Induction motor control
... Electrical power converted into mechanical power (developed power in the rotor). Pm = Total air gap power transferred across the air gap for a three phase induction motor (Pag) – copper loss in the rotor (Pcur) ...
... Electrical power converted into mechanical power (developed power in the rotor). Pm = Total air gap power transferred across the air gap for a three phase induction motor (Pag) – copper loss in the rotor (Pcur) ...
RC Time Constant Lab
... The purpose of this lab is to verify that a series RC circuit does in fact decay exponentially. To do this, we measure a resistance and capacitance (out of circuit), and then we measure the voltage on the capacitor as a function of time when it is decaying in series through the resistor. Is R times ...
... The purpose of this lab is to verify that a series RC circuit does in fact decay exponentially. To do this, we measure a resistance and capacitance (out of circuit), and then we measure the voltage on the capacitor as a function of time when it is decaying in series through the resistor. Is R times ...
Synchronous Condenser brochure
... significant in gusty winds or on partly cloudy days, when wind and solar power fluctuations can be rapid and large. In high renewable penetration microgrids, which typically are designed to support diesel-off operation in islanded mode (such that the renewable generation resources carry 100% of the ...
... significant in gusty winds or on partly cloudy days, when wind and solar power fluctuations can be rapid and large. In high renewable penetration microgrids, which typically are designed to support diesel-off operation in islanded mode (such that the renewable generation resources carry 100% of the ...
Small Engine Ignition Theory - Georgia Ag-Ed Portal
... sizable DC current to flow. The secondary coil has a much larger number of turns and therefore acts as a step-up transformer. But instead of operating on AC voltages, this coil is designed to produce a large voltage spike when the current in the primary coil is interrupted. Since the induced seconda ...
... sizable DC current to flow. The secondary coil has a much larger number of turns and therefore acts as a step-up transformer. But instead of operating on AC voltages, this coil is designed to produce a large voltage spike when the current in the primary coil is interrupted. Since the induced seconda ...
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
... expenses associated with such use: 2 Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. Information (inclu ...
... expenses associated with such use: 2 Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. Information (inclu ...
Trigger Transformers and Chokes
... The inductance of the secondary winding (of the trigger transformer) is part of the discharge circuit and may be ...
... The inductance of the secondary winding (of the trigger transformer) is part of the discharge circuit and may be ...
Section 13.3: Alternating Current
... A GFCI is similar to a circuit breaker. A GFCI is more sensitive to very small changes in current and opens the circuit much more quickly than a circuit breaker. An AFCI is similar to a GFCI. It acts quickly to shut off a circuit when an arc along the circuit is detected. 7. The difference between t ...
... A GFCI is similar to a circuit breaker. A GFCI is more sensitive to very small changes in current and opens the circuit much more quickly than a circuit breaker. An AFCI is similar to a GFCI. It acts quickly to shut off a circuit when an arc along the circuit is detected. 7. The difference between t ...
01 Rectifiers
... you were to measure the voltage over the resistor with an oscilloscope the wave would look like the diagram below. ...
... you were to measure the voltage over the resistor with an oscilloscope the wave would look like the diagram below. ...
ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENT
... 2. A vertical magnetic poles falls down through the plane of the magnetic meridian.Will any e.m.f be produced between its ends? Give reason for your answer. 3. Power factor of an ac circuit is 0.5. What will be the phase difference between voltage and current in the circuit? 4. Which device will you ...
... 2. A vertical magnetic poles falls down through the plane of the magnetic meridian.Will any e.m.f be produced between its ends? Give reason for your answer. 3. Power factor of an ac circuit is 0.5. What will be the phase difference between voltage and current in the circuit? 4. Which device will you ...
Dec
... and unity power-factor, and has an efficiency of 98.20 per cent at half-full load and unity power-factor, maximum efficiency occurring in the neighbourhood of full load. Determine the efficiency, and the core loss and copper loss separately at full kVA load and a power-factor of 0-8. 4. An inductive ...
