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Electrical Engineering/Questions
| Subject | Date Asked | Expert |
| heaters | 12/27/2006 | cleggsan |
| Q: I would like to know in just a little detail what the differences are between fan,convector and ... A: Well, last question first: Heat is heat and power is power. Electrical power is in watts. It is ... | ||
| RTD And electrical heater | 12/26/2006 | cleggsan |
| Q: How are the RTDs connected to the winding let say a motor. Is it hook up like the current ... A: Temperature dependent resistors are used in a motor for protection such that when the temperature ... | ||
| Generator as a motor. | 12/25/2006 | cleggsan |
| Q: Generator as a motor. Our generator is connected to 6kV busbar. Normal operation would be the ... A: Most generators have switching circuits that reconfigure the winding connections for motor use. ... | ||
| Voltage Drop Effects | 12/25/2006 | cleggsan |
| Q: Let say according to design I have to install a cable with voltage drop 5V/m. For a distance about ... A: Simple, the voltage drop will be more or less, depending on what gauge wiring you are using. The ... | ||
| Gas Turbine Gen | 12/25/2006 | cleggsan |
| Q: 1.In the protection system of generator, there is under/over frequency relay. How does this relay ... A: I think my previous question answered this. The automatic controls are very sophisticated ... | ||
| Gas Turbine Generator | 12/24/2006 | Dave Nyce |
| Q: 1.In the protection system of generator, there is under/over frequency relay. How does this relay ... A: 1. There are several ways. One way is to use a counter that counts the frequency signal for a fixed ... | ||
| Gas Turbine Generator | 12/24/2006 | cleggsan |
| Q: 1.In the protection system of generator, there is under/over frequency relay. How does this relay ... A: The relay is to cut out if the frequency shifts too far away from the line it is connected to. The ... | ||
| ICCP System and Sacrificial Anode | 12/24/2006 | cleggsan |
| Q: 1.In our plant we use ICCP system. L:et say I install 10 sacrificial anodes at 10 points. So one ... A: I am still not too sure which system you are talking about, but most corrosion and connection/bus ... | ||
| Impressed Current Cathodic Protection And Sacrificial Anode | 12/24/2006 | cleggsan |
| Q: In our plant we use ICCP system.We placed several sacrificial anodes (10) at several points(10).Let ... A: Sorry, I must know which system you are talking about. This kind of system: ... | ||
| differential signal | 12/23/2006 | Dave Nyce |
| Q: I see in some documents people say that we can transmit differential signal.But I do not understand ... A: A typical single ended signal could be with two wires, where one has a voltage of either 0V or 5V, ... | ||
| wireway calculations | 12/21/2006 | cleggsan |
| Q: It might seems like I am gonna ask to do my homework but it is not.Currently I am studying NEC ... A: Sorry, I can't help on this one. I don't have the National Electric Code requirements handy and I am ... | ||
| PWM concept and inverter | 12/20/2006 | cleggsan |
| Q: I was told the output of PWM is a sequence of squarewave.This squarewave actually come from the AC ... A: http://www.cpemma.co.uk/pwm.html The above is a good tutorial on how PWM works. ... | ||
| PWM concept and inverter | 12/19/2006 | cleggsan |
| Q: Most inverter use PWM concept.TYhe output of itis a square wave, but how can it(squarewave) relates ... A: PWM or pulse width modulation is a means whereby the amount of energy is controlled by the width of ... | ||
| UPS Inverter Failure | 12/19/2006 | cleggsan |
| Q: I do not really understand the answer for nomber 1.Could you clarify?...from loading the ... A: A short circuit is an overload. The most sever overload since the load impedance is "zero". Any ... | ||
| AC/DC Relay Circuit | 12/18/2006 | cleggsan |
| Q: You may or may not want to answer this question, but let me give you a little background first. My ... A: Relays with external contacts for switching will hand the ac just fine. All you need is a very ... | ||
| overheating transformers | 12/18/2006 | cleggsan |
| Q: I have a customer with a strange problem. In a high-rise hotel he has a 480v buss riser. On every ... A: Well, you may have confused the readings OR the lines are mismarked and the A phase and C phase are ... | ||
| Shorted Battery | 12/18/2006 | cleggsan |
| Q: We know the negative plate and positive plate in a battery separated by separator.So how can these ... A: First let me refer you to this site for a quick review of battery operation: ... | ||
| UPS Inverter Failure | 12/18/2006 | cleggsan |
| Q: Questions regarding UPS 1.There are many causes can make the inverter in UPS to fail.Among them are ... A: http://www.ybet.be/en-hardware-2-12/ups.htm The above may help with an overview of ups ... | ||
| Liquid conductivity | 12/17/2006 | cleggsan |
| Q: I have a unique problem that I am at a loss to resolve. I have a couple of ideas but am unsure if ... A: So, you want to know the routing of the vinyl tubes so that you can cut into the floor and avoid ... | ||
| UPS | 12/17/2006 | cleggsan |
| Q: most of gutor and UPS use thyristor,scr.but i do not understand the operation of thyristor ... A: Oh, here is the deal on a thyristor: http://en.wikipedia.org/wiki/Thyristor Thyristors, scrs and ... | ||
| Meggering | 12/17/2006 | cleggsan |
| Q: Just now I meggered a compressor winding for 15 HP AC.Two compressores actually.For compressor 1, ... A: that helps. I suggest you, also, using a plain and simple vom, check for shorts to the case, shorts ... | ||
| DC generator output at variable RPM | 12/16/2006 | cleggsan |
