Download AKTU B-Tech 5th Sem 2017-2018 NME 503 Manufacturing Science And Technology Ii Question Paper

Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 5th Semester (Fifth Semester) 2017-2018 NME 503 Manufacturing Science And Technology Ii Question Paper

Printed pages: 02 Sub CodezNME-503
Paper Id: IIIEIIIE Roll No. KW
B.TECH
(SEM V) THEORY EXAMINATION 2017-18
MANUFACTURING SCIENCE AND TECHNOLOGY-II
T ime: 3 Hours T otal Marks: 100
N Me: 1. Attempt all Sections. If require any missing data; then choose suitably.
SECTION A
1. Attempt all questions in brief. 2 x10 = 20
(a) What is Arc Blow?
(b) What do you understand by boring reaming and broaching?
(c) What do you understand by continuous chip with BUE.
(d) What is the difference between end milling and face milling.
(6) Name the types of grinding wheel wear.
(f) What is the main point of difference between dressing and truing?
(g) What is center less grinding?
(h) What do you understand by HAZ in welding?
(1) Write three main differences between TIG and MIG.
(j) Enlist various defects during welding?(name only)
SECTION B
2. Attempt any three of the following: 10 x 3 = 30
(a) Explain grinding wheel specification.
(b) Discuss Soldering and Brazing process.
(c) What is Arc welding?Discuss different types of arc in arc welding.
((1) During an orthogonal cutting the following data is obtained:
Rake ang|e=15? , chip thickness ratio: 0.39 , uncut chip thickness t=0.6mm , width of
cut b= 3.3mm , yield shear stress of material in shear=280 N/mm2 , average
coefficient of friction on the tool face=0.7 , calculate normal and tangential forces on
the tool face.
(6) Explain the working mechanism of shaper machine. What are the main differences in
shaper and planner?
SECTION C
3. Attempt any one part of the following: 10 x 1 = 10
(a) Explain Merchant?s force circle diagram and derive the merchant?s shear angle
relationship.
(b) What are the uses of cutting fluids? Discuss some of the cutting fluids used during
machining. Explain Crater wear and flank wear
4. Attempt any onepart 0f the following: 10 x 1 = 10
(a) What are the methods of taper turning in a lathe? Explain their specific advantages
and limitations.
(b) Write the difference between turret lathe and capstan lathe. What are the uses of
(i) Lead Screw (ii) feed rod (iii)Tai| stock (iv)Half nut (v) Compound Slide in lathe
machine.

5. Attempt any one part of the following: 10 x 1 = 10
(a) Explain the mechanics of metal removal process in ECM. Also discuss the
electrochemistry behind ECM process and find the relation for volumetric removal
rate.
(b) What does LASER stands for? Explain its working with neat sketch. How metal
removal takes place by LBM.
6. Attempt any one part of the following: 10 x 1 = 10
(21) Discuss the TIG & MIG welding in detail with the help of neat sketches?
(b) Explain the principle & working of Atomic-hydrogen welding process? What is
resistance welding write its advantages, limitation and applications.
7. Attempt any onepart 0f the following: 10 x 1 = 10
(21) Describe any four types of bonds for bonded abrasive on a grinding wheel. Explain
grinding wheel wear in detail
(b) Enlist the typical categories of grinding machines and briefly explain them. What are
the cylindrical grinding and centerless grinding