B.TECH - Semester 7 non conventional machining techniques Question Paper 2020 (sep)
Practice authentic previous year university questions for better exam preparation.
Sample Questions
- Distinguish traditional and non-traditional machining process.
- Analyse the industrial needs for unconventional machining process.
- Describe a few unique benefits of WJM.
- Define the Electrolytes used in ECM.
- Point out the application of electro chemical honing.
- Classify the population inversion between energy levels in LBM.
- Access the characteristics of good suspension media of the USM process.
- What do you know about nodal point clamping?
- Give the applications of water jet machining process.
- Classify the Process parameters of WJM. Answer any one full questions, each carries 20 marks.
- (a) Describe the different dielectric breakdown mechanisms in EDM.
- (b) Demonstrate the EDM, LBM, USM, WJM and AJM in terms of the energies employed. $$ (2 \times 10=20 \text { Marks) } $$
- (a) Assess the various Process parameters of wirecut EDM process.
- (b) Describe the process of EDM. its process parameters, advantages, disadvantages and applications. $$ (2 \times 10=20 \text { Marks) } $$
- (a) Describe the characteristics of electrolyte used in ECM. What are the different process parameters in ECM?
- (b) Explain the various factors that affect the MRR in case of ECG process. $$ (2 \times 10=20 \text { Marks) } $$
- (a) What are the features of LBM? Discuss the factors that affect the performance of LBM.
- (b) Describe EBM with neat sketch. What are the process parameters the affects its performance. $$ (2 \times 10=20 \text { Marks) } $$
- (a) What are the functions of the transducer and horns used in USM? List the tool materials.
- (b) Explain construction and working of USM and compare traditional abrasive machining and USM. ( $\mathbf{2} \boldsymbol{\times} \mathbf{1 0} \boldsymbol{=} \mathbf{2 0}$ Marks)
- (a) Explain the effect of abrasive grain size on the machining rate in USM.
- (b) Elaborate the needs for the development of USM. ( $\mathbf{2} \boldsymbol{\times} \mathbf{1 0} \boldsymbol{=} \mathbf{2 0}$ Marks)
- Explain in detail about the following terms of AJM and WJM process: (a) Process characteristics
- Explain in detail about the following terms of AJM and WJM process: (b) Metal removal rate $$ \text { ( } 2 \times 10=20 \text { Marks) } $$
- (a) Discuss various elements of water jet machining process with neat diagram.
- (b) Elaborate the working principle of AJM in terms of process capabilities and also write its advantages and limitations. ( $\mathbf{2} \boldsymbol{\times} \mathbf{1 0} \boldsymbol{=} \mathbf{2 0}$ Marks)