AC - Supply 380V $1 eeeee 0-400V Trans.1 Trans.2 Pr.l 14 Pr.2 3-Phase Auto Transformer 0-1A Sec.1 N N Sec.2 0-14 lamp Lamp Lamp 0-24 S2 S S 3-Phase resistive load
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- Question 10 Not yet answered Marked out of Previous page BE The results from the DC test of a single phase transformer are: Vdc-14v and ldc 1.5A, the DC resistance are equal to: O a. O b. OC. O d. 12.50. 8.450 9.3302. 16.250. Time left 0:26:1 hp Next page9. A single-phase transformer has a turn ratio of 6, the resistances of the primary and secondary windings are 0.9 £2 and 0.025 2 respectively and the leakage reactances of these windings are 5.4 92 and 0.15 2 respectively. Determine the voltage to be applied to the low- voltage winding to obtain a current of 100 A in the short-circuited high voltage winding. Ignore the magnetising current.In the single-phase, three- winding, transformer, the primary current is equal to lo at the condition of ints there is no load on tertiary windings the current in secondary windings equal to zero the resistances (R1, R2, and R3) in transformer windings are equal the inductances (L1, L2, and L3) in transformer windings are equal.
- With base MVA of 150 and base voltage of 33. If the reactance of the transformer is 0.23 pu. The parameter of the reactance of the transformer in the Neplan software is O 1.66 2.30 23 0.23 O Non of them13)This MCQ QUESTION FROM BASIC POWER ELECTRICAL ENGINEERING course.Find the following : 1.Ripple Voltage (vpp) 2. Zero-to peak ripple(Vop) 3.secondary winding of the transformer high line and low line
- Please provide Handwritten answer64. The effective primary and secondary resistances of a 500 kVA, 12000/2400 volt 60 cycle transformer are 1.52 and 0.049 ohms, and the corresponding leakage reactances are 6.4 and 0.26 ohms. The no-load core loss is 1700 Watts. Determine the efficiency at rated kVA load and unity pf. a. 98.72% b. 94. 23% c. 97.43% d. 96.22%A 50 Hz 1-phase transformer has a turn-ratio of 6. The resistances are 0.90 ohm and 0.03 ohm and the reactance’s 5 ohm and 0.13 Q for high voltage and low voltage respectively. Determine (a) the voltage to be applied to the high voltage side to obtain full load current of 200 A in the low voltage winding on short circuit (b) the p.f. on short circuit.
- E 16. If a 0.6 accuracy class current transformer has a phase angle ß of + 10' at 100% rated current, the ratio correction factor is A. 1.005. B. 0.989. C. 1.007. D. 0.995. bru1) Identify, which component of no load current supplies hysteresis loss, in a practical transformer? a. None of these b. IM c. IC d. I0The core of a three phase, 50 Hz, 11000/550 V delta/star, 300 kVA, core-type transformer operates with a flux of 0.05 Wb. Find (i) number of H.V. and L.V. turns per phase. (ii) e.m.f. per turn (iii) full load H.V. and L.V. phase-currents.