== v = 300 cos(1000t+90°) v The load consists of an 800 nF capacitor connected in series with a 1000 resistor. 1000 Ω w + j600 n j800 n j450 N ZLL a) Write the impedance of the load (Z) in the frequency domain. b) Redraw the above circuit and indicate the polarity of the induced voltage due to mutual inductance on each side of the transformer.

Transformers

мCQ 12 An ideal step-down transformer has 200 primary turns and 50 secondary turns. If 440 volts (rms) is = l10 Brms (A) (B) (C) D) (E) 3.6 A (rms) 7.3 A (rms) 11.4 A (rms) 15.7 A (rms) 12.4 A (rms) I=N

I need the answer at 20 minute

primary of a certain transformer takes 1 a at a power factor of 0.4 when it is connected acrossa 200-v, 50-hz supply and the secondary is on open circuit. the number of turns on the primary istwice that on the secondary. a load taking 50 a at a lagging power factor of 0.8 is now connectedacross the secondary. what is now the value of primary current ?

Please Use matrix form in solving this problem. Thank you

A single-phase 50Hz transformer has 500 turns on the primary side and 2000 turns on the secondary side. The primary side of the transformer is connected to a 110V(rms) supply that has an internal series resistance of 59. Suppose a load that consists of a series combination of 48 resistance and inductance of 16mH, is connected to the high voltage side of the transformer. Determine the supply current.

A three phase power transformer having a line voltage ratio of 400 V to 33 kV is connected in star-delta. The C.T.s on 400 V side have current ratio as 1000/5. What must be the C.T. ratio on 33 kV side. Assume current on 400 V side of transformer to be 1000 A. C.T. secondaries in delta p 5A oooo oooo 5√3 A -0000 0000 0000 0000 Star-delta transformer 0000 5√3 A vooo னள். m reeee p C.T. secondaries in star 5√3 A 0000

The efficiency of a transformer at load 0.8 p.f. Lag is -- at load 0.8 p.f. Lead * equal less than more than none of these

Consider the following transformer circuit assuming an ideal transformer. In this circuit the signal generator will provide a 10-Volt peak-to-peak sinusoidal signal at a frequency of 1.0 kHz. Assume that L₁ = 0.65 H, L2 = 0.00492 H (=4.92 mH) and that the coupling constant = 0.99925. + VG1( R1 1k N1:N2 11.5:1 12 V1 N1 N2 V2 R2 8.2 1) Find the following using the theory presented in the prelab reading: a) Start with Equations (2) of the prelab reading and show that the input impedance to an ideal transformer is given by the equation for Z1 (=V1/11) in Equations (4) of the prelab reading. Equations (2) are: V₁ = joLI₁ + jœMI₂ and V₂ = j@MI₁ +j@L₂I₂ The equation for the input impedance is: Z₁ = 1½ = jwL₁ + (WM)² jwL₂+ZL b) Assuming that Z is a real impedance, find the equations for the real and imaginary parts of Z1. c) Use your equations from part (b) to calculate the value of the input impedance (Z) at an operating frequency of 200 Hz. Assume that the load impedance is 8.2 Ohms…