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A 220 V shunt motor has armature and field resistances of 0.2Ω and 220Ω respectively. The motor is driving constant load torque and running at 1000 rpm drawing 10 A current from the supply.
Calculate the new speed and armature current if an external armature resistance of value 5Ω is inserted in the armature circuit. Neglect armature reaction and saturation.
A 3-phase,4pole star connected turbo alternater has a cylindrical rotar. The reactance and resistance perphase of winding is 2.5 ohms and 0.15 ohms.The alternater hasterminal potential difference of 6600V when delivering a current of250Amps.
Common radio uses two modulation schemes-they are AM and FM.Explain very briefly what the FM scheme is. How does it differ fromAM what are the advantages and disadvantages of each scheme
Analysing harmonic content of ac voltage waveforms, An a.c. voltage, V, comprises of a fundamental voltage of 100 V rms at a frequency of 120 Hz, a 3rd harmonic which is 20% of the fundamental
Design the datapath that will add the value in register A to the value in any of the registers R0 through R3 and store the result back into any of the registers R0 through R3. The inputs to the datapath should be two-bit control signals src and de..
An AM receiver, operating with a sinusoidal modulating signal and 80 percent modulation, has an output signal-to-noise ratio of 30 dB. a) What is the correspoding carrier- to - noise ratio
In most situations it is also desirable to send information from the process to be controlled--in this case the 500-gallon tank--to a central station for processind and storage. this information can be transmitted and processed in different ways.
Design the system block diagram and one bit cell of a conditional counter which counts only when input count=1?
sum up all the double words stored in memory area 60000h to 60100h. same problem as program 5 on pg 166. use good
Cars arrive at a toll plaza at the rate of 60 cars per hour. There are four booths, each capable of servicing 30 car per hour. Assume a Poisson distribution for arrivals and an exponential distribution for service time.
In a 2-pole, three phase PMAC synchronous motor, the torque constant kT and the voltage constant kE are 0.6 in respective MKS units. The synchronous inductance, LS is 10 mH. The stator winding resistance per phase is 1 Ω.
Design a noninverting amplifier with gain of 20. Maxium opamp output current of 0.5 mA should occur for maximum outputvoltage of 8 V.
Consider the function f(A,B,C,D) = fm(0,1,4,5,8,9,13,14,15) 1. Map the function, and obtain a minimal sum of products cover. 2. Express the sum of products expression for the minimal cover. F (SOP)
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