PROBLEM 6Calculate the distribution factor of a 10 pole, three phase alternator having 90 slots.ANSWER:PROBLEM 7A 14 pole three phase alternater has 336calculate the number of coils per phase.ANSWER:the winding used is half-coilPROBLEM 8An alternator has 12 poles and operated at a speed of 1610 rpm. Calculate the frequency of the generated emf.

Both the parts has been solved as follows

PROBLEM 6 Calculate the distribution factor of a 10 pole, three phase alternator having 90 slots. ANSWER: PROBLEM 7 A 14 pole three phase alternater has 336 sl calculate the number of coils per phase. ANSWER: the winding used is half-coil PROBLEM 8 An alternator has 12 poles and operated at a speed of 1610 rpm. Calculate the frequency of the generated emf.

PROBLEM 6 Calculate the distribution factor of a 10 pole, three phase alternator having 90 slots. ANSWER: PROBLEM 7 A 14 pole three phase alternater has 336 sl calculate the number of coils per phase. ANSWER: the winding used is half-coil PROBLEM 8 An alternator has 12 poles and operated at a speed of 1610 rpm. Calculate the frequency of the generated emf.

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

Chapter2: Fundamentals

Section: Chapter Questions

Problem 2.28MCQ: The total instantaneous power delivered by a three-phase generator under balanced operating...

See similar textbooks

Similar questions

Solve the following question 1.A 3-phase, 16-pole alternator has a star-connected single-layer armature winding with 144 slots, 10 conductors per slot and runs at 375 rpm. The flux is 50 mWb per pole and the distribution factor is 0.96. Calculate the line value of the induced emf. a. 4,430Vb. 8,859Vc. 2,558Vd. 5,316V
A 500 KVA, 1100 V, star connected alternator has an effective armature resistance of 0.2 Ω per phase. A field current of 40 A induces 500 V on open circuit and a current of 250 A flows on short circuit. Then find (i) synchronous impedance per phase and (ii) synchronous reactance per phase.
1. Find the no-load phase and line voltage of a star-connected, 4-pole alternator having flux per pole of 0.11 Wb sinusoidally distributed: 4 slots per phase per pole, 4 turns per slots, double layer winding with a chording angle of 16.
12 KVA, 440V. The pole winding resistance of 60HZ, 4-pole Y-connected synchronous generator is 4 ohms, armature is 0.02 + j1.2ohm / phase. When the alternator is operating at full load, the power factor is 0.8 forward and the excited current is 3A. As food losses are 800w, in these conditions: d) Draw the phasor diagram.
A 4 pole, three-phase, star-connected alternator has an armature with 120 slots and 4 conductors per slot. It revolves at 1100 rpm. The flux per pole being 0.06 weber. Calculate Frequency of generation, Number of turns, and the emf generated if the winding factor is 0.92 and all the conductors in each phase are in series. Frequency of generationAnswer for part 1 One possible correct answer is: 36.666666666667 Number of turnsAnswer for part 2 One possible correct answer is: 80 Generated voltageAnswer for part 3 One possible correct answer is: 718.9248 I want the calculation step by step
A 3-phase, delta-connected alternator is rated at 1600 KVA, 13500 V. the armature effective resistance and synchronous reactance are 1.5 ohms and 30 ohms respectively per phase. Calculate the percentage voltage regulation for a load of 1280 KW at power factor of (a) 0.8 lagging; (b) 0.87 leading
A 6.6 kV, 6 MVA, Y-connected, 3φ alternator has an effective ac resistance of 0.436Ω between terminals. The field current of 103A produces an open circuit emf of 6600V between terminals. The field current required to produce rated full-load current at short-circuit condition is 82A. What is the synchronous impedance per phase?
4. A 3-phase 50 Hz star connected alternator has 180 conductors per phase and flux per pole is 0.0543 Wb. Find i) e.m.f generated per phase and ii) e.m.f between line terminals. Assume the winding to be full pitched and distribution factor to be 0.96.
A 400 v, 50 Hz, three phase alternators, rated at 75 kVA, is star connected and driven at 1000 r/min. The windings of the alternator have a resistance, per phase, of 0.03 Ω and synchronous reactance, at 50 Hz per phase, of j0.325 Ω. The stator of the alternator has 108 slots, with 8 conductors, per slots, in a double layer. The maximum pole flux is 8.772 x 10-3 Wb. To improve the wave form only 80% of the pole pitch is wound. Determine the smallest lagging power factor at which the alternator can deliver its rated load
A 60kVA, 220V, 50Hz, single phase alternator has effective armature resistance of 0.016 ohm and an armature leakage reactance of 0.07 ohm. Compute the voltage induced when the alternator is delivering at a load power factor of (a) unity; a. 225.2V b. 252.2V c. 522.2V d. 222.5V
The impedance of the stator winding of a 440 V, star-connected, three-phase inductio nmotor is (0,2 + j0,8) Ω per phase and that of the rotor is (0,06 + j0,25) Ω per phase atstandstill. The turns ratio is 2. Using the approximate equivalent circuit, calculate therotor current and the power factor when the slip is reduced to 25% by injecting16,2 V/phase into the rotor circuit without any phase compensation.
A three phase star connected alternator of 1000 KVA, and 4600 volts, has an armature resistance of 2 ohms per phase and an armature synchronous reactance of 20 ohms per phase. Find the voltage generated at full load per phase if : a) Supplies power to a purely resistive load b) If you feed a load with inductive power factor of 0.85 c) If you feed a load with a capacitive power factor of 0.75 d) If you feed a load with capacitive power factor 0.4