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!
Explain the electrical contact materials with examples.
Electrical contact materials: A number of elements in their pure form as copper, nickel, palladium, molybdenum, platinum, tungsten and silver are mostly acceptable make and break contact materials. All elements' alloys mentioned also used for electrical contacts. Silver is a significant contact material. Copper added to silver decreased the cost of the contact material. While a combination of tungsten and silver results in a contact material comprises the advantages of the individual metals. A silver tungsten contact material will contain electrical conductivity and high thermal. Copper contacts are utilized in control relays, tap changers and motor starter switches. Copper contacts may be utilized for currents that are alternating current or direct current up to 500A and voltages (a.c or d.c) up to 600V. Contacts create of silver and silver alloys are broadly used. Silver has better resistance to oxidation compared to copper and can be utilized for voltages (a.c or d.c) up to 600V and direct currents up to 50A and alternating currents up to 200A. These contacts are used in all forms of industrial applications as generator cut outs, relays, thermal overload devices and also thermostatic control.
1 Explain the advantages and disadvantages of optical fiber versus copper Medium of communication 2 Define multiplexing. Explain TDM 3 Describe the protocol architecture and
Production of Rotating Fields from Single-Phase Windings In this subsection we show that a single-phase winding carrying alternating current produces a stationary pulsating flu
Q. Sketch An Rc Coupled Two Stage Amplifier. Draw Its Frequency Response Curve And Account For Its Stages. The figure above shows a two stage RC coupled amplifier. The sig
Discuss the properties and uses of Cold rolled grain oriented steel. Cold rolled grain oriented steel: Grain orientation of silicon steel is acquired by a special technique
Q. Explain a common emitter configuration without a feedback. A simple common emitter transistor amplifier--having no negative feedback--is not an ideal amplifier. This is beca
#question. . =calculate the calcium carbonate equivalent hardness of calcium sulphate of 5gms present in one litre
Input Characteristics Transistors can be operated in the switching mode. If base current IB is zero transistor is in an ON state behaves as a switch. If the base cur
A transistor has (A) One p-n junction. (B) Two p-n junction. (C) Four p-n junction. (D) Five p-n junction. Ans: A transistor has two p-n junctions.
A circular ring of magnetic material has a mean length of 1m and a cross sectional area of .001m^2.A sawcut of 5mm width is made in the ring . calculate the magnetizing current req
A conical tank is shown in Figure. The tank is filled with water. Using MATLAB, determine: a. the volume of water in the tank b. the weight of the water in the tank.
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