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- For 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.In the circuit of figure Nº A, the secondary voltage Vs is 15 volts rms with a frequency of 60 Hz, R equal to 100 Ohms and C equal to 1000 microfarads. The diodes are silicon (Vd = 0.7 volts) and the Zener diode is 15 volts. Determine:a) The magnitude of the ripple voltage at Cb) The Magnitude of the Peak Inverse Voltage (PIV) for D1 and D2Given the circuit in Figure 04 and defining that: Vs = 100 sin (wt) Volts and the firing angle of the thyristors T1 and T2 is equal to 110° and that T3 and T4 have similar firings in the negative half-cycle of Vs. a)Sketch the output voltage waveform for a highly inductive load. b) Sketch the waveform output voltage, replacing the highly inductive load with a purely resistive load. c) Get the value of the average output voltage when the load is purely resistive.
- In the circuit of the following figure, the input voltage Vs is 15 volts rms with a frequency of 60 Hz, R equals 150 Ohms and C equals 100,000 Pico Farads. The diodes are Germanium (Vd = 0.2 volts) and the Zener diode is 12 volts. a) The magnitude of the ripple voltage at Cb) The Magnitude of the Peak Inverse Voltage (PIV) for D1 and D2.Questions A i) Explainandexaminetheeffectofnegativeandpositivefeedbackonamplifiers. ii) Design and analyze waveform generators..A single phase bridge rectifier supplied from a 120V - 50 Hz sinusoidal source is connected to an inductive load. The general expression of the RMS AC component of the current is given below where Vm is the maximum input voltage. If R = 1k2, then the value of the inductance that would limit the AC component IAc to less than 5% of the DC component Ipc would be equal to: 4Vm IAC V2. 1. R2 + (2wL)? Select one: O a. 4.92H Ob. 11.92H O c. 8.92H O d. 14.92H TOSHIBA 24
- Q1)Design moving coil ammeter as a voltmeter to read 15 V (RMS) alternating voltage. If the internal resistance of the ammeter is 5 K2, the voltage across the internal resistance is 0.5 v and the resistance of the diodes in the forward direction is 1 K2, find the multiplier resistance and sensitivity. Assume half wave rectification and a shunt resistance across the meter. The value of the shunt resistance across the ammeter is 2.5 KQ. Q2) Re-design the question above for full wave rectifier (without Rsh)Q1. following: For the circuit shown in figure (a). Let V1 = 10Vms, frequency 10KHZ. Draw the A. Impedance diagram. B. Voltages phasor diagram. C. Current phasor diagram. D. Measure the voltage across R1,R2, Vin, and the inductor using the ocillscope using PROTEUS software. E. Measure the voltage in R1, R2, and the inductor using DMMby using PROTEUS software. F. From the above measurments verify your result. R2 1K V1 VSINE R1 L1 2K 1000MA single phase bridge rectifier supplied from a 120V - 50 Hz sinusoidal source is connected to an inductive load. The general expression of the RMS AC component of the current is given below where Vm is the maximum input voltage. If R = 1ko, then the value of the inductance that would limit the AC component lac to less than 5% of the DC component Ipc Would be equal to: 4Vm V2.1. R2 + (2wL)² Select one: O a. 14.92H b. 4.92H O C. 8.92H d. 11.92H
- Q2) A 3-phase, half-wave thyristor converter is connected through a voltage source 150 V as input voltage and used to supply resistive load of 10 2. Determine rsm voltage, rms current, ripple factor and dissipated power in the resistor R. If a = 45° and f = 50 Hz. %3DA Capacitor filter is used at the output across the load in order to minimize the ripple factor of the output voltage. The expressions of the average output voltage Vpc and the output AC component VAc are given below. If R = 1k2 and the single phase bridge rectifier supplied from a 120V - 50 Hz sinusoidal source, then the capacitor value that will maintain the amount of the output ripples to less than 4% would be equal to: VDC = Vm(4FRC – 1)/4ƒRC) VAC = Vm/(4/2ƒRC) Select one: O a. 63.39uF O b. 33.2uF O c. 93.39UF O d. 126.2uF TOSHIBAQ1)Design moving coil ammeter as a voltmeter to read 15 V (RMS) alternating voltage. If the internal resistance of the ammeter is 5 KQ , the voltage across the internal resistance is 0.5 v and the resistance of the diodes in the forward direction is 1 KQ, find the multiplier resistance and sensitivity . Assume half wave rectification and a shunt resistance across the meter. The value of the shunt resistance across the ammeter is 2.5 KQ. Q2) Re-design the question above for full wave rectifier (without Rsh)