## #Questionbanks | Production Engineering

List of importance for Third year | Semester 5

Semester 5

**CAD - FEA**

- 3D transformation
- Explain Penalty approach used in FEM
- Explain general rule of mesh generation for finite Element formulation
- Explain Input and output devices in CAD.
- Explain sources of error in F.E.A solution
- Explain in short the properties of B-spline curves.
- Application of finite element method.
- Comparison of wire frame modeling with solid modeling.
- H-method and P-method in FEA
- Raster Scan Graphics
- Mesh compatibility in FEA
- RGB and CMY colour models.
- Geometric modeling.
- Product life cycle with CAD overlay.
- Function of graphics package.
- CSG approach and B-rep approach.
- What is product data exchange? List data exchange formats available in the market. Explain any one in detail.
- Explain pre-processing, processing and post-processing with reference to FEM software.
- Explain with an example DDA line drawing algorithm.
- Formulate a global stiffness matrix for a three noded linear element considering thermal stresses.
- Compare DDA and Bresenham's algorithm.
- Numerical based on Truss (Displacement, reactions, stresses and strains)
- Numerical based on Nodal displacements, Reaction forces and Forces in each spring.
- Numerical based on Bresenham's algorithm
- Numerical based on Bezier curve

**M.I**

- Distinguish between Accuracy and Precision
- Pick holes from following list and arrange then in decreasing order of tolerance. Indicates the holes with negative fundamental derivation. E7, M6, d8, D20, f12, g9, N16.
- Pick holes from following list and arrange then in decreasing order of tolerance. Indicates the holes with negative fundamental derivation. C8, N6, e8, D20, g12, m9, N16, A19.
- Mention a few important precautions for use of instruments so as to avoid inaccuracies in measurements.
- Taylor Hobson Talysurf.
- Tool maker’s microscope
- Torque sensors.
- Torque measurement.
- Interchangeability and its importance.
- Pneumatic comparator.
- Best size wire.
- Parkinson tester.
- Strain gauges.
- Explain constant chord. The use of tangent comparator has increased in relation to gear tooth caliper, state technical reasons for the same.
- Briefly explain the errors associated with a screw thread.
- Explain the following in brief:
- (I) sampling length (ii) lay (iii) Ra
- Numerical based on Taylor’s for gauging finished work.
- Numerical based on Thread gauge outside/inside diameter.

DJF

- Box drill jig.
- Principle if clamping.
- Centraliser.
- Equaliser.
- Jig bush with head.
- Jigs and fixtures.
- 3-2-1 principle of Location depicting case of a rectangle plate as a work piece.
- Plate jig.
- Renewable bush.
- Standard strap clamp.
- Three types of rest buttons.
- Centraliser and Equalizers.
- Allen screws and Dowels.
- Plate jig and and post jig.
- Slip bush and Renewable bush.
- Drill jig and milling fixture.
- Clamping device and Locating device.
- Jamming.
- Indexing.
- Basic steps to design of Drill Jig.
- Explain any one of them with the help of labelled sketch.
- Features of turning fixtures.
- Advantage of Jigs and fixtures.
- Ejectors.
- Design and draw a drilling to drill and two holes as shown in fig. Draw two views to the scale with dimensions.

E.D

- Elaborate on design safety and its significance. What are the guidelines and criteria to decide upon the factor of safety?
- Explain different types of riveted joints.
- Explain the various modes of riveted joints, with relevant sketches and stress equations.
- Factor of safety.
- Steps involved in design.
- Different types of Keys and their application.
- Material selection in design.
- Wahl’s stress factor.
- List the advantage and disadvantage of welded joint over the riveted joints.
- Design and sketches Stresses in curved members.
- Design and sketches Spring.
- Design of shaft
- Design of keys
- Design of couplings
- Design of riveted.
- Design of bolted.
- Design of welded.
- Numerical based on Stresses in machine components.
- Numerical based on Power transmission shaft.
- Numerical based on Pulley.
- Numerical based on Design a double riveted.

T.E

- Psychrometric chart and process.
- Vapour absorption refrigeration system.
- Simple carburetor.
- Methods to improve efficiency of a gas turbine.
- Wien's law and Kirchoff’s law.
- Advantage of multistage compression.
- Air-conditioning.
- Explain significance of volumetric efficiency and derive an expression for calculating the same for an air compressor.
- Explain battery ignition system with neat sketches.
- Explain valve timing diagram of four stroke S.I. engine.
- Derive an expression for LMTD in case of parallel flow chart exchanger.
- State and explain fourier’s law of heat conduction.
- Define:
- (i) Wet bulb temperature
- (ii) Dew point temperature
- (iii) Specific humidity
- (iv) Degree of saturation
- (v) Ton of refrigeration
- Newton’s law of cooling.
- Numerical base on Gas turbine
- Numerical base on thickness
- Numerical base on refrigeration temperature
- Numerical base on pressure.
- Numerical base on Engine parts.
- Numerical base on Heat exchanger.
- Numerical base on Single acting air compressor

MST

- Cutting Fluids
- ORS system of cool nomenclature.
- Taylor’s tool life equation.
- NRS system of tool nomenclature.
- MRS system of tool nomenclature.
- Ceramic cutting tools.
- Web Thinning of Twist Drill.
- Surface finish.
- Explain various wear mechanism of cutting tools.
- Explain the construction and working of a Milling dynamometer.
- Explain step by step the procedure used for designing of a machine reamer.
- Write a short note on composition, properties and application of H.S.S and CBN as cutting tool materials.
- Write a short note on composition, properties and application of H.S.S and Tungsten carbide as cutting tool materials.
- Derive an expression for optimum cutting speed and optimum tool life for minimum cost of production. Assume tool life to follow Taylor’s tool life equation.
- Numerical based on Flat-form tool
- Numerical based on Design round progressive broach for machining cylindrical hole.
- Numerical based on Minimum cost of production and maximum production rate criterions.
- Numerical based on Orthogonal machining.
- Numerical based on HSS
- Numerical based on MRS
- Numerical based on Lathe turning tool tripped with cemented carbide.