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Consider N - n1n2 identical cells, each of emf e and internal resistance r. suppose n, cells are joined in series to form a line and n2 such lines are connected in parallel. The combination drives a current in an external resistance R.
(a) Find the current in the external resistance,
(b) Assuming that n, and n2 can be continuously varied, find the relation between n1, n2, R and r for which the current in R is maximum.
The core loss of a 5 kVA single phase transformer with normal voltage applied to the primary is 75 Watts. The maximum efficiency occurs at 60% of full load kVA. What is the full-load efficiency of the transformer at 0.80 power factor
consider a ntnr 44 mimo channel. for the input of the channel x x1x2x3x4 assume that each xi is drawn from a bpsk
For the foregoing heat rate and a copper heater of thermal conductivity k h = 400 W/m · K, what is the required volumetric heat generation within the heater and its corresponding centerline temperature?
A Si pn junction diode is described by its I-V equation, I?= Is exp (V?/V?) ,where V?=25mV, Is=10-14A . It is desired to derive constant drop and PWL models for the diode assuming an operating current between 1mA and 3mA.
Using time lines, show the arrival time, the process duration, and the departure time for each packet. Also show the contents of the queue at the beginning of each millisecond.
If a zener diode has a breakdown voltage of 8[V], find the dielectric strength of the semiconducting material if it is assumed that the entire voltage is dropped across the pn junction, which has width 0.3[μm]. Assume that E is uniform across the ..
At t = -250/6 μs, a sinusoidal voltage is known to bezero and going positive. The voltage is next zero at t = 1250/6μs. It is also known that the voltage is 75 volts at t =0. a) What is the frequency of v in herts
Determine the RMS generated voltage of an alternator used for a 50 Hz system if it has a flux per pole of 0.015 Wb, 72 turns per phase and a winding constant of 0.96
A circuits is needed to realize the transfer function \(T_{v}(s)=\pm \frac{(s+125)(s+500)}{(s+250)(s+1000)}\) (a) Design a circuit using two OP AMPs (b) Design a circuit using only one OP AMP.
The 765-kV 3φ line is 400 mile long and delivers 100 MW at 750 kV at 95% power factor lagging. Find the sending-end voltage and current and the transmission efficiency. Use the long-line model. Series impedance z = 0.02 + j0.54?/mi, shunt admittan..
The current flowing through a 300-mH inductance is given by 5e(-200t). Find expressions for the voltage, power, and stored energy. Sketch the waveforms to scale for 0
for each implicant in f indicate its reducibility.perform the expand operation on fa b c e0 1 2 5 6 7 where e
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