the limitations of STEM process?

A. Used for corrosion resistant materials
B. Hazardous waste is generated
C. Complex machining and tooling systems
D. All of the mentioned
Answer» E.
Discussion
92.

What is the percentage of electrolyte dissolved in water?

A. 1 - 5%
B. 10 - 25%
C. 40 - 70%
D. 75 - 90%
Answer» C. 40 - 70%
Discussion
93.

Which of the following are the advantages of STEM?

A. Depth to diameter ratio of 300
B. Non parallel holes can be drilled
C. No recast layer
D. All of the mentioned
Answer» E.
Discussion
94.

State whether following statement is true or false regarding ES drilling.'In ES drilling, hydrochloric acid is used for machining aluminium and its alloys.'

A. True
B. False
Answer» B. False
Discussion
95.

Which of the following are the limitations of electro chemical machining?

A. Removal of hydrogen
B. Handling the electrolyte
C. Energy consumption
D. All of the mentioned
Answer» E.
Discussion
96.

State whether following statement is true or false regarding the limitations of ECM.'In electrochemical machining, duplicating the tool is easier.'

A. True
B. False
Answer» C.
Discussion
97.

Which of the following materials can be machined using ECDB process?

A. Carbon steels
B. Copper alloys
C. Aluminium alloys
D. All of the mentioned
Answer» E.
Discussion
98.

In ECDB process, rotating and feeding the tool electrode _____ the deburring process.

A. Enhances
B. Degrades
C. Damages
D. All of the mentioned
Answer» B. Degrades
Discussion
99.

What is the value of applied voltage used in ECDB process?

A. 1 to 5 V
B. 5 to 11 V
C. 12 to 24 V
D. 25 to 50 V
Answer» D. 25 to 50 V
Discussion
100.

In order to produce a proper radius, by how much should the tool tip overlap the machined area?

A. 0.5 to 1 mm
B. 1 to 1.5 mm
C. 1.5 to 2 mm
D. 2 to 2.5 mm
Answer» C. 1.5 to 2 mm
Discussion