At no load the PF of an alternator
-Zero
-Zero Lagging
-Zero leading
-None of the above
Answer Posted / shubham
At no load Synchronous Impedence of the alternator is
responsilble for creating angle difference. So it should be
zero lagging like inductor
Is This Answer Correct ? | 4 Yes | 2 No |
Post New Answer View All Answers
What is accuracy of a measurement?
how to select correct size of power cable for inverter duty motor
Refernce currents are to be generated using refernce cueernts how can this be done??
What is shutdown of electrical sub station?
1)How much current can a 3-1/2 core 100 mm wire carry? 2)What are the special cables required for explosion proof wiring? 3)In case you do not have coal and salt for earthing, how can you achieve good temporary earthing? 4)One horse power single phase motor is more likely to get hot than a one horse power 3 phase motor. Is it true or false, if true why? 5)What are the different types of soft starters for large motors?please explain?
what is meant by class 1 E in electrical power supply?
what is the working principle of energy saver control panel. please give the complete calculation & theory.
comparision between ACB and VCB
I have one ct of ratio 3000-2000/1 Amp its knee point voltage mentioned on name plate is 500-333/30mA-50mA at Vk/2. in secondary box there is three terminal named 1S1, 1S2, 1S3 then on which terminal obtained the knee point voltage ie 1S1-1S2 OR 1S1-1S3 & also specify the knee point voltage for the ratio 3000 from name plate.
how commomn gate triggering is given for TRIAC ? other thyristor wont be efffected?
In which of the following case, the rotating magnetic field is reversed? A regenerative breaking B plugging C dynamic breaking D forward motoring
What is Electrical Grade Aluminum for Tubular BusBars. i am confused between 6063 and T6 or T5 and what is BS 2898 and BS 159?
why would the rotor rotate at sub synchronous speed against the direction of rotating flux when d rotor of 3 phase IM is connected to 3 phase balanced supply and the stator windings are shortcircuited ??
how to select the automotive wire size by mathematical calculation. for xenon headlamp with ballast. the ballast given data voltage 10-17v,current permenant 6amp, run up phase is 15amp, peak at swicth on max 400micro sec is 40amp.the sum of cable resistance is 150mohm.please provide referenc document if any for relating the peak at switch on current,time & wire wire size
What is resolver and glass scale in CNC how they work?