A 10kW, 120V-DC series generator has an armature resistance of 0.1 ohms and a series field resistance of 0.05 ohms. Assuming that it is delivering rated current at rated speed, find the a) armature current and b) induced emf. (Write only the value without the unit) la = Blank 1 A Ea = Blank 2 V (Round-off to 2 decimal places)

A 10kW, 120V-DC series generator has an armature resistance of 0.1 ohms and a series field resistance of 0.05 ohms. Assuming that it is delivering rated current at rated speed, find the a) armature current and b) induced emf. (Write only the value without the unit) la = Blank 1 A Ea = Blank 2 V (Round-off to 2 decimal places)

Electrical Transformers and Rotating Machines

4th Edition

ISBN:9781305494817

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter7: Three-phase Circuits

Section: Chapter Questions

Problem 9RQ: An alternator with a line voltage of 2400 V supplies a delta-connected load. The line current...

See similar textbooks

Similar questions

A long-shunt compound-wound generator gives 240 volts at F.L. output of 100A. The resistances of various windings of the machine are : armature (including brush contact) 0.1 Q, series field 0.02 Q, inter pole field 0.025 2, shunt field (including regulating 0.2 resistance) 100 2. The iron loss at F.L. is 1000 W; windage and friction losses total 500 W. Calculate F.L. efficiency of the machine.
A 4-pole shunt generator with wave-wound armature has 41 slots, each having 12 conductors. The armature resistance is 0.05 ohms and shunt field resistance s 200 ohms. The flux per pole is 25 mWb, if a load resistance of 10 ohms is connected across the armature terminals, calculate the voltage across the load when generator is driven at 1000 rpm
18/. In a dc machine design, if a wave winding with 8 poles is used, then the parallel path C must be equal to ______. 8 4 2 1
A three-phase transformer connection has a delta-connected primary and a wye-connected secondary. The center tap of the wye is used as a neutral conductor. If the line-to-line voltage is 480 volts, what is the voltage between any one phase conductor and the neutral conductor?
Two transformers rated at 100 kVA each are connected in an open-delta connection. What is the total output power that can be supplied by this bank?
An alternator with a line voltage of 2400 V supplies a delta-connected load. The line current supplied to the load is 40 A. Assuming the load is a balanced three-phase load, what is the impedance of each phase?
An inductor has an inductance of 0.025 H and a wire resistance of 3 Ω. How long will it take the current to reach its full Ohm’s law value?
A three-phase transformer bank has the secondary connected in a wye configuration. The center tap is used as a neutral conductor. If the voltage across any phase conductor and neutral is 120 volts, how much voltage would be applied to a three-phase load connected to the secondary of this transformer bank?
An AC power source is connected across 325 turns of an autotransformer, and the load is connected across 260 turns. What is the turns ratio of this transformer?
To what is the voltage regulation of a DC generator proportional?
Three Identical capacitors are connected in star to 430 Volts, F = 50 Hz, 3 phase supply. If the line current is 16 A. Calculate its reactance and capacitance value. Reactance Xc is? The capacitance of each capacitor, C?
The collector leakage current in a transistor is 300 μA in CE arrangement. If now the transistor is connected in CB arrangement, what will be the leakage current? Assume β = 120. (2) For a certain transistor, IB = 20 μA; IC = 2 mA and β = 80. Calculate ICBO. (3) In a transistor, IB = 68 μA, IE = 30 mA and β = 440. Determine α rating of the transistor. Then determine the value of IC using both the α rating and β rating of the transistor.