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obtain the rotational losses of a universal motor if you are only given the impedance, RPM, voltage,poles, frequency, current and pf? Basically I need to solve for the shaft torque and efficiency but can't get my Pout value without the rotational losses. I've already solved for the Power Developed but need the rotational loss to get my Pout. Here are the parameters: 110V, 60 Hz, 2 pole, operating at 12,500 RPM at full load and draws a current of 5A at pf .74 lagging. Rs = .5 ohms, Xs = 2.235, Ra = 5.2, Xa = 12.563.
Write the formula for the magnetization volume current density J M and magnetization surface current density JMS in terms of magnetization vector M. 4. A sphere has permanent magnetization where is a positive constant.
A 20V voltmeter with a sensitivity of 10,000 ohms / volt rating and a 5A ammeter are used to measure the power being dissipated in a dc circuit. The voltmeter reads 13V and the ammeter 2.1A.
To analyze electric circuits, it is often necessary to solve simultaneous equations. To find the voltages Va, Vb, and Vc at nodes a, b, and c, the equations are 2(Va-Vb) + 5(Va-Vc) - e^(-t) =0 2(Vb-Vc) + 2Vb + 3(Vb-Vc) =0
1.Given S-DOman transfer function H1(s)= 1/(s+2). What is the time response H1(t). 2. Given H2(s)= (2s+5)/(s^2 +3S+2), what is h2(t) 3. Calculate the data value and address location for the following 8-bits date: 01111011 Buss address 10110011
If an input signal with v(t) = 10 sin ( 2pi f 1592 t + 0º ) is applied to a series RL circuit with R = 1000-ohm and L = 0.1 H, what is the magnitude of the total circuit impedance
The voltage drops across three resistors in series are measured 10V, 15V, and 25V. If the largest resistor is 47 ohms, what is the value of the smallest resistor?
given a "black box" with two terminals. You play around with the box for awhileand make the following observations: (i) The output voltage from the box is sinusoidal. (ii) The peak magnitude of the open-circuit voltage at the terminals is 5 V.
the discrete-time systems, where y[n] and x[n] are, respectively the output and the imput sequences, determine whether or not the system is (1) linear, (2) causal, (3) stable, and (4) shift-invariant: y[n] = x[n+3];
In general, what observations can be made about a physical system that has pole and zero locations that are not eitehr real-valued or complex conjugate pairs
A filter with a great deal of attenuation must be placed in an amplifier chain. Ignoring all considerations other than the desire to minimize noise figure, would it be preferable to put the filter before or after a low noise amplifier Why
What is correct symbol rate (pulse rate) for this link? What is the bit rate with BPSK modulation? What is the bit rate with QPSK modulation?
when an AC source is connected accross a 12.0 resistor,the rms current in the resistor is 8.00 A find (a) the rms voltage accross the resistor,(b) the peak voltage of the source , (c) the maximum current in the resistor
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