If excitation will increase, then what will be the effect
on power factor? Will it decrease or increase?
Answer Posted / gulshan goyal
it depends on the machine.If it is a motor and if we
increase excutation power will shift from lagging to
leading.as we increse the excitation angle will first
decrease as in lagging side than angle will increase in
leading side and hence the power factor will initially may
be .8 lagging than .9L,.95L,1 than .95 leading ,.9Ld,.8Ld
| Is This Answer Correct ? | 7 Yes | 5 No |
Post New Answer View All Answers
Why it need to form a capcitor when it not been in use from three or two year. Plz describe it technically.
what are the advantages disadvantages of connecting high voltage block( 1:1 transformers) transformers between the turbo generators and busbars.
how we do Vector group ,magnetic balance and tap changer test in Transformer?
What is the classification of hydro projects based on installed capacity?
What is the basic principle of welding process?
Incoming line 11kv And transformer capacity is 2500kva. Consumption load is 1300A. Then fuse capacity is 11kv line.
before transformer oil dielectric strenght tests are taken the oil should be allowed to settle to remove option 1 air bubbles 2 gasses 3 contamination 4 water
How we can calculate the life of Lead acid battery
At the starting of dc motor and syn.motor and induction motor high current flowing through the winding. Due to this the windings burnt out. To avoid this different types of starters are used. But incase of transformer what Will be used (At starting no emf is induced in the primary winding)?
What are the disadvantages of hydropower?
what is difference between window type and wound type transformers?where we will use window type and wound type transformers?
why the colour of insultor stack , petticoat is brown. Is it has some technical reason.
how to select automotive wire by mathematical equation with given current, vlotage and resistance
give me applications of sequence bridges . (used in 3 phase un balanced systems)