Calculate the generator emf , Electrical Engineering

Assignment Help:

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

 

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

 

            Then            N = ?

 

            Thus              Eg1/Eg2 = Φ1/ Φ2 × N1/N2

 

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

 

              Or           N2 = 130 rpm


Related Discussions:- Calculate the generator emf

Sketch the phasor diagram, Q. A balanced delta-connected load with a per-ph...

Q. A balanced delta-connected load with a per-phase impedance of 12 + j9  is supplied by a 173-V, 60-Hz three-phase source. (a) Determine the line current, the power factor, th

Sketch the idealized bode plot, Q. Sketch the idealized (asymptotic) Bode p...

Q. Sketch the idealized (asymptotic) Bode plot for the transfer function Find the angular frequency at which H(ω) is 0dB and the angular frequency at which θ(ω) = -60°.

Find a minimum two level, Find a minimum two level, multiple-output AND-OR ...

Find a minimum two level, multiple-output AND-OR gate circuit to realize these functions (eight gates minimum). F 1 (a,b,c,d) =Σm(10,11,12,15) +D (4,8,14) F 2 (a,b,c,d) =Σm(4

Aerodynamic principles & aircraft design, Define the aircraft axes & degree...

Define the aircraft axes & degrees of freedom. Analyse the different maneuvers that can be done by an aircraft.

What do you mean by nibble, Q. What do you mean by Nibble? The nibble i...

Q. What do you mean by Nibble? The nibble is a collection of bits on a 4-bit boundary. It would not be a particularly interesting data structure except for two items BCD (binar

Explain synchronisation and parallel operation, Explain Synchronisation and...

Explain Synchronisation and Parallel Operation Generation, transmission and distribution of electric power have to be conducted in an efficient and reliable way at a reasonable

ELECTRIC DRIVES, BLOCK DIAGRAM OF DIGITAL CONTROL OF ELECTRIC DRIVES

BLOCK DIAGRAM OF DIGITAL CONTROL OF ELECTRIC DRIVES

Determine the electromagnetic force on the plunger, Q. Consider the electro...

Q. Consider the electromagnetic plunger shown in Figure. The λ-i relationship for the normal working range is experimentally found to be λ = Ki 2/3 /(x+t), where K is a constant. D

Discuss the term d/a conversion, Discuss the term D/A conversion. D/A...

Discuss the term D/A conversion. D/A conversion: Digital-to-analog or analog-to-digital conversions are two very significant aspects of digital data processing.  Digital-to-

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd