Answer Posted / ashoka k sahoo
In a layman language transformer is a static device which
steps up and steps down voltage level at a constant
frequency.
| Is This Answer Correct ? | 0 Yes | 1 No |
Post New Answer View All Answers
HOW TO CALLICULATE RESITENCE,REACTANCE AND IMPEDENCE VOLTGE OF TRANSFORMER 13.33 KVA 144/240 VOLTS 93/56 A WITH FORMULA
Why armature rheostat is kept in maximum position?
how indusrial diesel generator work
can we use CBCT in neutral of solidly grounded transformer? in place of three phases we can pass only one phase which decreases the size of CBCT?
distribution is maximum done by a)radial b)network c) parallel d)b & c
what is the necessity of under ground cables ??
can a 150 kva 3 phase 440v/230V delta-wye step down transformer can be use as step up transfoermer with connected loads at 440v side?
what is under coal gassification?
how can i use REF and diffrencial relay both in 1 CT core for transformer protection?
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.
What is tan delta & PPM in transformer? and whats its IS value?
how can we change the polarity of Alternating current rapidly? how frequency of ac can be controlled and changed easily?
What is electrical cable termination
Please brief working principle & construction of permanent magnet AC Servo motor
what is the difference between dry and wet type of 132kV terminations. which one is durable