A A Question 5: For the ideal transformer shown, find the following: I₁ 40 -j60 www h 1:M 120/0° V rms + + + V2 20 Ω A) The source current 11. B) The output voltage Vo. C) The complex power supplied by the source.

The primary ofa certain transformer takes 1 A at a power factor of 0.4 when connected across a 230 V, 50 Hz supply and the secondary is on open circuit. The number of turns on the primary is twice that on the secondary. A load taking 50 A at a lagging power factor of 0.8 is now connected across the secondary. Sketch, and explain briefly, the phasor diagram for this condition, neglecting voltage drops in the transformer. What is now the value of the primary current?

A 220V(rms), 50HZ sinusoidal source is connected to the primary side of an ideal transformer with 100 turns on the primary side and 300 turns on the secondary side. Primary line resistance is 22 and inductance is 10mH. Secondary line resistance is 92 and inductance is 100mH. There is a 1002 resistive load connected on the secondary side. Draw a well-labeled circuit diagram and determine: (i) Currents on both sides (ii) Load Voltage (iii) Complex power supplied by the source

An ideal transformer has 500 turns on the primary and 300 turns on the secondary. The source produces a voltage of 600V (RMS) and load Z is a pure resistance of 122. Calculate: (i) E2 (ii) Il & 12 (iii) Power delivered to the primary (W) (iv) Power output from secondary (W) 2. (v) what is the impedance seen by the source?

1) Calculate the maximum RMS current in p.u. that guarantees the equality of losses between the deformed and non-deformed regime for a power transformer equal to 400 kVA with Pcp = 6% in two cases: a) the transformer feeds a twelve-phase converter Idc=40 A b) the transformer feeds a six-phase converter Idc=40 A.

A transformer is needed that will cause an appear as 240 Vyms. actual load resista nce of 252 to 100R to an ac voltage source of ca) Dyews the diaggaam of the cuf. reguired. cb) what tuons ratio is required for the tounsforma. C) Find the currenttauen from the source the cuorent flowing through the load, and the load voltope load voltage-

One side of a transformer has What is the voltage (in V rms) at the secondary? 1,800 turns while the other side has 450 turns. The high voltage side is connected to a 240 Vrms source. The low What is the current (in A rms) at the secondary? What is the current (in A rms) out of the source? What is the value of the load impedance when referred to the primary? • Referred impedance = voltage side (secondary) is connected to an impedance ZL = 20 + j10 Q. Provide at least 4 digits after the decimal point. +j_ N What is the value of the source voltage (in V rms) when referred to the secondary?

Given Zo-j407 2, R₁143, R6317 52 and a 0.04, what is the magnitude of the source voltage Vs (in V rms) in the primary of the ideal transformer? Vs R₁ ww Answer: Zc Zc R₁ Use up to 2 digits after the decimal point if necessary in your answer below VL-28020 V TR

In a transformer that has 10 times more turns on the secondary side (side 2) than on the primary side (side 1), the magnitude of the voltage/EMF across the windings on the secondary side, E₂ will be... O a.... 10 times lower than the voltage/emf on the primary side, E₁. O b.... the same as the voltage/emf on the primary side. O c.... always zero regardless of the voltage on the primary side, E₁. O d.... 10 times higher than the voltage/emf on the primary side, E₁.

Deduce the emf equation of a transformer. Prove that the emf induced in the windings of a transformer will lag the alternating flux producing that emf.