Understanding Motor Controls
4th Edition
ISBN: 9781337798686
Author: Stephen L. Herman
Publisher: Delmar Cengage Learning
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Chapter 30, Problem 13RQ
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Identify what prevents the reversing contactor to energize when plugging switch contact is closed.
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Note: use centroid method please
Provide a clear, step-by-step simplified handwritten solution (with no extra explanations) that is entirely produced by hand without any AI help. I require an expert-level answer, and I will assess it based on the quality and accuracy of the work, referring to the attached image for additional guidance. Make sure every detail is carefully verified for correctness before you submit. Thanks!.
Calculate the cutting time for a 4 in length of cut, given that the feed rate is 0.030 ipr at a speed of 90 fpm.
for the values: M1=0.41m, M2=1.8m, M3=0.56m, please account for these in the equations. also please ensure that the final answer is the flow rate in litres per second for each part. please use bernoullis equation where needed if an empirical solutions i srequired. also The solutions should include, but not be limited to, the equations used tosolve the problems, the charts used to solve the problems, detailed working,choice of variables, the control volume considered, justification anddiscussion of results etc.If determining the friction factor, the use of both Moody chart and empiricalequations should be used to verify the validity of the value
Chapter 30 Solutions
Understanding Motor Controls
Ch. 30 - Name three methods of braking a motor.Ch. 30 - How is the braking force of drum type brakes...Ch. 30 - Why are mechanical brakes often used on cranes?
Ch. 30 - What is the advantage of dynamic brakes over...Ch. 30 - What is the disadvantage of dynamic brakes when...Ch. 30 - The amount of counter torque developed by a direct...Ch. 30 - When using dynamic braking for a direct current...Ch. 30 - Name three factors that determine the amount of...Ch. 30 - How is dynamic braking for direct current motors...Ch. 30 - How is the dynamic braking force of an alternating...
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- Solve this problem and show all of the workarrow_forwardSolve this problem and show all of the workarrow_forwardProblem 2: An athlete, starting from rest, pulls handle A to the left with a constant force of P = 150 [N]. Knowing that after the handle A has been pulled 0.5 [m], its velocity is 5 [m/s] to the left, determine: a) A position constraint equation using the given coordinate system. b) An acceleration constraint equation. c) The acceleration of A using kinematics equations. d) The acceleration of B using your constraint equation. e) How much weight (magnitude) the athlete is lifting in pounds using Newton's 2nd Law. You must draw a FBD and KD of the circled assembly, assuming the pulleys are massless. Note: 1 [lbf] = 4.448 [N]. ХА Увarrow_forward
- Problem 1: For each of the following images, draw a complete FBD and KD for the specified objects. Then write the equations of motion using variables for all unknowns (e.g., mass, friction coefficient, etc.), plugging in kinematic expressions and simplifying where appropriate. Assume motion in all cases, so any friction would be kinetic. M (a) Blocks A & B (Be careful with acceleration of B relative to accelerating block A) 30° (b) Block A being pulled up my motor M (use rotated rectangular coordinate system) 20° (c) Ball at C, top of swing (use path coordinates) (d) Parasailer/Person (use polar coordinates)arrow_forwardwhere M1=0.41m, M2=1.8m, M3=0.56m, please use bernoulis equation where necessary and The solutions should include, but not be limited to, the equations used tosolve the problems, the charts used to solve the problems, detailed working,choice of variables, the control volume considered, justification anddiscussion of results etc.If determining the friction factor, the use of both Moody chart and empiricalequations should be used to verify the validity of the value.arrow_forwardQ3. The attachment shown in Fig.2 is made of 1040 HR. Design the weldment (give the pattern, electrode number, type of weld, length of weld, and leg size). All dimensions in mm 120 Fig.2 12 17 b =7.5 5 kN 60 60°arrow_forward
- Solve this problem and show all of the workarrow_forwardarch Moving to año Question 5 The head-vs-capacity curves for two centrifugal pumps A and B are shown below: Which of the following is a correct statement at a flow rate of 600 ft3/min? Assuming a pump efficiency of 80%. Head [ft] 50 45. 40 CHE 35. 30 25 20 PR 64°F Cloudy 4arrow_forwardI need help with a MATLAB code. I am trying to implement algorithm 3 and 4 as shown in the image. I am getting some size errors. Can you help me fix the code. clc; clear all; % Define initial conditions and parameters r0 = [1000, 0, 0]; % Initial position in meters v0 = [0, 10, 0]; % Initial velocity in m/s m0 = 1000; % Initial mass in kg z0 = log(m0); % Initial mass logarithm a0 = [0, 0, 1]; % Initial thrust direction in m/s^2 (thrust in z-direction) sigma0 = 0.1; % Initial thrust magnitude divided by mass % Initial state vector x0 = [r0, v0, z0] x0 = [r0, v0, z0]; % Initial control input u0 = [a0, sigma0] u0 = [a0, sigma0]; % Time span for integration t0 = 0; % Initial time tf = 10; % Final time N = 100; % Number of time steps dt = (tf - t0) / N; % Time step size t_span = linspace(t0, tf, N); % Discretized time vector % Solve the system of equations using ode45 [t, Y] = ode45(@(t, Y) EoMwithDiscreteMatrix(t, Y, u0, x0, t0, tf), t_span, x0); % Compute the matrices A_k,…arrow_forward
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