Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
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Chapter 24, Problem 3SQ
Under what condition will the motor restart automatically after a voltage failure?
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- Figure 9.58 For Prob. 9.51. 9.52 If V. =8/30° V in the circuit of Fig. 9.59, find I¸. Is 4 10 Ω Figure 9.59 For Prob. 9.52. www -j5Q 5 Ω ww j5Q Voarrow_forward9.64 Find ZT and I in the circuit in Fig. 9.71. 30/90° V 492 www 602 www N ZT (+) Figure 9.71 For Prob. 9.64. -j10 18 Ωarrow_forward(b) 10 i dt + +6i(t) = 5 cos(5t + 22°) A dt 9.26 The loop equation for a series RLC circuit gives di+2i+ [ i dt = cos 21 A Assuming that the value of the integral at t=-00 is zero, find i(t) using the phasor method. 50 Figure 9arrow_forward
- EXAMPLE 3.11 Classify the following systems into LTI and non-LTI systems: a) y(t)=x(t)cos(t), b) y(t) = (x(t+1)+x(t) +x(t − 1))/3, and c) y(t) = cos(x(t)).arrow_forward9.42 Calculate vo(t) in the circuit of Fig. 9.49. 50 Ω 60 sin 200t V Figure 9.49 For Prob. 9.42. + 30 Ω www 50 μF + 0.1 H vo(t)arrow_forwardConsider the circuit shown in the figure. The current through the 6.00Ω resistor is 4.00 A, in the direction shown. Determine the value of(a) the overall voltage in the voltage source and (b) the current andvoltage for each resistor.arrow_forward
- Design a circuit to interface 8KB RAM to the 8085 microprocessor starting at address from 2000H.arrow_forwardHANDWRITTEN SOLUTION NOT USE CHATGPT Use the mesh - current method to find io in the circuit in ( Figure 1 ) . Suppose that v = 100V . Express your answer to three significant figures and include the appropriate units.arrow_forwardThe memory map of a 8 kB memory chip begins at the location E000H. The last location of the memory address.arrow_forward
- The question was to obtain the Fourier series for the periodic function f(x)= -2 when -πarrow_forwardConsider the homogeneous RLC circuit (no voltage source) shown in the diagram below. Before the switch is closed, the capacitor has an initial charge go and the circuit has an initial current go. R w i(t) q(t) C н After the switches closes, current flows through the circuit and the capacitor begins to discharge. The equation that describes the total voltage in the loop comes from Kirchoff's voltage law: di(t) L + Ri(t) + (t) = 0, dt (1) where i(t) and q(t) are the current and capacitor charge as a function of time, L is the inductance, R is the resistance, and C is the capacitance. Using the fact that the current equals the rate of change of the capacitor charge, and dividing by L, we can write the following homogeneous (no input source) differential equation for the charge on the capacitor: ä(t)+2ag(t)+wg(t) = 0, (2) where R a 2L and w₁ = C LC The solution to this second order linear differential equation can be written as: where 81= q(t) = Ae³¹- Bel 82 = (3) (4) (5)arrow_forward2. 1. A. Simplify the models in the following block diagrams to open loop models (Y/R = G). U(s) o G₁ ROS G₂ 1-GG G4 X₁ Σ az 51- 515 G6 G₂ 5 G₂ M b₁ b₂ Σ o Y(s) X₁ byarrow_forward
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