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Design a metering circuit to measure the line-to-neutral voltage and line currents on a three-phase four-wire, 4.16-kVswitchgear main circuit breaker rated at 2000 amperes.
A three-phase four wire 480Y /277 volt service is sized to carry 375 amperes per phase. Sketch a metering circuit,including instrument transformers, that provides line-to-neutral voltage, phase curr
Design a circuit that given a 4-bit BCD digit(0-9) will produce a 2-bit quotient and a 2-bit remainder for a division by3. This circuit will have four inputs--the four bits of the BCD digit--and fou
A 138-kV, three-phase short transmission line has a per-phase impedance of (2+j4) ohms. If the line supplies a 25-MW load at 0.8 power factor lagging, calculate (a) the efficiency and (b) the sendin
A person accidentally grabs conductors connected to each end of adc voltage source, one in each hand. Assume that the resistance of an arm is 400Ohms, the resistance of a leg is 200 Ohms and the resis
At what frequency does an RC low pass filter attenuate by 6dB(output voltage equal to half the input voltage) What is the phase shift at that frequency
An inverter has a measured delay of 2ns. If five identicalinverters are connected in series, where the the first one isconnected to the last inverter, such that the voltage at the firstinverter will
Design an even parity generator for a 3-bit word. This circuit will have three inputs(the 3 bits of the word) and oneoutput. This output should be 1 if there is an odd number of1s in the input word;
consider a 4-bit counter that couts from 3 (0011) to 12 (1100)and then wraps around. If the counter enters an unused state(such as 0000) because of noise, it will restart from 0011 at thenext rising
One kilowatt-hour is the amountof energy transferred by a 1 kW of power in a time period of 1hour. A power company billing statement reports a user'stotal energy to be 1489 kWh. Find the number of j
Assume a 35micro Ampere current, due to the flow of electrons. What is the average number of electrons per second that flow past a fixed reference cress section that is perpendicular to the directio
A temperature transmitter has aninput range of 0 to 100 degrees celsius, an output range of 4to 20 mA, and an accuracy of ± 0.5%. The ideal transmitterhas a linear output from 4 mA at 0 degre
A simple voltage divider circuit is used to measure the output of a transducer whose total resistance is 1000 ± 1percent. The internal resistance of voltmeter is 10000 ± 5percent, and
How much energy in Kilowatt hours is initially stored in the battery If the battery costs $75 and has a life 0f 300charge-discharge cycle, what is the cost of the energy in dollarsper kilowatt hour
A certain type of D-cell battery that costs $0.50 is capable of producing 1.2 V and a current of 0.1 A for a period of 75 hours. Determine the cost of the energy delivered by this battery per kilowat
a) starting from an initial state of 1000list the sequence ofstates of the four flip-flops after each shift. b) Begining in the state 10...0,how many states are there inthe count sequence of an n-bit
design an Armstrong indirect FM modulator to generate an FM carrier with a carrier frequency of 96 MHz and Df= 20 kHz. A narrow-band FM generatorwith fc = 200 kHz and adjustable Df in the rangeof 9
A mini-mart has just installed a bar codereader to improve efficiency at their checkouts. Assume that the bar code is to access a filethat store the product descriptions, unit price and quantity of
The current is the flow of electrons through conductor ,and voltage is the force that exerted on electrons to flow through the conductor, then why in many electric circuit the voltage is very high wh
Design a full-wave rectifier to provide a dc output of 28V at a current of 4A, with a ripple of not more than 3%. A linevoltage of 120V (rms), 60Hz is available.
A 3-phase cage rotor induction motor has a full load slip at 5% . The standstill current at rated voltage is 6.5 times full load current . Find autotransformer tapping to give full load torque at st
design and isolate your circuit by use of transformer at the input, Select suitable and standard diodes in your design , Inyour design assume a 1V peak ripple across the filleting capacitor.After th
Using energy concepts, find the internal self inductance per unitlength of a loss-less, conductive solid wire of radius ρ. You may assume that the current is uniformlydistributed through the cr
A coaxial transmission line consists of two concentric cylinders.The inner cylinder has radius r1 and the outer cylinder has radius r2. The inner cylinder has a surfacecharge density ρS C.m-2, t
A 50 Hz, 440 V, 3-phase , 4-pole induction motor develops half the rated torque at 1490 r.p.m. with the applied voltage magnitude remaining at the rated value, what should be its frequency if the mo