The circuit in the given figure is to control the speed of a motor such that the motor draws currents 7 A, 4 A, and 1 A when the switch isat high, medium, and low positions, respectively. The motor can be modeled as a load resistance of 20 m2. Determine the seriesdropping resistances R₁, R2, and R3.10-A, 0.01-2 fuse6 VHighMotorLowMediumwwwR₁wwwR₂wwwR3The series dropping resistances R1, R2, and R3 areΩ.Ω, andQ, respectively.

Answered: The circuit in the given figure is to…

Electrical Transformers and Rotating Machines

4th Edition

ISBN:9781305494817

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter2: Magnetic Induction

Section: Chapter Questions

Problem 9RQ

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Q5/ Determine the Nodal Voltage for the figure 13 V₁ R3 ww 20 z 4A www 12 Ry 202 R₂602 ZA
1. Given the circuit in Figure 2, determine the resistance R₂ such that V₁ = VB. Then find the voltages Vд and VB. Show steps of your calculations. 20 V R₁ 500 Ω. 0 R3 200 Ω R4 R₂ 50 Ω Figure 2: Circuit for Exercise 1 2. Use Multisim Schematics to create the circuit in Figure 3. Assign the resistor R₂ value based on your calculations in previous step. Run the simulation to obtain the DC voltage at terminals VA and VB. Compare the values with the calculated voltages in previous step. Are they identical? Take a screenshot of your Multisim circuit schematic, showing the voltage values, and include it to your lab report. Vs -20V XMM1 +. R1 500 Σ R3 2000 XMM2 R2 R4 ≥500 Figure 3: Multisim Simulation Circuit with instruments for Exercise 1 3. Add a 100 resistor between terminals VA and VB and connect an ammeter to measure the current through the resistor. Is the current value consistent with the expected theoretical value? Justify your answer. Take a screenshot of your Multisim circuit…
The potentiometer Rx (adjustable resistor) in the given figure is to be designed to adjust current ix from 10 mA to 1 A. Calculate the values of R and Rx by setting the potentiometer to its minimum and maximum values. Assume V = 160 V. (NOTE: Choose a combination, which makes the potentiometer most sensitive.) V R ww Rx ww The value of R and Rx are Ω and kQ, respectively.
Find out the error for the given program io = 1.7e-8; % dark saturation current in amperes tc = 27; % cell temperature in degree celsius isc = 250 ; % short circuit current density A/ square meter pin = 820; % solar radiation in w/square meter k =1.381e-23; % Boltzmann's gas constant e= 1.602e-19; % electronic charge t= 273+tc % cell temperature in Kelvin vmax=0.526; % mayi mum voltage in volts imax = (e*vmax)*(isc+io)/(k*t+e*vmax) pmax= vmax*imax efficiency = (pin/pmax)*100 O error in efficiency O no error O Error in pmax O Error in imax O no output
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2. For the circuit shown in fig. 2. Find the Node Voltages using Nodal Analysis. W voor 20 200 10 I - 6A 20° 20 100 宣 Fig.2 E-30V 20°
A six-pole lap wound armature rotating at 350 rpm is required to generate 260 V. The effective flux per pole is about 0.05 Wb. If the armature has 120 slots, determine the suitable number of conductors per slot and hence determine the actual value of flux required to generate the same voltage

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