Technology 12/10/2012 2012 Sidra Inam University of Engineering & Technology 12/10/2012 Why Starting Current of Induction Motor Is Higher Than the Synchronous Motor Why Starting Current of Induction Motor Is Higher Than the Synchronous Motor Starting Current Of Induction And Synchronous Motors:- Starting Current of both motors were different‚ when analyzed using ETAP. Starting current of Induction motor was more than that of the synchronous motor. However Induction motor is used for Stable
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A.C current meters Introduction An ammeter is a measuring instrument used to measure the electric current in a circuit. Electric currents are measured in amperes (A)‚ hence the name. Neither type of basic dc PMMC meter movement will correctly indicate an alternating current. There are‚ however‚ four basic types of meter movement that will indicate ac values:- Thermocouple Hot wire Electrodynamometer Iron-vane Electrodynamic ammeters An electrodynamic meter uses an electromagnet instead
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constant voltage. Represents a battery in an equipment package. | resister | | | A resistor restricts the flow of current‚ for example to limit the current passing through an LED. A resistor is used with a capacitor in a timing circuit. | attenuator | | | A box with input and control logic on one side‚ and output on the other. | capacitor | | | A capacitor stores electric charge. A capacitor is used with a resistor in a timing circuit. It can also be used as a filter‚ to block DC signals
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Rectifiers Without Current Sensors Bingsen Wang‚ Member‚ IEEE‚ Giri Venkataramanan‚ Member‚ IEEE‚ and Ashish Bendre‚ Member‚ IEEE Abstract—Three-level rectifiers with reduced number of switches (such as the Vienna Rectifier) to improve the input power quality of rectifier systems have been receiving wide interest in the past years. In this paper‚ a new carrier-based pulsewidthmodulation control algorithm is proposed for such converters to eliminate the low-frequency harmonics in the line current while achieving
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Budget Deficits and Current Account Disequilibrium in Nigeria: An Econometric Investigation (1970-2010) BY Iyeli I. Iyeli‚ (Ph.D)‚ Clement Utting and Jacob O. Owan Department Of Economics University Of Calabar Calabar‚ Nigeria e-mail:reiyeli@yahoo.com; Tel: +2348036558316 Abstract This study on budget deficits and current account disequilibrium in Nigeria seeks to investigate the effects of budget deficits on current account within the time frame of 1970-2010. Data on this
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How voltmeter and ammeter work Measuring Voltage Measuring the voltage between two points of an electrical current can be done with an instrument called a voltmeter. One type of voltmeter is a direct-current voltmeter. When taking a voltage reading the instrument is placed across the portion of the circuit that is to be measured. Direct-Current Voltmeter The direct-current voltmeter has a horseshoe shaped magnet‚ with a semicircular piece of soft iron attached to each end of the magnet. The iron
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Electrical circuit is a path which electrons from a voltage or current source flow. Electric current flows in a closed path called an electric circuit. The point where those electrons enter an electrical circuit is called the "source" of electrons. The point where the electrons leave an electrical circuit is called the "return" or "earth ground". The exit point is called the "return" because electrons always end up at the source when they complete the path of an electrical circuit. The part of an
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nature of the material. In a gas discharge‚ such as a fluorescent lamp‚ current causes resistance to decrease. This is because as more electrons and ions flow through a particular area‚ they bump into more atoms‚ which frees up electrons‚ creating more charged particles. In this way‚ current will climb on its own in a gas discharge‚ as long as there is adequate voltage (and household AC current has a lot of voltage). If the current in a fluorescent light isn’t controlled‚ it can blow out the various
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Novel Analytical model for current-voltage characteristics and transconductance of undoped AlGaN/GaN MISHFET’s and performance comparison with different high-k dielectrics Rangababu Ganta1‚ Saptarsi Ghosh2 and Dhrubes Biswas1‚2 1Department of Electrical & Electronics Communication Engineering‚ IIT Kharagpur‚ Kharagpur -721302‚ India 2Advance Technology Development Center‚ IIT Kharagpur‚ Kharagpur -721302‚ India E-mail: rangababu.ganta@gmail.com Abstract. In this paper an improved charge
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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 when no electric current is passed through the test object‚ but a magnetic field is applied from an outside source. The magnetic lines of force are perpendicular to the direction of the electric current which may be either alternating current (AC) or some form of direct current (DC) (rectified AC). Magnetic particle inspection
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