a) impulse current generator , generation of switching surges , generation of high frequency high voltage
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a) impulse current generator , generation of switching surges , generation of high frequency high voltage
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- 1. Single phase half-wave converter has a purely resistive load of R and delay angle is a= n/2 determine: (a) Rectification efficiency (b) Form factor (c) Ripple factor.A 120 Vp is applied to the primary coil of a center-tap transformer of turn ratio (n1 : n2 = 6: 2) . If the secondary coils are connected to a Ge diodes center-tap full wave rectifier, the output DC voltage is about __________. *1- 13.42 V2- 14.15 V3- 15.58 V4-12.54 V5- 16.23 V. Can you get a DC signal from the Digital Multi-Meter? If not, why?
- A single phase full converter feeds power to RLE load with R=10 ohm, L=10 mH and E=50 V, the ac source voltage is 230 V, 50 Hz. For continuous conduction, what is the average value of load current for firing angle delay of 600 ?18. A dc-dc converter is to be built with the following specifications: Allowed dc input voltage range: +8 V to +18 V +24 V Output average voltage: Output voltage ripple: ±0.06 V maximum at rated load 300 W, resistive ±250 mA maximum at rated load 100 kHz Rated load: Input current ripple: Switching frequency: Common ground between input and output. a. Draw a circuit which can perform this function. b. What is the necessary range of duty ratio for each switch? c. Find circuit part values (R, L, and C) which will meet the stated specifications.1- spark gaps testing method is applicable for testing 2- the electrical circuit that we use to measure high voltages and is not affected by frequency change 3- We can say high voltages if exceed ------------ V (Alternating voltages) 4- Transient voltages which are caused over voltages be in two forms 5- High voltages can be generated for testing in three ways ------
- A single phase full wave AC voltage controller has a resistive load of 5 ohms and an input voltage of Vs = 240 V (RMS), 50 Hz. The delay angles of both thyristors are set to 45 degrees. The maximum RMS and average current ratings of the thyristor are equal to: Select one: O a. 33.94A and 21.6A O b. None of these O c. 24A and 10.8A O d. 48A and 26.09A Clear my choicehow to measure ripple factor and peak input and peak output voltage for this circuits ?ZEV * OMANTEL I. A moodle1.du.edu.om Question 2 Not yet answered Marked out of 2.00 P Flag question A buck converter produces an output voltage of 100 V across a 100 Ohm load resistor. The output voltage ripple is 0.5 %. The output current ripple is 2 A. The dc supply is 200 V. The switching frequency is 1 kHz. The value of the inductor is: Select one: O a. 25.00 milli Henry b. 35.25 micro Henry O c. None of the above d. 88.55 micro Henry O e. 75.15 nano Henry Previous page Next page
- Power electronics questionConsider a 3-phase half-wave rectifier circuit shown in the figure. The source is a symmetrical, 3-phase four wire system. The line- to-line voltage of the source is 150 V and the supply frequency is 300 Hz. The ripple frequency at the output is R ER B N-Derive the average and rms values of output voltages and currents for three phase semi converter. Power Electronics