2. A single-phase bridge rectifier has an RL load with R= 15 Q and L = 30 mH. The ac source is 120 V rms, 60 Hz. Determine the following a) the average load current b) the power absorbed by the load c) the power factor
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- What is CEMF?A group of UTAS-Nizwa students are working on a project entitled "Gas leak detector alarm" for their final year in Diploma level. The circuit works on DC voltage of 16 volts and DC current of 7 milliampere. Students need to design a power supply circuit for their project. Consider an RMS voltage input of 220 volt, 60 Hz. Using a Full Wave Bridge Rectifier with Transformer, Silicon diode and Capacitor Filter, Design the power supply. a. Compute for the load resistance, peak output voltage, input peak voltage to the diodes (secondary voltage), peak input voltage and the turns ratio of the transformer. 1. What is the value of the load resistance? b. Draw the Power Supply circuit (capacitor filter connected in parallel with the resistor) and write the computed values (No value for the capacitor).A pure resistive R ohm resistor to the output of the three phase Bridge Rectifier connected and provides 250 DC output voltage, 50A load current, welding frequency 50 Hertz. a-Efficiency=? b-FF Coefficient c-RF Coefficient
- Find the performance parameters (FF, RF and n) for the Single phase bridge uncontrolled rectifier with RL load. If the phase voltage: Vph(t) = Vm sin(wt). Draw the circuit diagram and sketch the voltages and current waveforms.Calculate the average value of the output DC voltage for 20 trigger angles (a = 20) for a three-phase full-wave controlled rectifier operating in a network with phase neutral voltage of 150V.A three-phase bridge rectifier uses diodes rated at IdRMS = 145, VRRM =1000V and VD=0.7V. The rectifier isfed from a transformer with an inductance of 0,5mH per phase. Assume infinite inductive filtering and calculate, 1. the maximum DC output current;2. the maximum DC output voltage;3. the overlap angle.
- Q ) For the full- wave uncontrolled rectifier circuit supplying a series resistive Thesupply voltage is v =300 sinωt , the supply frequency is 50 Hz and the loadparameter values are: R =05 Ω,a) Sketch the diagram of electrical circuitb) Sketch the load voltage and current waveforms .c) Calculate the load currentd) Calculate the average DC load voltage Vdc .e) Calculate the supply power to the loaThree-phase half wave rectifier supply resistive load with DC power of 4 kW; the ammeter connected with D1 indicates 8 A r.m.s current, and the source frequency is 50 Hz Due to system inductance the average voltage drops to 96.2% of idealized value ( when the inductance is neglected). How much will the average and r.m.s voltage s be? The r.m.s phase current and average load current Is=? & Idc=? The secondary r.m.s voltage and transformer capacity Vs & KVA? The inductances causes the voltage drop Lc=? The diode forward current and maximum inverse voltage? Now, if the phase B is failed ( disconnected), how much with new dc voltage be in %..Vdc=….% ??A single-phase center-tapped transformer rectifier has an ac source of 240 V rms and 60 Hz. The overall transformer turns ratio is 3:1 (80 V between the extreme ends of the secondary and 40 V on each tap). The load is a resistance of 462 Ω. Determine (a) the average load current, (b) the rms load current, (c) the average source current, and (d) the rms source current. Sketch the current waveforms of the load and the source
- Exe 1. A half-wave rectifier has a source of 120 V rms at 60 Hz and an R-L load with R=10 Ω and L= 10 mH.Determine, an expression for the load current, the average current, the power absorbed by the resistor, and the power factor. Hint: Beta=3.5 RadDesign a Single-phase bridge rectifier that is required to energize a load with (X) Watts and with max IDC≤ 2A with voltage ripples must not exceed 5%. - Determine the system parameters and select the appropriate transformer, didoes and filter -Plot the waveforms.Design rectifier circuits to provide an output of100 VDC using a.) HWR b.) Center-tappedFWR and c.) Bridge-Type FWR circuits. For each circuit, calculate the transformer peakvoltage rating, the diode PIV ratings, and thetransformer turns ratio, if power is taken fromthe 220V line ac supply