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A resistive load of R = 10Ω is to be connected to a 50Ω source, operating...
1. A step-down chopper is connected to a 90VDC source and a 3Ω resistive load. The...
1. A step-down chopper is connected to a 90VDC source and a 3Ω resistive load. The chopper switching frequency is 5kHz with a 40% duty-cycle (D) Average free-wheeling diode current 2. A step-down chopper is connected to a 90VDC source and a 3Ω resistive load. The chopper switching frequency is 5kHz with a 40% duty-cycle (D) Size of inductance for a 10% peak-to-peak current ripple 3. VS = 90V EMF = 40V R = 2Ω L = 10mH switching frequency = 5kHz...
2. In the circuit shown below, the operating frequency for the transmit antenna is 300 MHz....
2. In the circuit shown below, the operating frequency for the transmit antenna is 300 MHz. At this frequency, we can represent the transmission line and antenna with a resistive load RL. This resistance accounts for radiated electromagnetic wave. The variable capacitor and inductor shown were tuned to achieve an impedance matching condition, i.e. where ZL is the impedance of the transmission line-antenna assembly and Zr is the Thévenin equivalent impedance of the driver circuit, including R., C and L....
4. (30 pts) In a radio frequency circuit, a (175Ω resistor) serves as a load at...
4. (30 pts) In a radio frequency circuit, a (175Ω resistor) serves as a load at the end of a transmission line of (50Ω). We want to use a shorted stub in parallel to achieve maximum power transfer. Use a smith chart. a. (15 pts) Determine the minimum distance in wavelengths from the load that the stub must be connected. b. (15 pts) Determine the minimum length of the stub in wavelengths.
Solve by hand and simulate in any electrical circuit simulator preferrably LTSpice Solve by hand only. Problem #4: Consider the circuit shown below. 6Ω /8 Ω 302 2700 V (rms) 40 2 Source-Line Load...
Solve by hand and simulate in any electrical circuit
simulator preferrably LTSpice
Solve by hand only.
Problem #4: Consider the circuit shown below. 6Ω /8 Ω 302 2700 V (rms) 40 2 Source-Line Load (a) Find the real power dissipated in the line. (b) Find the capacitive reactance that when connected in parallel with the load will pl make the load look purely resistive. (c) What is the equivalent impedance of the load in (b)? (d) Find the real power...
2. In the circuit shown: 8Ω 20 0 0 9 20 A 120 2 50Ω a....
2. In the circuit shown: 8Ω 20 0 0 9 20 A 120 2 50Ω a. Find the Thevenin's equivalent circuit. b. Find the resistance of the load R connected between terminals a and b that absorbs the maximum power. Find the total power absorbed by other resisters in the circuit when the maximum power is being delivered to the load. Calculate the value of resister R that will draw the maximum current from the source Replace the current source...
Assuming that the load impedance is to be purely resistive, what load should be connected to...
Assuming that the load impedance is to be purely resistive, what load should be connected to terminals a-b of the circuits in the given figure so that the maximum power is transferred to the load? Assume R 52 Ω. 100 Ω -j10Ω 40Ω 120/60° v (+ 2/90 A j30 Ω o b The value of R is Ω.
Problem 3ph [10 pts]: Y-connected source: A Y-connected balanced three-phase source is feeding a ...
Please show how this transformers problem is done. Thanks!
Problem 3ph [10 pts]: Y-connected source: A Y-connected balanced three-phase source is feeding a balanced three-phase load (it doesn't matter whether the load is Y or Delta connected). The voltage and current of the source are: van (t) - 340 sin (377t + 0.5236) ia(t) 100sin (377t 0.87266) Calculate the following: (a) The rms phase voltage (Van, magnitude and phase). (b) The rms line-to-line voltage (Vab, magnitude and phase) (c) The...
You have an antenna with an input impedance of Z (140 -j35)2 at f 120 MHz....
You have an antenna with an input impedance of Z (140 -j35)2 at f 120 MHz. You would like to match this load to a 70Ω transmission line using a single stub tuner (vp-2.2x108 m/s). Using the Smith chart, determine the distance d away from the load and the length l of a short-circuited parallel stub to accomplish the matching goal at the design frequency. Estimate the reduction in radiated power if the operating frequency is changed to f 125...
