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Question 1 Assume the transformer to be ideal. Winding 1 is applied a sinusoidal voltage in...
Ideal, single-phase two-winding transformer A single-phase two-winding transformer is rated 20 kVA, 480/120 V, 60 Hz...
Ideal, single-phase two-winding transformer A single-phase two-winding transformer is rated 20 kVA, 480/120 V, 60 Hz A source connected to the 480-V winding supplies an impedance load con- nected to the 120-V winding. The load absorbs 15 kVA at 0.8 p.f. lagging Ideal, single-phase two-winding transformer A single-phase two-winding transformer is rated 20 kVA, 480/120 V, 60 Hz A source connected to the 480-V winding supplies an impedance load con- nected to the 120-V winding. The load absorbs 15 kVA...
Problem E1.2.6 (20 points) Consider the magntically coupled circuit that involves an ideal transformer as depicted...
Problem E1.2.6 (20 points) Consider the magntically coupled circuit that involves an ideal transformer as depicted in Figure E1.2.6. The sinusoidal voltage source frequency is 20 x 103 (rad/sec). The load connected to the secondary winding (RHS of the ideal transformer) consists of a variable resistor R in series with a variable capacitor C. (a) Find the values of R and C for maximum power transfer from the voltage source in the primary winding. (b) What is the maximum average...
12. A sinusoidal voltage Δv = (75.0 V)sin(120t) is applied to a series RLC circuit with...
12. A sinusoidal voltage Δv = (75.0 V)sin(120t) is applied to a series RLC circuit with L = 20.0 mH, C = 130.0 μF, and R = 32.0 Ω. (a) What is the impedance of the circuit? Ω (b) What is the maximum current in the circuit? A 11.An AC power source has an rms voltage of 120 V and operates at a frequency of 60.0 Hz. If a purely inductive circuit is made from the power source and a...
681) Given a sinusoidal voltage source in series with R,L, and C. The sinusoidal frequency is...
681) Given a sinusoidal voltage source in series with R,L, and C. The sinusoidal frequency is 400 Hz. R=7 Ohms, L=4 milliHenry, C=100 microFarad, V=60sin(wt) volts. Determine the phasor current, phasor voltages across the capacitor, resistor, and inductor
Q-1 A 60Hz, 480V/240V,960V A transformer is supplying a 960W passive load at 240V. The resistances...
Q-1 A 60Hz, 480V/240V,960V A transformer is supplying a 960W passive load at 240V. The resistances of the primary side and secondary side of the transformer are 1.092 and 0.252 respectively. If the no load losses of the transfomer is given by P-Vã 4800 W where Vn is the input voltage of the transformer in Volt. Answer the following: a) Calculate transformer efficiency b) Do you allow this transformer to be connected to 240V 50Hz distribution system? Explain. c What...
A 380 Hz sinusoidal voltage with a maximum amplitude of 120 V at t = 0 is applied across the terminals of an inductor.
A 380 Hz sinusoidal voltage with a maximum amplitude of 120 V at t = 0 is applied across the terminals of an inductor. The maximum amplitude of the steady-state current in the inductor is 20 A. Part A What is the frequency of the inductor current? Part B If the phase angle of the voltage is zero, what is the phase angle of the current? Part C What is the inductive reactance of the inductor? Part D What is the inductance of the inductor? Part E What is the...
1. A step-down transformer is used for recharging the batteries of portable devices. The turns ratio...
1. A step-down transformer is used for recharging the batteries of portable devices. The turns ratio N2/N1 for a particular transformer used in a CD player is 3:43. When used with 120-V (rms) household service, the transformer draws an rms current of 170 mA. (a) Find the rms output voltage of the transformer. ? V (b) Find the power delivered to the CD player. ? W 2.What velocity would a proton need to circle Earth 1,285 km above the magnetic...
Question # 1 - In a series R-L circuit, a voltage of 10 V at 50...
Question # 1 - In a series R-L circuit, a voltage of 10 V at 50 Hz frequency produces a current of 750 mA. In the same circuit with same magnitude of applied voltage with a frequency of 75 Hz produces a current of 500 mA. Find out the values of R and L in the circuit. Question # 2 - Derive the equations of active, reactive and apparent powers in a series R-L circuit with sinusoidal AC supply. Question...
An ideal transformer is connected as shown below. If Vs = 83 V, N1 = 7,...
An ideal transformer is connected as shown below. If Vs = 83 V, N1 = 7, N2 = 2, and R = 294 , what is the magnitude of the resistor voltage drop VR (in V)? Vs N:N Points possible: 1 Allowed attempts: 3 Retry penalty: 33.333% Submit How much current does the source supply (IA, in A)? Points possible: 1 Allowed attempts: 3 Retry penalty: 33.333% Submit An ideal transformer is connected as shown below. The circuit parameters are...
2 0. The primary coil of a transformer has N, 4 50 x 10 turns, and...
2 0. The primary coil of a transformer has N, 4 50 x 10 turns, and its secondary has Ni 1.35 x 10 tuns. If the input voltage across the primary coil is av-(1so v) sin or, voltage is developed across the secondary coil? a. 332 v b. 454 V C. 382 V d. 726 e. None of the above A sinusoidal voltage Av (95 V) sin (100) is applied to a series Z-90 mH, C-11SpF, and R- 46 2...
Ideal, single-phase two-winding transformer A single-phase two-winding transformer is rated 20 kVA, 480/120 V, 60 Hz A source connected to the 480-V winding supplies an impedance load con- nected to the 120-V winding. The load absorbs 15 kVA at 0.8 p.f. lagging Ideal, single-phase two-winding transformer A single-phase two-winding transformer is rated 20 kVA, 480/120 V, 60 Hz A source connected to the 480-V winding supplies an impedance load con- nected to the 120-V winding. The load absorbs 15 kVA...
Problem E1.2.6 (20 points) Consider the magntically coupled circuit that involves an ideal transformer as depicted in Figure E1.2.6. The sinusoidal voltage source frequency is 20 x 103 (rad/sec). The load connected to the secondary winding (RHS of the ideal transformer) consists of a variable resistor R in series with a variable capacitor C. (a) Find the values of R and C for maximum power transfer from the voltage source in the primary winding. (b) What is the maximum average...
Q-1 A 60Hz, 480V/240V,960V A transformer is supplying a 960W passive load at 240V. The resistances of the primary side and secondary side of the transformer are 1.092 and 0.252 respectively. If the no load losses of the transfomer is given by P-Vã 4800 W where Vn is the input voltage of the transformer in Volt. Answer the following: a) Calculate transformer efficiency b) Do you allow this transformer to be connected to 240V 50Hz distribution system? Explain. c What...
An ideal transformer is connected as shown below. If Vs = 83 V, N1 = 7, N2 = 2, and R = 294 , what is the magnitude of the resistor voltage drop VR (in V)? Vs N:N Points possible: 1 Allowed attempts: 3 Retry penalty: 33.333% Submit How much current does the source supply (IA, in A)? Points possible: 1 Allowed attempts: 3 Retry penalty: 33.333% Submit An ideal transformer is connected as shown below. The circuit parameters are...
2 0. The primary coil of a transformer has N, 4 50 x 10 turns, and its secondary has Ni 1.35 x 10 tuns. If the input voltage across the primary coil is av-(1so v) sin or, voltage is developed across the secondary coil? a. 332 v b. 454 V C. 382 V d. 726 e. None of the above A sinusoidal voltage Av (95 V) sin (100) is applied to a series Z-90 mH, C-11SpF, and R- 46 2...
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