Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
The experimental set-up of Electron-beam welding.
In the electron-beam process, electrons are emitted from the heated filament called the cathode and then focused into a beam which is directed at the welding point. This electron beam is accelerated by a high difference of potential voltage between the work-piece and the cathode filament. The cathode within the electron-beam gun releases the electrons, which travel through a series of focusing lenses, causing the electrons to converge on one another to form the beam. The electrons are not free flowing but are instead greatly accelerated by the tremendous difference of potential voltage between the cathode and anode. The speed of these accelerated particles range from 30,000 to 1,20,000 miles/sec, depending upon the voltage of the unit.
When the beam strikes the welding point, the kinetic energy of the high-speed electrons is converted into heat. The heat is great enough to melt and fuse the metal. The greater the kinetic energy, the greater the amount of heat released and by this energy the welding process is completed.
Ans.(b) The soldering is a method of joining similar or dissimilar metals by means of a filler metal (called solder) which melts at a relatively low temperature i.e. less than 427ºC. Although soldering is done below 427ºC generally the solde3rs used have a melting point between 180ºC to 270ºC.
QUESTION 7 As a forensic materials expert – you have been asked to identify a metallic powder found on the clothing of someone suspected of fabricating an incendiary device used i
The self lubricating bearing is a typical application of metal powder parts or powder metallurgy process. The self lubricating bearings made from brass, iron, aluminium bronze etc,
Question: (a) What are the criteria that a frequency planner and a network engineer need to consider during cellular planning and design. (b) Assuming that you work as a c
Small Business Management Case. Go to the page 215 Kelly Grill. Three questions need to be addressed based on Ch 7. Go to www.coursesmart.com sign in user name: Waleed122@windowsli
A steel cylinder 10 cm in diameter and 10 cm long is initially at 300 0C. it is immersed in an oil bath which is maintained at 40 0C, with h= 280 W/m2. 0C. Find the temperature at
Control Surface Effectiveness and Reversal To discuss the effectiveness and loss of a control surface, we allow a rigid rotation δ of the flap set by a flight control system (o
The aerodynamic flight controls of a typical aeroplane include ailerons (British: ξ ("Xi"); US: da or δa), elevator (British: η ("eta"); US de or δe), and rudder (British: ζ ("zeta
Explain different types of intakes of aircraft
Resistive transducers Linear or rotary potentiometers can be adapted to measure displacement, possibly through mechanical gearing and linkages. The displacement is registered a
It is recommended that if possible you should buy a copy of this book. It will prove useful for the new fourth year configurational aerodynamics module also. Blackwells bookshop ha
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd