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A doorbell is connected to a transformer whose primary contains 3000 turns and which is connected to 120V AC. If the doorbell requires 0.2 A at 10 V, find the numbers of turns necessary for the secondary winding and the current that flows in the primary.
A 1.1 mF capacitor has initial voltage of 12 V.The energy stored in the capacitor is used to light up a 0.7 KOhm lamp.Assuming that the lamp is completely dimmed when the current through it is less than 0.2 mA, for how long can the capacitor susta..
(a) Generate a row vector x of length 40 containing the integers 0, 1, 2, ...39. (b) Generate a row vector y containing 40 values, each of whom is a random real number in the interval [4:5; 7:5]. (c) Produce a new vector v equal to the sum of the two..
an abc-phase sequence three-phase balanced wye connected 60 Hz source supplies a balanced delta-connected load. the phase impedance in the load consists of 20 ohm resistor in series with a 50 mh inductor and the phase voltage at the source
A PWM is used in 8-bit mode to produce a signal with a 1 msec period and 60% duty cycle. Determine the value required for any pre-scaling, and the values for the period, and duty cycle registers. The E-clock is 24 MHz.
(a) list the minterms and maxterms of each function (b) list the minterms of ~E and then ~F (c) list the miinterms of E+F and then E.F (d) express E and then F in sum-of-minterms algebraic forms
Assume that h is a random variable with PDF. Pn(h)=0.1*d(h-1)+0.9d(h-3). n is a zero mean white gaussian noise with variance 0.5. Assume that the channel state info is available at the reciever for each of the three branches.
a. Find the mean number of heads in three coin tosses. The coin is biased towards getting tail where the probability to get a tail is 0.8. b. If the number of tosses is 100, what is the mean number of heads
Two loads connected in parallel are supplied from a single-phase 240-V rms source. The two loads draw a total real power of 400kw at a power factor 0f 0.8 lagging. One of the loads draws 120kW at a power factor of 0.96 leading. Find the complex po..
Design a dc power supply that provides a nominal dc voltage of 12V that will supply a load current of up to 30mA. Use a Bridge rectifier in your design and isolate your circuit by use of a transformer at the input.
a. What dopant should the engineer use to obtain the largest fraction of the boule with a doping concentration between 2 - 6 x 1014 cm-3 b. What is the range in resistivity values for this doping variation c. What is the weights of the dopant and Si..
Which FET operates in both Depletion and Enhanced mode and how do you recognize the mode by just looking at the Family of Drain Characteristic Curves
a) How many ADC bits are required b) What is the maximum allowable noise at the amplifier output c) Design the analog amplifier/filter. A temperature transducer has the relationship: R= 200 + 10T where R is the O and T is in C(Celcius).
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