A 4-pole, d.c. generator has a wave-wound armature with 792 conductors. The flux per pole is[751.3 r.p.m.]1.0.0121 Wb. Determine the speed at which it should be run to generate 240 V on no-load.2. A 20 kW compound generator works on full-load with a terminal voltage of 230 V. The armature,series and shunt field resistances are 0.1, 0.05 and 115 Q2 respectively. Calculate the generated e.m.f. whenthe generator is connected short-shunt.[243.25 V] (Elect. Engg. Madras Univ. April, 1978)3. A d.c. generator generates an e.m.f. of 520 V. It has 2,000 armature conductors, flux per pole of0.013 Wb, speed of 1200 r.p.m. and the armature winding has four parallel paths. Find the number of poles.[4] (Elect. Technology, Aligarh Univ. 1978)When driven at 1000 r.p.m. with a flux per pole of 0.02 Wb, a d.c. generator has an e.m.f. of 200 V.If the speed is increased to 1100 r.p.m. and at the same time the flux per pole is reduced to 0.019 Wb per pole,[209 V]4.what is then the induced e.m.f. ?

In this question, a DC Generator, Find the speed N? Number of pole P= 4 Wave winding, number of…

Answered: A 4-pole, d.c. generator has a…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

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There are 144 slots in a 3-phase, 16-pole, 50 Hz., star connected alternator. There are 4 conductors in each slot and all the conductors in a phase are connected in series. Coil span is 1500 electrical and the flux per pole is 0.05 Weber sinusoidallly distributed. Calculate the emf induced per phase.
The emf generated in each conductor of a 6-pole simplex wave armature winding is 0.48 V. If the armature has 42 slots and 125 commutator segments, and there are four turns per armature winding element, find the terminal voltage of the generator. a. 288 V b. 264 V c. 192 V d. 240 V
A 4-pole, d.c. generator has a wave-wound armature with 792 conductors. The flux per pole is 0.0121 Wb. Determine the speed at which it should be run to generate 240 V on no-load. 1.
please answer in bond paper 2. A 20-kW, 230-V DC shunt generator has a voltage regulation of 7.5%. Find the terminal voltage at no-load.
A 4 pole dc generator runs at 750 rpm and generates an emf of 240 V. The armature is wave wound and has 792 conductors. If the total flux from each pole is 0.0145 Wb, If leakage coefficient is given as the ratio of the total flux/pole to the working flux per pole, find its value.
1. A 4 pole, de generator has a wave wound armature with 792 conductors. The flux per pole is 0.0121Wb. Determine the speed at which it should run to generate 240 V at no load. 2. A de generator when driven at 1000 r.p.m. with a flux per pole of 0.02 Wb, produces an e.m.f. of 200V.If the speed is increased to 1 100 r.p.m. and the flux per pole is reduced to 0.019 Wb per pole what will be the new value of e.m.f.
A d.c. generator has an armature e.m.f. of 100 V when the useful flux per pole is 20 mWb and the speed is 800 r.p.m. calculate the generated e.m.f. (i) with the same flux and a speed of 1000 r.p.m. (ii) with a flux per pole of 24 mWb and a speed of 900 r.p.m.
A 2 pole wave wound dc generator has 44 slots, each slot having 20 conductors. The flux/pole is 0.018 weber. At what speed the armature be rotated to get an induced emf of 220 V. What will be the induced emf developed if the armature winding is lap connected and runs at the same speed. Speed Generated Emf when lap connected
1. A 4-pole, d.c. generator has a wave-wound armature with 792 conductors. The flux per pole is 0.0121 Wb. Determine the speed at which it should be run to generate 240 V on no-load. [751.3 r.p.m.]
A long shunt compound generator delivers a current of 10A at 200V and has a series field resistance and shunt field resistance of 1 ohm and 200 ohms respectively. Then line current is a. 2A b. 1A c. 9A d. 10A
A short shunt compound generator delivers 150A at a terminal voltage is 230V. The shunt field current is 2.5A. The resistances of the armature, series field and diverter are 0.032-ohm, 0.015 ohm and 0.03 ohm, respectively. Calculate the electrical efficiency of the generator at this load.
Flux is exactly proportional to L2 times field current in a d.c generator. The generator operates at a speed of 200 revolutions per minute and has a flux of 62 mWb.f per pole. The generator is lap wound with 1500 conductors in series; determine the e.m.f. produced. If the winding is wave wound, calculate the change in excitation current required to get the same voltage as previously stated. The machine has six poles.

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A 4-pole, d.c. generator has a wave-wound armature with 792 conductors. The flux per pole is 1751.3 г.р.m.] 1. 0.0121 Wb. Determine the speed at which it should be run to generate 240 V on no-load. A 20 1JV fa20 V