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Suppose that a shunt-connected machine operates at 800 rpm on the linear portion of its magnetization characteristic. The motor drives a load that requires constant torque. Assume that RA = 0. The resistances in the field circuit are RF = 50Ω and Radj = 25Ω. Find a new value for Radj so that the speed becomes 1200 rpm. What is the slowest speed that can be achieved by varying Radj?
what are the advantages and disadvantages of using PLDs, including FPGAs, as compared to using discreet logic-integrated circuit chips
i. The sender sends frames with increasing sequence numbers to the receiver. Only frames received in correct order are accepted by the receiver. ii. The receiver sends a NAK back to the sender when it receives an out-of-sequence frame.
What is Intermediate switch, its construction, working principle and uses in different wiring (lighting etc) circuits?
For pulse oximeter signals for heart rates less than 240 beatsper minute, what do you expect will be the important spectral andother signal characteristics that need to be preserved in an electronic system.
Consider a baseband transmission channel with a bandwidth of 10MHz. Which bit rates can be supported by bipolar line code and by Manchester line code
deposit Aluminum with a deposition rate of 100 nm/min. The substrate temperature is 300K. During the deposition, your chamber has an air leak that provides a residual O2 partial pressure of 10-6 Torr.
Compute the rectangular form of the four-point DFT of the following signal, which is zero for n =4. Compute the inverse DTFT of: X(ω)=sinΩ cosΩ
How to Prove that Volume of The conductor is Inversely proportional to the squire of Voltage ( Vol = 1/V2). And what is the effect of this relation on Transmission and Distribution System ?
we have two light bulbs a and b. bulb a has an exponentially distributed lifetime with mean lifetime 4 days i.e la
Problem: Calculate the transfer function for the circuit shown below. Express your result as ratio of two polynomials.
The acceptor concentration in a particular junction is 10^6/cm^3 and the donor concentration is 10^15/cm^3. Assume ni=1.5*10^10/cm^3. Find the junction built-in voltage.
We use the time constant to characterize transients in electric circuits. In physics, the half-life is often used to characterize the exponential decay of physical quantities such as radioactive substances.
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