Calculate the flux per pole required on full-load for a 50 kW, 400 V, 8-pole, 600 r.p.m. d.c. shuntgenerator with 256 conductors arranged in a lap-connected winding. The armature winding resistances is 0.1Q, the shunt field resistance is 200 Q and there is a brush contact voltage drop of 1 V at each brush on full-[0.162 Wb]5.load.Calculate the flux in a 4-pole dynamo with 722 armature conductors generating 500 V when runningat 1000 r.p.m. when the armature is (a) lap connected (b) wave connected.[(a) 41.56 mWb (b) 20.78 mWb] (City & Guilds, London)7.A 4-pole machine running at 1500 r.p.m. has an armature with 90 slots and 6 conductorsperslot.The flux per pole is 10 mWb. Determine the terminal e.m.f. as d.c. Generator if the coils are lap-connected.If the current per conductor is 100 A, determine the electrical power.[810 V, 324 kW] (London Univ.)8.An 8-pole lap-wound d.c. generator has 120 slots having 4 conductors per slot. If each conductorcan carry 250 A and if flux/pole is 0.05 Wb, calculate the speed of the generator for giving 240 V on opencircuit. If the voltage drops to 220 V on full load, find the rated output of the machine.[600 V, 440 kW]

In this question we will find flux in dc generator... Note:- as peer our guidelines , I will answer…

Answered: Calculate the flux per pole required on…

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

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.4P

See similar textbooks

Similar questions

A thicker wire is used in the DC series field winding than DC shunt field winding in DC machines. * O because it carries the load current. O to prevent mechanical vibrations. O to provide strength. O to produce large flux. The speed of a DC motor can be changed by varying - armature resistance circuit O flux per pole O voltage source O all of above
help me in these questions pls write the questions with the and by (Computer) 1-Which of the following statements INCORRECTLY explain the label in the figure about LVDT working principles? a. Secondary coils are connected in series in such a way that their output is opposing each other. b. Constant DC voltage input to primary coil. c. Displacement moves ferrous rod from central position. d. The difference of the output voltage between the two secondary voltage.==========2- Explain the working principle of the measurement system in the figure below.i. Force input that is supplied to the sensor is processed to give the response in the form of raw output signal.ii. Signal conditioner manipulated the weak signal to give a conditioned input.iii. Analog or digital indicator display the unit that gives output reading of quantity being measured.iv. Measured value is compared with the input value for further action. a. ii, iii and iv only. b. i, ii and iv only. c. i, ii and…
14/. The purpose of brushes in a dc machine is__________. to change ac to dc signal to remove the losses in machine to collect voltage from windings avoid spark for current
The mass of the stator core laminations is approximately 465 kg. The specific loss in the laminations at 1.5T and 50 Hz is 3.5 W/kg. The hot stator winding resistance is 5 mn. (a) Estimate the stator core loss. Assume the maximum lamination flux density is 1.65 T.
State the Method of connection of different field coils. ( In DC Machines )
A three-phase, 4-pole, 1,500 rpm alternating having a double layer-windings with 18 turns per coil. The slots per pole per phase are 10 and the coil span is 22 slots. The spread phase is 60 degrees and the flux per pole is 0.0625 Weber. If the armature windings are wye connected. a) Determine the generated voltage per phase and the line to line voltages. b) If the alternator is delivering a three - phase load of 1,200KW at 0.8 lagging power factor what is the line current of the alternator
Construct a Coil Winding (Armature winding) detailed, with these following descriptions.... 4 poles, 26 conductors, double layer, simplex WAVE winding
h) Explain the methods of voltage control used in AC-AC converters.
The .. of the hysteresis loop is a measure of energy ..... lost per cycle a) area. b) Type. c) Frequency d) No one of the above. Fringing effect is a phenomena occurs in . a) Transformers. b) Electrical field. c) Air gap d) All of the above.
A 220 V , 60 Hz , supply is connected to 200 – turn armature winding of reluctance 1.7x105 At / Wb . Find : 1-the magnetizing reactance. 2-the rms values of the ( magneto – motive force , exciting and armature currents , magnetic flux.) 3-the inductance. 4-Draw the phasor diagram of the circuit.
What is use of solenoid coil in the pressure to converter? a. To produce magnetic field in the LVDT b. To change the LVDT output c. To bring back the pivoted beam normal position d. To produce linear displacement in bellows
Draw dc load line :

SEE MORE QUESTIONS

Recommended textbooks for you

Power System Analysis and Design (MindTap Course …

Electrical Engineering

ISBN:

9781305632134

Author:

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

Publisher:

Cengage Learning