Q: A 10-pole lap-wound generator is rated at 120 V, 500 A, and 750 rpm. The armature has 163 slots with 4coil sides per slot and 2 turns per coi1. The hot winding resistance is 7.2 mn, and the brush contact drop is 1.5 V.a. Find the rated load power, the developed torque, and the flux per pole; also find the per coil and per turn resistances and emfs.b. The armature coils are reconnected to form a simple wave winding with the

Q: A 10-pole lap-wound generator is rated at 120 V, 500 A, and 750 rpm. The armature has 163 slots with 4coil sides per slot and 2 turns per coi1. The hot winding resistance is 7.2 mn, and the brush contact drop is 1.5 V.a. Find the rated load power, the developed torque, and the flux per pole; also find the per coil and per turn resistances and emfs.b. The armature coils are reconnected to form a simple wave winding with the

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter11: Transient Stability

Section: Chapter Questions

Problem 11.3P

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A 10-pole lap-wound generator is rated at 120 V, 500 A, and 750 rpm. The armature has 163 slots with 4coil sides per slot and 2 turns per coi1. The hot winding resistance is 7.2 mQ, and the brush contact drop is 1.5 V.a. Find the rated load power, the developed torque, and the flux per pole; also find the per coil and per turn resistances and emfs.b. The armature coils are reconnected to form a simple wave winding with the speed and flux per pole unchanged. Find the new machine ratings. (current, voltage, power)d. For both lap and wave connections, find the average voltage between adjacent .commutator segments
A DC shunt generator has a full load output of 10kW at a terminal voltage of 240V. The armature and the shunt field winding resistances are 0.6 and 160 ohms respectively. The sum of the mechanical and core-losses is 500W. calculate the power required in kW at the driving shaft at full-load, and the corresponding efficiency and voltage regulation
A 80 kW, 480-V, 60-Hz, six pole induction motor has a slip of 5 percent when operating at fullload conditions. At full-load conditions, the friction and windage losses are 300 W, and the core losses are 400 W. For full-load conditions, compute the induced torque,T-ind, in N-m.
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The armature of a 6-pole separately excited dc generator is triplex wave wound with 534 conductors. This machine delivers power to the load at 200V while being driven at 900rpm. At this load, the armature circuit dissipates 640W. If the flux of this generator is 180-mWb, determine the kW rating of the load served. Assume a total brush drop of 2V.
A long shunt compound generator delivers 100 A at 250 V. The armature, shunt field and series field resistances are 0.02 Ohms, 50 Ohms and 0.05 Ohms respectively. If the Break Horse Power (BHP) or the power developed by the shaft torque of the driving engine is 40, determine the stray loss.
The armature of a 6-pole separately excited dc generator is triplex wave wound with 534 conductors. This machine delivers power to the load at 200Vwhile being driven at 900 rpm. At this load, the armature circuit dissipates 640W. If the flux per pole of this generator is 180- mWb, determine the kW rating of the load served. Assume a total brush contact drop of 2 V.