Q.4/A/ Fill in The Blanks: 1- A salient pole synchronous motor is running at no load. Its field current is switched off. The motor will.......... 2- The current from the stator of an alternator is taken out to the external load circuit through.......... 3- An alternator is delivering rated current at rated voltage and 0.8 power-factor lagging case. If it is required to deliver rated current at rated voltage and 0.8 power-factor leading, the required excitation will be. *******

Q.4/A/ Fill in The Blanks: 1- A salient pole synchronous motor is running at no load. Its field current is switched off. The motor will.......... 2- The current from the stator of an alternator is taken out to the external load circuit through.......... 3- An alternator is delivering rated current at rated voltage and 0.8 power-factor lagging case. If it is required to deliver rated current at rated voltage and 0.8 power-factor leading, the required excitation will be. *******

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

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Similar questions

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1. i)What are the different ways to supply DC power to rotor of an alternator? Which method is superior and why? ii)How do you define ‘static stability limit’ of an alternator?
1. The magnitude of various voltage drops that occur in an altemator, depends on...... load current 2. The power factor of an alternator depends on........load 3. The most suitable kind of rotor for turbo alternators which are designed to run at high speed is. 4. The frequency of voltage generated in an alternator depends on...
(12) An alternator which is operating in parallel with other alternators at rated terminal voltage has an armature resistance of 0.015 pu and synchronous reactance of 0.35 pu. It delivers a power output in kW equal to 0.8 of its rated kVA and the voltage regulation is equal to 15%. The power factor at which the machine is operating approximately equal to .........
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