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Determine the service overcurrent protection device rating and undergrounded and grounded service conductor size. Use XHHW copper conductor and 75oC device terminal ratings and allow for 25% load g
A residence supplied by a 120/240 V, single-phase, three wire service has a total estimated demand load of 25,000 VA. The total estimated neutral loading is 17,000 VA. Determine the service overcurr
Phosphorus atoms, at a concentration of 5*10^16 cm^-3, are added to a pure sample of intrinsic silicon. Assume the phosphorus atoms are distributed homogeneously throughout the silicon sample. What
A galvanometer has 25 divisions in full scale. Its sensitivity (k) is .2mA/div and resistance (Rg) is 50 ohms. Construct voltmeter using the galvanometer and a 2950 ohms resistor, how will you use t
The O.C and S.C test data are given below for a single phase, 5 kVA, 200V/400V, 50Hz transformer. O.C test from LV side:200V 1.25A 150WS.C test from HV side:20VV 12.5A 175W
A 20-m3 tank contains nitrogen at 23 C and 600 kPa. Some nitrogen is allowed to escape until the pressure drops to 400 kPa and the temperature to 20 C. Determine the amount of nitrogen gas that has
A circuit contains a known resistance of 2.4 kO, and an unknown inductance. a) When a 12-V battery is connected, what is the current in the circuit a long time after the switch is closed
The steady state solution of stable systems is due to simple poles in the jO axis of the s-plane coming from the input. Suppose the transfer function of the system is: H_ (s)= (Y(s))/(X(s)) = 1/([(s
How to calculate the transient time need for the simple passive low pass filter Why it needs the time more then 5-Tau (RC) to become a steady state
Design and draw the schematic for a conventional hardwired circuit that will perform the following circuit functions using to two break-make push buttons: Turn on light L1 when pushbutton PB1 is pre
The charge leaving the positive reference terminal of a voltage source is q(t)= [6sin120pi*t - 8cos120pi*t]mC the voltage source value is v(t)= 160cos120pi*t V. A) Determine the power supplied by the
b unit vector a θ dotted with unit vector a y (dotted means dot product) θ is from spherecial coordinates and starts from the postive z direction c unit vector a r crossed with unit vect
Select the appropriate resistor to add to the circuit in order to reduce the voltage across the bulb to the appropriate level. Choose the nearest 10-% resistor value and determine what its power rat
There are three different beams and they asked us to choose which beam would you use to build an object that incurs high stress. Should I choose the beam with the lowest deflection or with the highe
An amplifier with 40 dB of small-signal open-circuit voltagegain, an input resistance of 1M-ohm ,and an output resistance10-ohm drives a load of 100-ohm .What voltage and power gains(expressed in dB
Design an active first-order RC low-pass filter (using a 741 op-amp) with a cut-off frequency of 10 kHz and a band-pass gain of 20 dB. Derive the step response and voltage transfer function.
When a 100-k load is connected to a signal source, the output voltage is 30 mV. If a 10- k resistor is used to load the same signal source, the output voltage is observed to be 10 mV. Find the corre
Your embedded systems application requires you to implant a sensor in each of the taxiways of the airport and connect the sensor wires at the base of the ATC tower. The worst case distance is two mi
You plan to integrate a sensor that operates at 24 VDC and 2A At distance of 100 feet from your controller under normal conditions. What gauge (AWG) of wire would you use if you needed to limit your
Consider two signals that have the same frequency. When the amplitude of the first signal is at its maximum, the amplitude of the second signal is at half its maximum from the zero level. What is th
a 350° pot is connected to a shaft through a 3:1 gear ratio a. What is the maximum angle the shaft can turn b. What is the maximum difference in degrees from where the shaft is and where the pot r
A 10 K-ohm pot is used as a position sensor with a 10 -V supply. The input resistance to the interface circuit is 50 K-ohm. Find the loading error when the pot is in the middle of its range.
in a hydroelectric generating station the difference in level between ,the water surface and turbine driving the generators is 425 meters.if 1250 liters of water is required to generate 1 kwh of ele
a. The input G=0, H=0 is not allowed for this flip-flop. Why b. What is the excitation table for the GH flip-flop c. Use GH flip-flops to construct a counter to count the following sequence: 000 ->