Interested to Buy Any Domain ? << Click Here >> for more details...
Why ct secondary is not kept open while primary charged. Answer in terms of ct parameters.
- 4 Answers
- 6532 Views
- Power Grid, I also Faced
- E-Mail Answers
Answer Posted / gautam
if we open circuit the secondary terminal current across this terminal falls to zero. as VI is constant for a Xmer voltage across secondary side increase drasticly,which results electrical breakdown across secondary.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
is there any role of power factor with frequency variation? and how we can manage the frequency variation?
1. A 380 / 220 V r.m.s. 3-phase 4-wire circuit carries loads of 8 + j8.1 ohm; 4 + j4.1 ohm; and 2 +j2.1 ohmin the three phases respectively. The length of the circuit is 100 m, and the resistivity of the phase conductors is 0.0005 Ω/m. The neutral conductor is of the same size as the phase conductors. a) Select a reference angle 0for the first phase. Then write down the three phase voltages in both polar format and complex number format. b) Make appropriate assumptions, and take temperature effects on resistance is insignificant. Calculate the currents in the three phases. (Note: Determine conductor resistance, and apply Kirchhoff’s Voltage Law) Based on the result, suggest a main switch rating for the circuit. c) Show your preferred direction of neutral current in a diagram, and then determine its value. (Note: Apply superposition principle, and Kirchhoff’s Current Law) Use its magnitude to show that in this circuit, the unbalanced load may increase the voltage drop in some of the phases. (Note: Also observe the common volt drip in neutral) State your assumptions, if there are any. d) Suddenly the neutral wire of the circuit is broken. Estimate the new currents in the first phase, i.e. Phase L1. State your assumptions, if there are any.
Currently what is the highest capacity (MVA) of SPPg generator available in the market?
Whether amorphous core transformer is available in India?.If available then up to what rating of voltage and KVA?.
what is the difference b/w pvc cu conductor and cu breaded wire..?
in the case of 6.6kv motor starter combination contain fuses on it VCB. but in 11KV motor starter combination Fuses are not using in it's VCB why?
how give earthing conection to household equipment?
How to resolve if Diesel generator stop while running ?
1- What is the Polarization Index number be good for 15KV 3c#500MCM electrical cable? 2- Can I use the IEEE Std 43-2000 to perfom the PI test? Thanks
Explain Random and Deterministic signals?
What is the difference between grid and off- grid system??
How to do cable sizing calculation for 750 A Neutral Earthing resistor for 33kv. the 33kv cable going to swbd. is 630mm2 3 runs.
is there any phase difference occurs while primary and secondary side mutual induction occurs?
How to select a transformer group to connect a 0,433 KV generation with 33 KV grid in bi directional flow of current
What is DTR erection?
