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A factory is located near a water fall where the usable head for power generation is 25 m. The factory requires continuous power of 400 kW throughout the year. The river flow in a year is (a) 10 m3/sec for 4 months, (b) 6 m3/sec for 2 months and (c) 1.5 m3 /sec for 6 months.
(i) If the site is developed as a run-of-river type of plant, without storage, determine the standby capacity to be provided. Assume that overall efficiency of the plant is 80%.
(ii) If a reservoir is arranged upstream, will any standby unit be necessary ? What will be the excess power available?
In most situations it is also desirable to send information from the process to be controlled--in this case the 500-gallon tank--to a central station for processind and storage. this information can be transmitted and processed in different ways.
The processorgenerates a signal for the memory output enable input att=22 ns and decode logic generates the signal for the chipenable input at t=18 ns. What is the minimum time beforethe memory chip provides valid data
Given an analog signal x(t) 5cos(2pi*500t), for t>or equals 0. sampled at a rate of 8,000 Hz (a). sketch the spectrum of the original signal; (b). sketch the spectrum of the sampled signal from 0 kHz to 20 kHz.
Why do you think we need both rectangular and polar forms. There still seems to be some confusion about the relationship between R, Xc, OR XI and the phase angle. Take a value for R and a value for XC that is ten times smaller than R and find the..
What is the required value of the open-loop low-frequency gain? - what is the closed-loop bandwidth and closed-loop low-frequency gain if the open-loop lowfrequency gain decreases by 10 percent?
What is the channel capacity for a channel with a 300 Hz bandwidth and as S/N = 3? 2nd problem: Given a channel with a 50 kHz bandwidth and a S/N = 127, determine:
What is the function of coupling capacitors? Assuming that they are performing their intended function, how do they appear in the ac equivalent circuit? In general, what effect do coupling capacitors have on the gain of an amplifier as a function ..
(a) If the excitation volatge Eo is equal to the terminal voltage ( 4kv ), what is the maximum real power which the motor can deliver without losing synchronism (b) What is the rotor pole shift in electrical degrees
1three resistors r1 r2 and r3 are connected in series and a supply voltage of 240 v. if r2 2r1 r3 3r1 and the total
List and describe the components of IT infrastructure that firms need to manage.
What are IDS and IPS? What can they protect them against? Write a 2-3 page paper that fully answers the questions.
In the case of an open circuited p-n junction, the acceptor atom concentration is 2.5×1016/m3, donor atom concentration is 2.5×1022/m3 and intrinsic concentration is 2.5×1019/m3. Determine the value of the contact difference of potential.
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