(Thinn mould) Investment casting (Precision) Centrifugal (without core) Continuous Casting (Open)
Advantages Design flexibility Reduced costs Dimensional accuracy Versatility in production
Disadvantages Lot of molten metal is wasted in riser & gating Cast
change their properties as a result Polycarbonate Amorphous material, excellent Impact Strength, clarity,
& optical properties Polyethylene High Density widely used, inexpensive, thermoplastic, easy to process,
good to excellent chemical resistance, soft
surfaces No filler metal, flux, or shielding gases normally used Process yields a narrow HAZ Can
be used to join dissimilar metals Widely used commercial process, amenable to automation and mass
production Fig: Friction welding (FRW): (1) rotating part, n
argon,helium,carbon dioxide,various other gas mixtures Metal can be transferred by 3 methods :
Spray transfer Globular transfer Short circuiting Process capabilities GMAV process is suitable for
welding a variety of ferrous and non-ferrous metals Process
(2011/2010 3-4 )
Women's initial education was obtained in the family. Scholarship consisted of learning by rote such
texts as Hadith, fiqh and tafsir. At later stages, the girls could have access to male scholars and teacher
and even receive certificat
(2011/2010 3-4 )
Knowles, M. (1986). The Adult Learner: A Neglected Species. Houston, Texas: Golf Publisher
Company. Al-Makdisi, G. (1991). The Rise of Colleges, the Madrasa and University in Medieval Islam.
Edinburgh: Edinburgh University Press. Massia
envelope is called Carburizing flame (30000c) Addition of little more oxygen give a bright whitish cone
surrounded by the transparent blue envelope is called Neutral flame (It has a balance of fuel gas and
oxygen) (32000c) Used for welding steels, alumini
materials Used to produce mainly electrical products Thermoset granules are compressed in a
heated mold to shape required. Examples: plugs, pot handles, dishware http:/www.francisxavier.ac.in
Transfer Molding A process of forming articles by fusing a plas
Temperatures in PAW reach 28,000 C (50,000 F), due to constriction of arc, producing a plasma jet of
small diameter and very high energy density Resistance Welding (RW) A group of fusion welding
processes that use a combination of heat and pressure to acc
is too thin. b) Cold Shut A cold shut occurs when two portion of the metal flow together, but there is lack
of fusion between them due to premature freezing, Its causes are similar to those of a Misruns. c) Cold
Shots When splattering occurs during pourin
reach new audiences. You can search through the full text of this book on the web at
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http:/www.francisxavier.ac.in ME6302 MANUFACTURING TECHNOLOGY I NOTES
http:/www.francisxavier.ac.in UNIT I Metal Casting Processes Manufacturing
industry, and energy-related engineering production. Forward extrusion Forward extrusion reduces slug
diameter and increases its length to produce parts such as stepped shafts and cylinders. backward
extrusion In backward extrusion, the steel flows back a
blades: blanking, piercing, notching, trimming Classifications of Shearing Processes Slitting Piercing
Blanking Notching Shaving Trimming Cutoff Dinking http:/www.francisxavier.ac.in Slitting
shearing process used to cut rolls of sheet metal into several
possible without tearing the metal. Can be done Hot or cold Drawing Section of material reduced by
pulling through die. Similar to extrusion except material is under TENSILE force since it is pulled through
the die Various types of sections: - round, squa
Poverty Reduction, Palgrave Macmillan, New York, pp. 211-243. - Wang, J. Y. and M. Blomstrom (1992),
Foreign Investment and Technology Transfer: A Simple Model, European Economic Review, vol. 36, pp.
137-55. - Winters, A.L. (2000), Trade, Trade Policy and
heating them to suitable temperatures with or without the application of pressure or by the application
of pressure alone, and with or without the use of filler material. Welding is used for making permanent
joints. It is used in the manufacture of automo
processes Explosive forming Shearing and blanking Stretch forming Deep drawing Progressive
forming Punches and dies are designed so that successive stages in the forming of the part are carried
out in the same die on each stroke of the press. Progressive
Sizing Process of squeezing all or selected areas of forgings, ductile castings, or powder metallurgy
products to achieve a desired thickness or precision Riveting Process where a head is formed on the
shrank end of a fastener to permanently join sheets o
effect as a crack. Prevented by proper technique/cleanliness.Segregation Condition where some regions
of the metal are enriched with an alloy ingredient and others arent. Can be prevented by proper heat
treatment and cooling. Porosity The formation of tin
Staking Coining Burnishing Extrusion Peening Hubbing Riveting Thread Rolling ROLLING
Process used in sheets, strips, bars, and rods to obtain products that have smooth surfaces and accurate
dimensions; most cold-rolling is performed on four-high or cluste
heat for welding is provided by a highly-focused, highintensity stream of electrons striking work surface
Electron beam gun operates at: High voltage (e.g., 10 to 150 kV typical) to accelerate electrons
Beam currents are low (measured in milliamps) Powe
Known as power spinning, flow turning, hydro-spinning, and spin forging Produces axisymmetric
conical or curvilinear shape Single rollers and two rollers can be used It has less wastage of material
Typical products are rocketmotor casing and missile nos
,Electronics 2007 We, W, ,7,7u_._,w_w_W ._,_._ Senterw ,
1 With fixed value capacitor C and variable voltage V across it, the energy
stored in the capacitor is
a) CV2 b) 0.5 cv2 c) 2 cv2 d) cv
2 A dc voltage V is applied to a series RL circuit. The steady
Electronics200641 _ _ _ ' Set-B: 7
1 - The valueuofeC which-gives the.
critical damping in? the given .
circuit is
a) 2F b) 4F c) 8F 0 d) 1F
2 A series RLC circuit resonates at 3 MHz and has 3-dB bandwidth of 10
kHz. The Q of the circuit at resonance
ELECTRONICS CAREER
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1. Differential amplifiers are used in
a. instrumentation amplifiers
b.
SESSION - 1
Graduate Aptitude Test in Engineering
Notations :
Question Paper Name:
Number of Questions:
Total Marks:
EC: ELECTRONICS AND COMMUNICATION ENGINEERING 31st Jan Shift1
65
100.0
Wrong answer for MCQ will result in negative marks, (-1/3) for 1 ma
GATE 2013 - Brief Analysis by Mr B.Singh (CMD- Made Easy Education)
The analysis given below is by Mr B.Singh (Ex-IES),CMD of MADE EASY Education, renowned &
most respected teaching expert who have qualified prestigious IES, GATE & PSUs examination
severa
I A-GTD-0-SAAA I
ELECTRONICS AND
TELECOMMUNICATION EJVGINEERING
Paper I
(Conventional)
ITime Allowed : Three Hours I IMaximum Marks : 200 I
INSTRUCTIONS
Please read each of the following
before attempting questions.
instro~.ctions
carefully
Candidate shou
|EC|
GATE-2016-PAPER-02
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General Aptitude
Q. No. 1 5 Carry One Mark Each
1.
Key:
2.
Key:
Based on the given statements, select the appropriate option with respect to grammar and
usage.
Statements
(i) The height of Mr. X is 6 feet.
(ii) Th
