319 lab 6

Q3/ A/ Compare between de series and shunt generator. Q3/ B/ Briefly explain the commutating process in dc machine.

Two identical 3-phase, 500-V induction machines are mechanically coupled for a back-to-back test. One machine is motoring from a 500-V, 50-Hz supply and the other is generating on to a 3-phase, 500-V synchronous machine for which the fre- quency can be controlled. It is required to run the motoring induction mạchine at 40 hp. Neglecting the slight change in the generating machine parameters due to oper- ating at a reduced frequency, estimate the rating of the synchronous machine for this duty and the frequency at which it must be run. Line input readings for each machine No load 500 V  8.5 A 1-6 kW Locked rotor  100 V  30 A 1-6 kW Friction and windage loss per machine 0-8 kW. R = R2'

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A synchronous generator with a synchronous reactance of 1.15 p.u. is connected to an infinite bus whose voltage is one p.u. through an equivalent reactance of 0.15 p.u. The maximum permissible active power output is 1.2 p.u.A. Compute the excitation voltage E.B. The power output is gradually reduced to 0.7 p.u. with fixed field excitation. Find the new current and power angle δ.

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What is transient stability in power system?

Describe the basic circuit of DC Generators including its yoke, fid windings, interpoles, fieldpoles, difference of shunt coils and series coils, commutator and brushes ?

The single - phase ac voltage controller with inductive load. Plot the waveform of output voltage and voltage in each thyristor if the B = 10 %3D degree and delay angle (alpha) in both thyristor is 1- (30 degrees) 2- (90 degrees) 3- (120 degrees)

A shunt generator on dest is separately encited and driven at 1000 rev /min. The open circuit test chars. are given Field test CA o 0'157 O.477 0 663 O.805 1.0 129 Induced Emf CU) 12a5 300 400 100 450 500 550 ine mlc is then shunt Connected and gun at l000 revlmine with a constant field cicuit esistance of 540R. The agmature docuit resistamee is er. Deduce and plot the load Chargaetesistics of this mle,negleeting effeetof amarterre reaction.what is value of manimum lbud cursrent.

Q6/ Answer the following questions: 1. Define the DC motor drive 2. Classify the DC motor drive 3. How can be controlling on the speed of DC motor 4. Numerate the types of AC-DC converter 5. Draw the circuit of single -phase converter on separately excited DC motor 6. Write the equations the following: I. Speed(W)= II. Torque developed(Td): III. Vm=..

Kindly solve what is ask with complete solution and circuit diagram so that I can understand. I want a handwritten solution and write the givens. Thank you very much ma'am/sir..

1) P.f of inductive load is corrected by connecting . . across it. .... ...... 2) Open circuit test measures . losses. 3) The output variables of a motor are and ........ ... .... 4) For a motor output power is given by ...... 5) Flux control, voltage control, and armature control are three methods for ....... of dc motor. 6) A transformer takes 100V at primary and gives 50V at secondary, its turn ratio equals 7) The given set of equations represents . . Ea – laRa = Vr , la = IL , %3D Rf 8) The given set of equations represents. la = !, + IL, VT Rf Ea – laRa = Vr , 9) The given set of equations represents . Ea – laRa – IseRse = Vr, la = Ise = l, %3D | 10). .. has more initial torque than shunt dc motor.

9-In a the shunt field winding is connected in parallel with the armature winding only. Ish Series . Field EJR Shunt Rsh Rse Field 10-The consist of and 11- E = (V – IaRa ) then N = LOAD

What is a synchronous capacitor? What is the practical benefit of using one?

What is use of solenoid coil in the pressure to converter? a. To produce magnetic field in the LVDT b. To change the LVDT output c. To bring back the pivoted beam normal position d. To produce linear displacement in bellows

Illustrate open circuit internal circuit and external characteristic for dc shunt generator

I want to represent each point on the graph paper with its corresponding scale written alongside it.

Design a LabVIEW program that sweep Servo motor from 0 degrees to the specified angle and repeat Design a LabVIEW program to demonstrate a 28BYJ-48 stepper motor operating in both directions: 5 seconds anticlockwise and 5 seconds clockwise

Kindly solve what is ask with complete solution and circuit diagram so that I can understand it clearly. I want a handwritten solution. Thank youuu!!

can someone help me out with this question 5 and pls explain clearly, tq

2- Draw the equivalent circuit of the induction motor, showing the value of the Parameters the circuit. (the Parameters from Open circuit and Short circuit Test)

Comment briefly on the relationship between input and output power at varying excitation levels and on the relationship between excitation and power factor or reactive power, when the synchronous machine is connected to an infinite busbar

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[4] The half wave ac controller has rms output voltage equal to input rms Vs at..........    (5] In single phase bidirectional ac controller, the RMS output voltage can be varied between zero to.............. of input voltage

current and on-time? 2. A 60V chopper drives a resistive load of 12fL The chopper frequency is set to 1 kHz. Calculate the values of average and rms load currents and load power for a turn-on time of (a) 0.2ms, (b) 0.6ms.