Q: A four pole sclf excited DC shunt generator ruining at 104,66 rad's, supplics resistive load 18 Kw 1.1Q constant resistance, the flux per pole is 0.02 Wb .What will be the new generated power if the rotor speed increased to (20%) ?, and the flux per pole increased to (80%), armature resistance is 0.037 n and shunt field resistance is 220 2. Assume that the armature current increased to (10%) when the rotor speed increased.

Q: A four pole sclf excited DC shunt generator ruining at 104,66 rad's, supplics resistive load 18 Kw 1.1Q constant resistance, the flux per pole is 0.02 Wb .What will be the new generated power if the rotor speed increased to (20%) ?, and the flux per pole increased to (80%), armature resistance is 0.037 n and shunt field resistance is 220 2. Assume that the armature current increased to (10%) when the rotor speed increased.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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A 6 pole, wave wound DC shunt generator has a useful total flux of 420 mWb. The armature winding consists of 220 turns each of 0.004 2 resistance, when running at 900 RPM the armature current is 50 A. If the armature winding reconnected as lap calculate the terminal voltage in case of wave and lap given that the field circuit and the speed are kept same.
Q8) A two-pole de generator has an armature containing a total of 40 conductors connected in two parallel paths. The flux per pole is 0.02 web, and the speed of the prime mover is 30 rpm. The resistance of each conductor is 0.01 ohm, and the current-carrying capacity of each conductor is 10 A. Calculate: (a) The average generated voltage per path and the generated armature voltage (b) The armature current delivered to an external load (c) The armature resistance (d) The terminal voltage of the generator.
Please show the complete solution. Thank you so much Voltage Multipliers (electronics)
1A. Which of the following is/are a method of providing field excitation for a DC generator. a) separately excited shunt b) self-excited series c) self-excited shunt d) all of the above 1B. Which type of field winding typically has the higher resistance? a) series b) shunt
i. Briefly describe the 5 major types of DC generators according to the manner in which their field flux is produced.
Choose True (V) or false( x) for the following : 4) Reluctance is a measure of "opposition" the magnetic circuit offers to the flux. 5) The rated output power (transformer rating) can be used to determine the turns ratio of the transformer. 6) With the increase in speed of a series DC motor, Both back emf as well as line current increase. 7) When an induction motor is stationary, the stator and rotor windings form the equivalent of a transformer. 8) Increasing the load current for DC Self-excited generator Shunt-Wound Generator will increase the terminal voltage. 9) In lap windings there are as many paths in parallel and used to produce high current, low voltage output. 10) In 3-pahse induction motor, if the rotor speed increases, the rate at which the rotating magnetic field cuts the rotor bars is increasing.
Q:A8 pole long shunt DC compound generator ruining at 1200 r.pm , supplies a load of 0.255 KA at 230 V , the total flux is 0.288 Wb .What will be the new rotor speed if the flux decreased to (50%) ?, and the e.mf generated decreased to (50%) . armature resistance 0.037, scries ficld resistance 0.43 and shunt field resistance 220 all resistances in ohm.
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A separately-excited shunt DC generator has an armature resistance of 0.025 ohms, delivering 40 kW with a generated armature emf being 255 V. Find the terminal voltage and the corresponding armature current. If the terminal voltage is maintained at 253 V and the generated armature voltage is 257 V, what would be the load power?