what is meant by form factor and hoe related with the HT
transmission voltage
Answers were Sorted based on User's Feedback
Answer / chandrashekar g
form factor is the ratio of r.m.s value to average value of
any electrcial quantity
ff=r.m.s/ave. value
0.70vm/0.63vm=1.1 where vm=max.voltage
do u know the formula for finding emf of transformer
E=4*1.1*Øm*f*Np volts
where
1.1=form factor
Øm=Bmax*A
f=frequency
Np= no. of primary turns
so transmission depends on form factor
Is This Answer Correct ? | 14 Yes | 2 No |
Answer / harikrishna
form factor is the ratio of r.m.s value to average value of
any electrcial quantity
ff=r.m.s/ave. value
0.707vm/0.636vm=1.11 where vm=max.voltage
do u know the formula for finding emf of transformer
E=4.44*f*Øm*Np volts
where
1.11=form factor
Øm=Bmax*A
f=frequency
Np= no. of primary turns
so transmission depends on form factor
Is This Answer Correct ? | 6 Yes | 1 No |
A Generator is in running condition and Rotor earth fault alarm is coming.How to check on line(i.e in running condition) whether there is actual earth fault in rotor or not.
what is significance of B-H curve? how it differs form ordinary transformers to Amorphous Transformer?
An 11kv system consisting of an underground cable to a sub station about 300 meters away was shut down for about 10 hrs. On energising, it tripped off on earth fault about 10---20 mins later 6 times but since than it is not tripping.its already 3 weeks now. The SPAJ was found to be fine. what could be the cause.No test had been done to determine the cause of the trippings till now because of demand.
In convertor can we use rectifier thyristor in place of invertor thyristor with explain.
Why are the cores of large transformers built up of circular transactions ?
How much KVAr bank reqired for 630 KVA transformer on full load for maintain power factor upto.99
4 Answers Dhanalakshmi Industries, DLF,
where HT & LT capacitor uses ?
If we have 15000kw connected load in a factory than how much power demand sanction should be taken from electricity board. Pls provide complete calculation.
What is flow meter?
what is Harmonic effect?
Why do we have 110V, 230V, 415V etc. in electrical transmissions? Why not 100V, 200V,400V?
how capacitor buield up the voltage