... and unity power-factor, and has an efficiency of 98.20 per cent at half-full load and unity power-factor, maximum efficiency occurring in the neighbourhood of full load. Determine the efficiency, and the core loss and copper loss separately at full kVA load and a power-factor of 0-8. 4. An inductive ...
chris - Ece.umd.edu
... The T5705 and BBA-519 are both simple to implement. Minimal external circuitry is needed. Frequency of the transmitter is selected with a 14.2969 MHz Crystal for operation at 916 MHz. The circuit will provide a DC voltage through a jumper to the FSK/ASK enable to determine the output mode. A test in ...
... The T5705 and BBA-519 are both simple to implement. Minimal external circuitry is needed. Frequency of the transmitter is selected with a 14.2969 MHz Crystal for operation at 916 MHz. The circuit will provide a DC voltage through a jumper to the FSK/ASK enable to determine the output mode. A test in ...
Exams98
... Owing to a manufacturing fault, the polythene sample has a disc shaped void parallel to the electrodes as shown in Fig 1. Derive a expression which will allow you to calculate the r.m.s voltage which must be applied between the electrodes for discharge inception to occur in the void when t = 0.1 mm. ...
... Owing to a manufacturing fault, the polythene sample has a disc shaped void parallel to the electrodes as shown in Fig 1. Derive a expression which will allow you to calculate the r.m.s voltage which must be applied between the electrodes for discharge inception to occur in the void when t = 0.1 mm. ...
Upper Contact Voltage
... the lower contact gap is correct but the voltage reading is still outside the 0.2–0.7 volt increase, continue this procedure to adjust the lower contacts air gap. ...
... the lower contact gap is correct but the voltage reading is still outside the 0.2–0.7 volt increase, continue this procedure to adjust the lower contacts air gap. ...
1 a power supply
... Ok, so we have your attention. These hints will help you to make this project successful. Read them carefully. 1.1 Make sure you have the right tools: A good quality soldering iron (25-40W) with a small tip. Wipe it often on a wet sponge or cloth, to keep it clean; then apply solder to the tip ...
... Ok, so we have your attention. These hints will help you to make this project successful. Read them carefully. 1.1 Make sure you have the right tools: A good quality soldering iron (25-40W) with a small tip. Wipe it often on a wet sponge or cloth, to keep it clean; then apply solder to the tip ...
Switch gear and Protection 10EE62 Reliability Tests The newly
... The breaking capacity is also equally shared. The results obtained on one unit can be extended further for total capacity of breaker. This is known as unit testing or element testing. It is internationally accepted method. During the application of unit test, the voltage must be reduced by a factor ...
... The breaking capacity is also equally shared. The results obtained on one unit can be extended further for total capacity of breaker. This is known as unit testing or element testing. It is internationally accepted method. During the application of unit test, the voltage must be reduced by a factor ...
Spark-gap transmitter
A spark-gap transmitter is a device that generates radio frequency electromagnetic waves using a spark gap.Spark gap transmitters were the first devices to demonstrate practical radio transmission, and were the standard technology for the first three decades of radio (1887–1916). Later, more efficient transmitters were developed based on rotary machines like the high-speed Alexanderson alternators and the static Poulsen Arc generators.Most operators, however, still preferred spark transmitters because of their uncomplicated design and because the carrier stopped when the telegraph key was released, which let the operator ""listen through"" for a reply. With other types of transmitter, the carrier could not be controlled so easily, and they required elaborate measures to modulate the carrier and to prevent transmitter leakage from de-sensitizing the receiver. After WWI, greatly improved transmitters based on vacuum tubes became available, which overcame these problems, and by the late 1920s the only spark transmitters still in regular operation were ""legacy"" installations on naval vessels. Even when vacuum tube based transmitters had been installed, many vessels retained their crude but reliable spark transmitters as an emergency backup. However, by 1940, the technology was no longer used for communication. Use of the spark-gap transmitter led to many radio operators being nicknamed ""Sparks"" long after they ceased using spark transmitters. Even today, the German verb funken, literally, ""to spark,"" also means ""to send a radio message or signal.""