B.TECH - Semester 5 machine tools Question Paper 2021 (mar)
Practice authentic previous year university questions for better exam preparation.
- Name various accessories used on lathe.
- 505 : MACHINE TOOLS (MN) (2013 scheme) Time : 3 Hours Max. Marks : 100 Instruction: Answer all questions from Part A and any one from each module of Part B. PART - A
- What you mean by tool signature?
- Write Taylor's tool life equation. Discuss the effects of tool geometry on tool life.
- List the properties of tool material.
- How is return speed regulated on a Hydraulic shaper.
- What are the main differences between a turret lathe and a capstan lathe.
- Enumerate common indexing methods.
- Differentiate between dressing and truing of grinding wheels.
- What are the advantages and limitations of EDM process.
- Explain why unconventional machining process are used. ( $\mathbf{1 0} \boldsymbol{\times} \mathbf{2} \boldsymbol{=} \mathbf{2 0}$ Marks) P.T.O.
- (a) Explain the mechanism of chip formation. Also explain the conditions that promote the formation of different types of chips.
- (b) Explain any three methods used for measuring the tool wear OR
- (a) During an orthogonal machining with a cutting tool having a $20^{\circ}$ rake angle the chip thickness measured to be 0.6 mm , the uncut thickness being 0.25 mm .Determine (i) Shear plane angle (ii) Shear strain
- (a) Explain briefly the main parts of a capstan lathe with a neat sketch. 10
- (b) Explain different types of tool materials and variables affecting tool life. 10
- (a) Explain work holding devices used in a lathe.
- (b) Describe the common methods of taper turning in a centre lathe. OR
- (b) Explain different types of planer and quick return mechanism used in planer. 10 Module - III
- (a) Explain different types of milling cutters and various operations which can be performed in a milling machine.
- (b) Draw the block diagram of a horizontal milling machine and explain briefly its various parts प्रत्. HARHARY LIBRARY 10 OR
- (a) Explain the working principle of centreless grinding? What are the advantages and limitations of centreless grinding.
- (b) What are the grinding wheel parameters that influence the grinding performance? Module - IV
- (a) How do you classify the common unconventional machining?
- (b) Explain the working principle of LBM. What are the different types of lasers used in LBM?
- (a) Explain with neat sketches the working of electrochemical machining process. What are its advantages?
- (b) Explain with a neat sketch the working of explosive forming. $$ \text { ( } 4 \times 20=80 \text { Marks) } $$
Browse Previous Year Question Papers →