complained bitterly‚ I can feel it from the tone of her a voice that she is not happy at all. The complain was that the 2.5kva automated voltage regulator(AVR) she bought from my shop is bad and the AVR had burnt her 2.5kva stator some call it feed coil. I couldn’t say much because I was buying and transacting business in
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"changing control device. The stator winding of the motor consists of six coils. By combing these in different ways‚ the winding can be given in different numbers of pairs of poles. The motor has two speeds‚ the only available ratio being 1:2.the stator winding is delta-connected for the lower speed and higher number or pairs of poles‚ two coils being connected in series to make up each leg of the winding. At the higher speed‚ two coils are connected in parallel each leg and the winding is double-star connection
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Magnetic particle inspection (MPI) - Is a non-destructive testing (NDT) process for detecting surface and slightly subsurface discontinuities in ferroelectric materials such as iron‚ nickel‚ cobalt‚ and some of their alloys. The process puts a magnetic field into the part. The piece can be magnetized by direct or indirect magnetization. Direct magnetization occurs when the electric current is passed through the test object and a magnetic field is formed in the material. Indirect magnetization occurs
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perfect position. There is so much I can think of. But‚ here is some more info on the Web shooter. First‚ the "works" of the Web shooter. The Web shooter has a heating coil in it. The heating coil is used for burning acetone. When the pressure valve is opened‚ it releases the pressurized web fluid. Which then goes through the heating coil. While this happens‚ the acetone will burn off and let the chemicals bond into a fiber. Now you’re probably wondering how does it shoot out? It gets out from...GAS
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INTRODUCTION Tachogenerator is an electromechanical device which generates an electrical output directly proportional to the speed of the rotating systems. Tachogenerators are basically transducers. This transducer converts the speed of rotation directly into electrical signal. The angular speed is converted into a directly dependent voltage signals. The voltage thus generated is fed to a speedometer for speed measurement and /or used as a feedback signal for controlling the speed of a rotating
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ABSTRACT Camless internal combustion engines offer major improvements over traditional engines in terms of efficiency‚ maximum torque and power‚ pollutant emissions. Electromechanical valve actuators are very promising in this context‚ but still present significant control problems. Low valve seating velocity‚ small transition time for valve opening and closing‚ unavailability of position sensor are the main objectives to be considered in the design of the valve control system. Actuator physical
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6 Inductance‚ Capacitance‚ and Mutual Inductance Assessment Problems AP 6.1 [a] ig = 8e−300t − 8e−1200t A v=L dig = −9.6e−300t + 38.4e−1200t V‚ dt 38.4e−1200t = 9.6e−300t t > 0+ v(0+ ) = −9.6 + 38.4 = 28.8 V [b] v = 0 when or t = (ln 4)/900 = 1.54 ms [c] p = vi = 384e−1500t − 76.8e−600t − 307.2e−2400t W dp = 0 when e1800t − 12.5e900t + 16 = 0 [d] dt Let x = e900t x = 1.45‚ x = 11.05‚ and solve the quadratic x2 − 12.5x + 16 = 0 t= ln 1.45 = 411.05 µs 900 ln 11.05 = 2.67 ms 900 t= p is
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CONTENTS 1. INTRODUCTION 2. DESIGN PRINCIPLE 3. CIRCUIT DESCRIPTION a. Power supply b. Under voltage/over voltage detector c. NOR Gate (OR and NOT gate) d. Bi-stable / Latch e. Relay driver f. Buzzer Driver 4. FUTURE EXPANSION 5. CONCLUSION INTRODUCTION The protection system is one o the important aspect on which major manufacturers is concentrating. The companies like L&T‚ SIMENS etc. The protection system not only provides durability
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many tons of coils should be produced to bring in the greatest total
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CONCEPT OF WIRELESS ELECTRICITY (Wi-Tricity) Our forefathers marveled at the invention of glowing light bulbs by Thomas Edison in 1879. However‚ to us 21st centurions‚ the light bulb is nothing out of the ordinary. When computers‚ cell phones‚ laptops‚ iPods‚ etc. were invented our antennas tweaked. Now this is what you call invention! However‚ as time’s progressing we are getting used to these devices. In fact‚ charging all these appliances has become so very cumbersome. Each appliance has its
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