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For the hoist drive system shown in Fig. P.7.39.
(a) Calculate the minimum size of the motor.
(b) If the line voltage drops to 180 V, what would be the hoisting speed?
if a circuit contains 3 automatic switches and we want that, with a probability of 95%, during a given time interval they are all working, what probability of failure per time interval can we admit for a single switch
(a) find the value of a and K so that the relative damping ratio of the system is 0.5 and the rise time step response is approximately 1 s. (b) with the values of a and k found in previous question above , find the steady state of the system .
A short distance system is composed of two identical transmission lines with an amplifier between them. A 1 mW signal is transmitted at one end and is received at the other end with an SNR of 22 dB.
WHAT ELECTRICAL PARAMETER DOES AN OHMMETER MEASURE AND WHAT ARE ITS UNITS. SHOW BOTH NAME AND SYMBOL FOR THE PARAMETER AND ITS UNITS.
with karnaugh maps, find a minimal sum-of-products expression for each of the following logic functions. Indicate thedistinguished 1-cells in each map a) F = ΣA,B,C,D (1,4, 5, 6,11, 12,13,14,15)
Describe how three-position control might be used to cause a windmill to always face into the wind. The windmill is rotated with a bidirectional DC motor.
An acb sequence balance three -phase Y-connected sourcefeeds a delta-connected load through a distribution line having animpedance of 1+j3 Ω. the load impedance of 117-j99 Ω. Thesource voltage in b -phase is 20
Why does the decoder circuit serve as the foundation for the demultiplexer circuit?
The scattering parameters of a GaN HEMT device are given at four frequencies in Table 11.8. Use the K - ? test to determine the stability of this transistor at each frequency.
How to interface arduino with a bluetooth module and control fans and led's?
Goal of project is to model a system and to design a controller for the system so that the closed-loop system performs satisfactorily - Design a switch mode PWM DC-DC converter for the speed regulation of the DC motor.
A network connected between terminlas a and b consists of two parallel combinations that are in series. The first parallel combination is composed of a 10 OHM resistor and a 19 OHM resistor.
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