I Review The figure below shows a resistive load R = 7 12 connected to a...
I Review The figure below shows a resistive load R = 7 12 connected to a Thevenin equivalent circuit (Figure 1). Suppose that V = 36 V Part A For what value of Thevenin resistance is the power delivered to the load maximized? (Hint: Be careful; this is a tricky question if you don't stop to think about it.) Express your answer to two significant figures and include the appropriate units. ? .! HA Rs = Value O 2 Units...
Make a sketch below of a balanced Y-connected resistive load, having a resistance of 300 S2 per p...
Please do draw the two circuit and calculate the
theoretical values.
Make a sketch below of a balanced Y-connected resistive load, having a resistance of 300 S2 per phase, connected to the power supply, with an ammeter connected in each line/phase, and a voltmeter across each phase. Knowing that Vi-1 is 208 V, determine the expected current- and volt-meter readins, and record these values in the table below. Please 3. use the actual components in the lab. Table 2 Y-connected...
2. In the circuit shown below, the operating frequency for the transmit antenna is 300 MHz. At this frequency, we can represent the transmission line and antenna with a resistive load RL. This resistance accounts for radiated electromagnetic wave. The variable capacitor and inductor shown were tuned to achieve an impedance matching condition, i.e. where ZL is the impedance of the transmission line-antenna assembly and Zr is the Thévenin equivalent impedance of the driver circuit, including R., C and L....
Solve by hand and simulate in any electrical circuit
simulator preferrably LTSpice
Solve by hand only.
Problem #4: Consider the circuit shown below. 6Ω /8 Ω 302 2700 V (rms) 40 2 Source-Line Load (a) Find the real power dissipated in the line. (b) Find the capacitive reactance that when connected in parallel with the load will pl make the load look purely resistive. (c) What is the equivalent impedance of the load in (b)? (d) Find the real power...
2. In the circuit shown: 8Ω 20 0 0 9 20 A 120 2 50Ω a. Find the Thevenin's equivalent circuit. b. Find the resistance of the load R connected between terminals a and b that absorbs the maximum power. Find the total power absorbed by other resisters in the circuit when the maximum power is being delivered to the load. Calculate the value of resister R that will draw the maximum current from the source Replace the current source...
Assuming that the load impedance is to be purely resistive, what load should be connected to terminals a-b of the circuits in the given figure so that the maximum power is transferred to the load? Assume R 52 Ω. 100 Ω -j10Ω 40Ω 120/60° v (+ 2/90 A j30 Ω o b The value of R is Ω.
Please show how this transformers problem is done. Thanks!
Problem 3ph [10 pts]: Y-connected source: A Y-connected balanced three-phase source is feeding a balanced three-phase load (it doesn't matter whether the load is Y or Delta connected). The voltage and current of the source are: van (t) - 340 sin (377t + 0.5236) ia(t) 100sin (377t 0.87266) Calculate the following: (a) The rms phase voltage (Van, magnitude and phase). (b) The rms line-to-line voltage (Vab, magnitude and phase) (c) The...
You have an antenna with an input impedance of Z (140 -j35)2 at f 120 MHz. You would like to match this load to a 70Ω transmission line using a single stub tuner (vp-2.2x108 m/s). Using the Smith chart, determine the distance d away from the load and the length l of a short-circuited parallel stub to accomplish the matching goal at the design frequency. Estimate the reduction in radiated power if the operating frequency is changed to f 125...
I Review The figure below shows a resistive load R = 7 12 connected to a Thevenin equivalent circuit (Figure 1). Suppose that V = 36 V Part A For what value of Thevenin resistance is the power delivered to the load maximized? (Hint: Be careful; this is a tricky question if you don't stop to think about it.) Express your answer to two significant figures and include the appropriate units. ? .! HA Rs = Value O 2 Units...
Please do draw the two circuit and calculate the
theoretical values.
Make a sketch below of a balanced Y-connected resistive load, having a resistance of 300 S2 per phase, connected to the power supply, with an ammeter connected in each line/phase, and a voltmeter across each phase. Knowing that Vi-1 is 208 V, determine the expected current- and volt-meter readins, and record these values in the table below. Please 3. use the actual components in the lab. Table 2 Y-connected...
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