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A 220V , 13.47KVA, 0.707 lagging power factor load is in parallel with a three phase wye- connected round rotor synchronous motor having a synchronous reactance of 1.27W. The motor draws 33KW at apower angle of 30 degree. Calculate the reactive power of the motor and the net (overall) power factor of the motor load combination.
A series RLC circuit connected to a 100-V 60-Hz source draws a current of 2.5 A. The measured power factor for the circuit is 0.7 leading, and the inductive reactive power is 300VAr. Calculate the resistance, inductance and capacitance.
A source X produces symbols A, B, C, D, and E with probabilities 0.5, 0.25, 0.125, 0.0625 and 0.0625 (a) Find the information content of X. (b) Give a fixed length code for X. Compute its efficiency. (c) Derive a Huffman code for X
A 4-element unform linear array with interelement spacing of λ/2 is operated as a broadside array , find the beamwidth betwen nulls and the side lobe level in dB . find the phasing of the elements in order to rotate the direction
A number consists of multiple characters when written. In the software the numbers are stored as a binary value ultimately at the lowest level of the code translations. The compiler does the translation from binary to hex to decimal.
A tooling designer is designing a jig that will insert pins into the flip-up handles of a coffeemaker. The bin to hold the pins should hold enough pins for 3 hours' work before reloading. The engineering estimate for the rate of inserting the pins..
For a short transmission line having a series impedance Z=R+jXL, write the relationships between the sending-end and the receiving-end voltages and currents. Assuming a line with R=0, XL=20 ohm feeding a 1MW load at 0.95 power factor
A balanced Y-connected three-phase motor uses 20 kW of power at 0.81 pf lagging when connected to 220 V lines. What is the line current. What is the current in one phase of a delta-connected generator.
The shaft output of a three-phase, 60 Hz induction motor is 100 HP. The friction and windage losses are 900 W, the stator core loss is 4200 W, and the stator copper loss is 2700 W. If the slip is 3.75%, what is the effïciency of the motor
Determine which of the machines with the following specifications is realizable with a finite number of states. 1) A machine is to produce an output of 1 whenever the number of 1's in the input sequence exceeds the number of 0's.
A wafer 100mm in diameter is mounted in an electron-beam evaporation system in which the spherical radius is 40cm. Use Eq. 6.7 to estimate the worst-case varation in film thickness between the center and edges
A total of 3.00 106 electrons are placed on an initially uncharged wire of length 1.44 m. (a) What is the magnitude of the electric field a perpendicular distance of 0.412 m away from the midpoint of the wire
write a program that would send out through the serial port an array of twenty bytes of data( need a FOR loop) stored in memory locations starting from 30H( must use a ponter) with even parity added as the ninth bit.( skip baud rate).
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