Q. The armature of 6 -pole dc generator has a wave winding containing 664 conductors. Calculate the generator emf when flux per pole is 0.06 weber and the speed is 250 rpm. At what speed must the armature be driven to generator an emf of 250 V. If the flux per pole is reduced to 0.058 weber.

  Sol.  Given P = 6; A = 2 (as wave wound); Z = 664    Φ = 0.06,       N = 250 rpm

 

           Thus    E_g = PΦZN/60A = 6/2 × 0.06 × 664 × 250/60 = 498V

 

           Now , given E_g = 250 V; Φ = o.o58 weber

 

            Then            N = ?

 

            Thus              E_g1/E_g2 = Φ₁/ Φ₂ × N₁/N₂

 

             Or               498/250 = 0.06/0.058 × 250/N²

 

              Or           N² = 130 rpm

Posted Date: 7/23/2012 1:55:01 AM | Location : United States

Ask an Expert

Related Discussions:- Calculate the generator emf , Assignment Help, Ask Question on Calculate the generator emf , Get Answer, Expert's Help, Calculate the generator emf Discussions

Write discussion on Calculate the generator emf
Your posts are moderated

Write your message here..

Related Questions

Charge carriers in semiconductors, Charge Carriers in Semiconductors ... Charge Carriers in Semiconductors In a metal, the atoms are imbedded in a "sea" of free electrons, and these electrons can move as a group under the influence of an

Determine what is the minimum required sampling rate, 1. An analog informat... 1. An analog information signal, whose maximum frequency is 6000Hz, is to be transmitted using a PCM system. The quantization error must not exceed the 1 % of the peak-to- peak an

Find fmax for circuit, Q. (a) An audio amplifier with R i = 10 k, R o ... Q. (a) An audio amplifier with R i = 10 k, R o = 0, and ¯A(ω), as shown in Figure (a), is used in the circuit shown in Figure with R S = 1 k,R L = 16 , and C = 0.2 µF. Sk

Electro-magnetic interference, (a) Give three different ways how electro-... (a) Give three different ways how electro-magnetic interference can be reduced in twisted pairs based transmission. (b) Noise are unwanted signals affecting transmission. Lis

Determine the flux densities, In the magnetic circuit shown in Figure (a) t... In the magnetic circuit shown in Figure (a) the coil of 500 turns carries a current of 4 A. The air-gap lengths are g 1 = g 2 = 0.25 cm and g 3 = 0.4 cm. The cross-sectional are

Forth generation, Forth Generation VLSI  technology  of IC made it poss... Forth Generation VLSI  technology  of IC made it possible  to design the  complete  circuit  of ALU  Arithmetic  logic unit and cu ( Control Unit ) within  single  chip  which

Assignment requirement and specification, assignment requirement and specif... assignment requirement and specification

Single Phase Induction Motor, How do I connect a Capacitor on the machine i... How do I connect a Capacitor on the machine if it has a start mechanism

Long-term plans for technical loss reduction, Long-Term Plans for Technical... Long-Term Plans for Technical Loss Reduction Long-term measures for technical loss reduction include all measures that require to be taken for the improvement of quality and r

Give the properties and application of asbesto, Give the properties and app... Give the properties and application of asbesto. Asbestos: It is inorganic fibrous material. Two kinds of asbestos are available. Chrysotile asbestos : This material is h