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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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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The mechanical structure of a rotational system is given as shown. K shows the spring coefficients, B shows the viscous damping coefficients, N shows the number of theeth of gears and Jshows the moment of inertia. An external torque T(t) is applied to the system as shown. Draw the equivalent system(without gears) using the "reflecting impedances" method and derive the equations of motion. XXXXXXXX relle K₁ Dicci K₂ eeee CC T(t) 0₁(t) J₁ N₂ N₁ J₂
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QUESTION 1 Consider a 2 DOF system shown below. X1 k₁ m1 F₁ k₂ X2 k3 m₂ F2 The modeshape can be written as (1))] What is x for the second modeshape? Use scientific notation with 3 significant digits and omit units. (eg. -0.123) Let m1 = 2, m2 = 2, k1 = 9, k2 = 8, and k3 = 8.
A 480-volt three-phase load is rated at 34.5 kVA. It is to be supplied with variable three-phase voltage. Because the load is continuous, the transformers ratings are to be increased by 1.25% of the rated load. Three variable autotransformers are used to supply this load. Refer to Table 4-2 and determine the standard size of each transformer that should be used to make this connection.
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The figure below shows a four- bar linkage. If a=5m, b=7m, c=9m, d=10m, 0=60°, O-10°, a=30° and w2=1rad/s. (The figure is not to scale) Find the minimum transmission angle in degrees Find the maximum transmission angle in degrees Find toggle angle in degrees
A defibrillator passes a brief burst of current through the heart to restore normal beating. In one such defibrillator, a 36.4-μF capacitor is charged to 6.00 kV. Paddles are used to make an electric connection to the patient’s chest. A pulse of current lasting 1.00 ms partially discharges the capacitor through the patient. The electrical resistance of the patient (from paddle to paddle) is 240 Ω. How much energy is dissipated in the patient during the 1.00 ms? (need answer in J )
The following EOMS describe the behavior of an electric motor attached to a torsional spring and damper: [Li + Rz + vb = Vin(t) IÖ = k0b0 + T Importantly, the equations are coupled by the fact that 7 = k₁z and v₂ = k₂0. Here, L, R, kv, I, k, b, and kt are constants. z is the current in the motor, and is the angular displacement of the motor (clearly then, is the motor's angular velocity). Finally, the input to the system is vin (t). Your tasks: A Substituting in the coupling terms (7 = k₁² and v = k„0) into the EOMs, write the state space form of the system x = Ax + Bu, assuming your states are 2₁=2, 22 = 0, and x3 = 0. Clearly identify your matrices. B Assume that the desired outputs of the system (to be measured) are the current z, the angle and the input Vin all as separate elements in the vector y. Write the output equation y = Cx + Du. Hint: D will NOT be zero in this case. Clearly identify your matrices Assume represen angular velocity and 9(s) to

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