| Q: I have a self-made wind turbine (daughter's project) with a 12VDC 10amp motor/generator attached to ... A: Resistive load would be in ohms. Is the load a 10 ohm resistor? (E = I*R, or R = E/I = 3v/.3a = 10 ... | ||
| Meggering | 12/16/2006 | cleggsan |
| Q: Just now I meggered a compressor winding for 15 HP AC.Two compressores actually.For compressor 1, ... A: I am confused. Meggering is usually for testing insulation qualities from windings to case or ... | ||
| UPS | 12/16/2006 | cleggsan |
| Q: 1.Most of the UPS use this thirystor bridge rectifier that hac something we call firing pulse.What ... A: You did not send me the make and model you are talking about. Not all ups circuits are the same. ... | ||
| UPS | 12/15/2006 | cleggsan |
| Q: For UPS normally we are using Lead acid/Nicad or VRLA battery.Could you exolain the VRLA? And what ... A: Valve Regulated Lead Acid batteries are designed for rugged, compact use. They use tougher ... | ||
| Experiment to find Inductance of inductor | 12/14/2006 | cleggsan |
| Q: This is one of a series of experiments for a project, this one is to calculate the inductance of an ... A: Yes, that is true only if the R is equal to the inductive reactance. It may be a better choice to ... | ||
| Stymied on how to calculate this | 12/13/2006 | cleggsan |
| Q: I wanted to know if you take an acyclic generator homopolar generator (faraday disk high current low ... A: Let me repeat: If the generators are connected in a series circuit the current must be the same in ... | ||
| Samsung TV Convergence problems | 12/13/2006 | cleggsan |
| Q: Now the TV will not turn on, therefore no audio or video. I can hear it attempt to start up and then ... A: As you know, diagnosing long distance without seeing the symptoms is, at best, a guessing game to ... | ||
| Stymied on how to calculate this | 12/13/2006 | cleggsan |
| Q: I wanted to know if you take an acyclic generator homopolar generator (faraday disk high current low ... A: Nice discussion on the Faraday disc generator at: http://en.wikipedia.org/wiki/Homopolar_generator ... | ||
| Samsung TV Convergence problems | 12/12/2006 | cleggsan |
| Q: Suddenly the screen on my Samsung HCN4226W arched at the top and colors red, blue and green became ... A: Yes, I would say it is a failure of the STK ICs in the convergence circuitry. They must be replaced ... | ||
| UPS | 12/11/2006 | cleggsan |
| Q: 1.How can a capacitor boost the starting for motor.From what I know the capacitor functions are to ... A: Yes, that is true, but there is lead and lag in the capacitor as it takes time to store the energy ... | ||
| UPS | 12/11/2006 | cleggsan |
| Q: 1.Why cant we connect UPS neutral with the main neutral bar? 2.How do we check at the UPS the ... A: 1. You can if you want to. However, then it is tied to the supply lines through the ground and ... | ||
| d.c motor,generator and a.c motor, generator | 12/11/2006 | cleggsan |
| Q: uses of dc, a.c generator and motor in industries applications and formulaes A: Do you have a question? Motors and generators come in many, many sizes, shapes and designs. They ... | ||
| Meggering | 12/10/2006 | Dave Nyce |
| Q: 1.What is the concept behind meggering a cable and the voltage we inject?Why we inject? 2.Let say ... A: I would not call it "injecting" a voltage. I would call it "applying" a voltage. With two ... | ||
| Generator Exciter and Diode | 12/10/2006 | cleggsan |
| Q: 1.What are the fucntions of the exciter in gas turbine generator? 2.What are the fucntions of the ... A: Exciter controls the magnetic field in the generator system and controls the output voltage and/or ... | ||
| Electric motors | 12/8/2006 | cleggsan |
| Q: I am not sure the questions that I have need to be directed to a person with your back round or if ... A: Yes, this is out of my direct area; but an interesting question. It is one that I would delve into ... | ||
| automotive electrical system | 12/8/2006 | Dave Nyce |
| Q: computers are able to receive and process both analog and digital signals. True or False?The EEPROM ... A: The actual "computing" part of any modern "computer" only works with digital data. When analog ... | ||
| question | 12/8/2006 | cleggsan |
| Q: what is exciter and its uses? A: There are many exciters - a term used in computers, radio, power, microwave, etc. For example, in ... | ||
| electricity | 12/7/2006 | cleggsan |
| Q: what is the difference between electronic current and conventional current? how these two currents ... A: No difference; maybe just different terminology being used. Current is current; it only comes in ... | ||
| electricity | 12/6/2006 | cleggsan |
| Q: what will happen if we provide dc to a bulb instead of ac? A: If it is an incandescent lamp and you apply the same voltage it will make no difference. If it is a ... | ||
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Electrical Engineering
Answers by Expert:
cleggsan
Top Expert on this page
Expertise
All technical areas of Electronics Engineering.
Experience
BSEE, MBA, Design, R&D, University Research.
Senior Life Member of IEEE. Life Fellow of AES.
Organizations
IEEE, Consumer Electronics Society, Audio Engineering Society.
Broad teaching experience; work experience mostly in consumer electronics and conversion from analog to digital technologies. Pioneer in digital audio at all levels.
Education/Credentials
BSEE (Equiv) BYU
BSEE University of North Dakota
MSBA (MBA) Illinois State University
Graduate Studies in Computer Science - Bradley University
Graduate Studies - Ohio University
Graduate Studies - University of Missouri Kansas City
DeVry Tech - Electronics
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