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- a) Figure 3 illustrates a thyristor phase control circuit and associated waveforms. Describe the function of the control element in the circuit towards the output at the load. Identify the best-suited application to describe the control circuit. Lamp Load VAC SCR r 9 8₁ Conduction MM h 18₂ h Gate Trigger PulseWhen the triac is in the OFF state: Output module terminal strip Triac switch LED output L1 status indicator Fuse Optical isolator, Field wiring Digital logic circuit Load L2 Internal module circuit Simplified diagram for a single output of a discrete AC output module. O the rated nominal current flows through the lamp O the rated surge current flows through the lamp O zero current always flows through the load small leakage current may flow through the load aPlease, in 10 minutes. Will be very THANKFUL. A single-phase half-wave thyristor control is desired to be designed in such a way that a rectifier can provide an average load current of “1.6” Ampere to an ohmic load. “240”Volts, an output voltage of “83”Volts is formed for 50Hz mains supply voltage. According to these given values: a-) Draw a single line diagram of the circuit to be designed? b-) Calculate the trigger angle α? c-) calculate the rms voltage on the load? d-) Calculate the rms current on the load? e-) Calculate the output dc power?
- Which one of the following statement is correct ? a. Controlled rectifier circuit requires small filters b. Efficiency is better in controlled rectifier circuit c. Switching frequency is not responsible for output ripples in chopper d. Controlled rectifier regenerative braking process is very slow Clear my choiceWhat is the ignition angle at which a three-phase half-wave controlled rectifier operates?A step up chopper has an input of 200 volts and output of 250 volts. The blocking period is each cycle is 0.6x10-3 seconds. Find the period of conduction in each cycle and frequency of operation?
- 1. For the ADC0804 used in section 1. the step size can be adjusted by setting the reference voltage on pin 9. When this pin is not connected (as shown in the figure 1 schematic), the reference voltage is the operating voltage Vcc. a) What is the step size for this default setting? b) How can we set the reference voltage on pin 9. to 4 V? c) What would be the step size after changing the reference voltage to 4 V? 2. Determine the analog input that will result in an output code of "10001110". Assume 5 V reference. Show your calculations. 3. What value of the analog input voltage would result in a digital output is 6F (hex)? Assume 4V reference. Show calculations. 4. In section, you used a 8-bit D/A converter. With a reference voltage of 5 V, what voltage does each bit represent in terms of the analog output? Show calculations. 5. For the D/A converter, if the output is 3.62 V, what is the value of the digital input? Show calculations. 6. For the D/A converter circuit shown in Figure 2,…4aa) This question is about half wave rectifier Half wave rectifier with a reservoir capacitor -> connected -> AC mains supply (220Vrms, 50Hz) by 20:1 transformer. What is the value of capacitor for the ripple voltage of 12% of the peak input voltage? The load's maximum current is 170mA. Show the full working!15. What is the relationship of the gate pulses to the two thyristors in a full-wave ac phase control circuit? 16. A buck chopper is powered by a 200-V dc power supply. What is the output voltage range of this chopper if the duty cycle can be varied between 30 and 95%?
- (a) State the types of turbine flow meters and point out the difference between them. (b) What is the advantage and disadvantage of orifice plate flow meter ? (c) State the types of temperature measurement transducers , explain in details the operation and construction of the thermistor (d) Explain in details the bourdon tube pressure sensor and how it operates.Choose the converter which is used for converting Fixed bi-directional voltage to Variable alternating voltage? O a. Bidirectional voltage converter O b. DC voltage controllers O c. Bidirectional current converter O d. AC voltage controllersAbout sources, check the correct statement(s). a) A power supply is composed of at least six parts, they are: AC power, transformer, rectifier, filtering capacitor, voltage regulator and load.b) The transformer must be a voltage step-down.c) We have the options of half wave rectifier circuit, full wave rectifier circuit and bridge full wave rectifier circuitd) Regardless of the rectifier circuit used, we need to insert a filtering capacitore) The filtering capacitor must be placed in series with the loadf) We usually use an electrolytic capacitor as a filtering capacitor in power supplies.g) These are characteristics of the filtering capacitor: it opposes variations in electrical voltage, the ability to store charges depends on its capacitance.h) The filter capacitor needs a current limiting resistor connected in seriesi) Among the techniques used as a voltage regulator we have: The zener diode, LM317, LM78XX and LM 79XX.j) If we are going to build a symmetric source, we will have to…