of estion An eight-pole, 24 KW, 124 V, DC machine has a duplex LAP-wound armature which has 72 coils with 6 turns per coil. Its rated speed is 3000 RPM. Assume no dead zone Find the constant K and the flux per pole to produce 80 Volts at no-load conditions Select one: O a None O b. K= 68.86 and flux = 3.33 mWb/pole Oc. K= 68.755 and flux = 3.7 mWb/pole O d. K= 95.5 and flux = 3.7 mWb/pole

of estion An eight-pole, 24 KW, 124 V, DC machine has a duplex LAP-wound armature which has 72 coils with 6 turns per coil. Its rated speed is 3000 RPM. Assume no dead zone Find the constant K and the flux per pole to produce 80 Volts at no-load conditions Select one: O a None O b. K= 68.86 and flux = 3.33 mWb/pole Oc. K= 68.755 and flux = 3.7 mWb/pole O d. K= 95.5 and flux = 3.7 mWb/pole

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...

See similar textbooks

Similar questions

A lap-winding DC machine has 24 coils, 18 turns per coil, and 4 poles. The average flux density per pole is 1T. The effective length is 40 cm and the armature radius is 10 cm. The armature velocity is 140.2 rad/sec and the armature current is 24 A. The average flux per pole in Wb is: 6.283 0.06283 O 0.6283 0.006283
18. A 4-pole lap-wound armature has 144 slots with two coil sides per slot, each coil having two turns. If the flux per pole is 20-mWb and the armature rotates at 720-rpm. What is the induced voltage? B. 138.24 V C. 332 V D. none of these A. 120 V pruttha
An eight-pole, 24 KW, 124 V, DC machine has a duplex LAP-wound armature which has 72 coils with 16 turns per coil. Its rated speed is 3000 RPM. Assume a dead zone of 4 coils that are always beyond poles faces. Find the constant K and the flux per pole to produce the rated voltage at no-load conditions Select one: O a. K = 183.35 and flux = 1.39 mWb/ pole O b. None Oc. K173.16 and flux = 2.28 mWb / pole O d. K 183.35 and flux 2.153 mWb/pole
A single-phase 111-V, 50-Hz supply is connected to a coil with 200 turns of a coil-core assembly as shown in the given figure. Find the magnitude of maximum flux in the core. (D I N
3 For a coil, each turn faces (2t4 – t³ – 2t) milliwebers of flux. The value of induced EMF in coil for 100 turns coil at 2 sec is, (in Volts).
The resistance of the field winding(copper wire) of a DC machine is 0.25 ohm at 25°C. When operating at full-load, the temperature of the winding is 75 °C. The temperature coefficient of resistance of copper is 0.00427 per °C at 0°C. Find the resistance of the field winding at full-load.
A dc machine has hysteresis loss of 300 W and an eddy current loss of 200 W when running at 1200 rpm. At what speed will the total core losses be a quarter of the original if the flux is to be twice as the original.
An eight-pole, 24 KW, 124 V, DC machine has a duplex LAP-wound armature which has 72 coils with 6 turns per coil. Its rated speed is 3000 RPM. Ass ume no dead zone Find the constant K and the flux per poleto produce 80 Volts at no-load conditions Select one: O a. None O b. K = 68.86 and flux = 3.33 mwb/pole O c. K = 68.755 and flux = 3.7 mWb/ pole O d. K = 95.5 and flux = 3.7 mWb/ pole
An eight-pole, 24 KW, 124 V, DC machine has a duplex LAP-wound armature which has 72 coils with 6 turns per coil. Its rated speed is 3000 RPM. Assume no dead zone Find the constant K and the flux per pole to produce the rated voltage at no-load conditions Select one: O a. K = 68.76 and flux = 5.71 mWb / pole O b. K = 86.76 and flux = 4.55 mWb / pole O c. K = 78.86 and flux = 5.33 mWb/pole O d. None
Q9 / What are the function of brushes , pole and commutator in DC machine
Question: A 4 Pole DC Generator Is Wounded Lap. It Rotates At 500rpm To Be Able... A 4 pole DC generator is wounded lap. it rotates at 500rpm to be able to generate 150 V of open circuit voltage. What is the percentage decrease in the exixting flux per pole if a frequency of 10 rps can produce 120 V? %.
Topic Electrical Machines - Magnetic & E... For a coil, each turn faces (2t4 – t³ – 2t) milliwebers of flux. The value of induced EMF in coil for 100 turns coil at 2 sec is, (in Volts).