An ammeter model consists of an ideal ammeter in series with a 20-Q resistor. It is connected with a current source and an unknownresistor Rx as shown in the given figure. The ammeter reading is noted. When a potentiometer Ris added and adjusted until theammeter reading drops to one half its previous reading, then R= 62 Q. What is the value of Rx?IA20 ΩAmmetermodelRxThe value of Rx isΩ.R

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Answered: An ammeter model consists of an ideal…

Understanding Motor Controls

4th Edition

ISBN:9781337798686

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter53: The 555 Timer

Section: Chapter Questions

Problem 2RQ

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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.
QUESTION 1 Consider a 2 DOF system shown below. x1 X2 k₁ m2 m1 F F₂ Find the fundamental frequency (in rad/s) for the system shown below. Keep 3 significant digits, use scientific notation, and omit units. Let m1 = 1, m2 = 4, k1 = 5, k2 = 9, and k3 = 1.
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1- I need answer of all sub-parts questions. Thanks The figure shows a simple model of a motor vehicle that can vibrate in the vertical direction while traveling over a rough road. The road surface varies sinusoidally with an amplitude of 0.01 m and a wavelength of 6 m. The vehicle has a mass of 1007 kg. The suspension system has a total spring constant of 40 kN/m and a damping coefficient of 20 kN.s/m. The vehicle average speed is v = 100 km/hr. The objective is to determine the vehicle steady-state displacement amplitude as well as the respective transmitted force. Calculate the forcing frequency of the pumpy road. Calculate the natural frequency of the vehicle SDOF system. Calculate the damping ratio of the vehicle SDOF.
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Problem 4-1: During a step function calibration, a first-order instrument is exposed to a step change of 100 units. If after 1.2 s the instrument indicates 80 units, estimate the instrument time constant. Estimate the error in the indicated value after 1.5 s. For this instrument, y (0) = 0 units; K = 1 unit/unit.

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