Determine the voltages Va and Vb for the networks below.
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Anonymous200
Determine the voltages Va and Vb for the networks below
Using the voltage divider rule or Kirchhoff’s voltage law, determine the unknown voltages for the configurations. Do not calculate the current.
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Anonymous200
Using the voltage divider rule or Kirchhoff’s voltage law, determine the unknown voltages for the configurations. Do not calculate the current!
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For the series configuration constructed using standard value resistors:
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Anonymous200
Without making a single calculation, which resistive element will have the most voltage across it? Which will have the least?
Which resistor will have the most impact on the total resistance and the resulting current? Find the total resistance and the ...
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Parts (A) through (E) of this problem should be done by inspection—that is, mentally. The intent is to obtain an approximate solution without a lengthy series of calculations. For the network in figure:
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Anonymous200
What is the approximate value of I1, considering the magnitude of the parallel elements?
What is the ratio I1/I2? Based on the result of part (a), what is an approximate value of I2?
What is the ratio I1/I3? Based on the result, ...
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For the network: A) Find the current through each branch. B) Find the total resistance. C) Calculate Is using the result of part (b). D) Find the source current using the result of part (a). E)Compare the results of parts (c) and (d).
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Anonymous200
For the network: A) Find the current through each branch. B) Find the total resistance. C) Calculate Is using the result of part (b). D) Find the source current using the result of part (a). E)Compare the results of parts ...
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A part made of Ti-6Al-4V (solution treated and aged) will be subjected in service to a stress amplitude of σa = 500 MPa, and the desired service life is 60,000 cycles. (a) What are the safety factors in stress and in life? Do these seem reasonable for an actual engineering application? Explain why or why not. (b) If a safety factor of 1.3 in stress is considered adequate, how many cycles can be applied in service before the part is replaced?
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aditya19ven
A part made of Ti-6Al-4V (solution treated and aged) will be subjected in service to a stress
amplitude of σa = 500 MPa, and the desired service life is 60,000 cycles.
(a) What are the safety factors in stress and ...
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Draw FBD diagram
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Anonymous
Draw the FBD for the member AB and for cylinder D in Fig. 1. Neglect the friction at the contact surface of the cylinder. The weights of the cylinder and the member are denoted as WD and WAB, respectively.
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Problem (1) a) What is the function of the capacitor placed at the output terminals of a rectifying circuit? b) Sketch the output voltage of a single-phase full wave bridge rectifier with and without the smoothing capacitor showing the effect on the ripple voltage. c) A direct voltage of 50 volts and a direct current of 40 A are to be drawn from a single-phase half wave rectifier. The rectifier is connected to 220 v a.c supply via a transformer. Calculate the values of the secondary a.c voltage, the secondary a.c current, the peak reverse voltage, the transformer apparent power, the transformer utilization factor, and the transformer turns ratio. d) Using the values obtained in (c) for the transformer, if a coil of 10 mH in connected in series with the resistor, draw the waveforms of the output voltage and current then calculate their values. e) If a freewheeling diode is connected in parallel with the load, draw the waveforms of the output voltage and current then calculate their values.
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Yousef
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Problem (2) a) What are the basis applied for selecting rectifier diodes.? b) A direct voltage of 30 volts and a direct current of 200 A are needed for a heater. A three-phase supply with 380 v is available. i. Sketch the input a.c voltage, output d.c voltage and current, diode currents, supply currents, and the diode voltage for; – A three-phase full wave rectifier. – A three-phase half-wave rectifier. ii. Calculate the values of the transformer secondary a.c voltage and a.c current, the peak reverse voltage, the transformer apparent power, the transformer utilization factor, and the transformer turns ratio for both configurations.
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Yousef
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Yousef
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