i- Draw the V-I characteristic curve of a Thyristor/SCR device. ii- Describe this V-I characteristic curve of a Thyristor/SCR device in your own words.
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- Q5. For the following center tapped transformer, show the waveform across each half of the secondary winding and across Ri, when a 100 V peak sine wave is applied to the primarywinding. What is the PIV rating must the diode have? (Use constant voltage drop model for the Silicon diode) IN4001 Ry OV 10k) D IN4001Which of the following statements about bridge tip rectifiers is false? A) If the 1-phase type has source inductance, the average value of the output voltage is lower than in the absence of the inductance. B) The average output voltage value of the 1-phase type is 0.9 times the peak voltage of the network. C) none D) There are only odd harmonics in the current drawn by the 1-phase type from the mains. E) The average value of the output voltage of the 3-phase type is larger as the 3-phase and 1-phase types are compared92) For three- phase half-wave Controlled rectifier Shown in the figure: I- Derive. a formula for mean load Voltage. 2- Draw the wave forms of vo, Li,i, o and voltage across thyristor1 (r.) assuming highly inductive loud and d = 120 Vo
- 92) For three - phase half-wave Controlleed rectifier Shown in he figure: 1. Derive a fomu la for mean load Voltage. 2. praw the wave form of vo, i,,i, iy and voltage across thyristor 1 (r.) assuming highly inductive load and d = 120For the circuit in the figurea) Determine the time constant.b) Write the mathematical expression for IL, VL and VR, after the switch is closed.c) Determine IL, VL for one, three and five time constants.d) Draw the waveforms of IL, VL and VR.iii. For fully controlled single phase bridge rectifier with inductive load (load current is continuous) ,supply voltage 220 V(RMS) and a=30° .The mean value of output voltage is : (a) 150.32V (b) 171.52V (c) 120.98V
- a) Draw the 3-phase half-wave uncontrolled rectifier circuit for resistive load.b) Briefly explain the purpose of use.c) Draw the sinusoidal input voltages and the output voltage on the load.In the given Full Wave Center tapped Rectifier circuit, a step down transformer gives an RMS voltage as 110V/11-0-11 V is used with R₁ = 1 KQ. Assume diode as Germanium. D₁ a) Find Input Voltage Vin b) Find Peak Output Voltage. c) Find Average Output Voltage. d) Find Current through the load resistor. •ooooo 00000 CT 20-S D₂ R₁A single-phase half wave uncontrolled rectifier circuit is operating with a purely inductive load and a source voltage of 100 sin (277t) V. An ideal PMMC ammeter is connected in series with the inductive load reads 20 A. Calculate the distortion factor of the rectifier. Answer Choices: a. 0.866 b. 0.707 c. 0.577 d. 0.816
- I have one (1) AC source, four (4) diodes, and one (1) thyristor. In this case, I would like to obtain a full- controlled rectifier using these components; please describe the circuit?Part A- Why negative peaks are eliminated in Half Wave Rectification and how this can be achieved in Full Wave Rectification without eliminating these peaks? Part B- Is Bridge Full Wave Rectifier only working with Transformers or can we use it with AC source as well? If you are agree with this then provide any advantage of this rectifier circuit without using the transformers OR if you are disagree then provide justification of your answer.(b) Discuss the impact of connecting a large capacitor filter across the load in Figure Q1(ii). Use appropriate waveform sketch to aid your discussion. + Vp - Us R2 RL Vs ( (i) (ii) Figure Q1. Single phase half bridge rectifier: (i) with a Thyristor (ii) with a Diode