Consider the transformer which has an output of 600MW (megawatt). The powerlines are 400kv lines. a....
Consider the transformer which has an output of 600MW
(megawatt). The powerlines are 400kv lines.
a. If the voltage of the generator is 1000v, give the specification
(ratio of turns) of the transformer needed to convert the output
for ideal transmission. Show your work (4 marks)
b. Based on your answer in (a) classify the transformer (step-up or step down) used.(2)markd
c. What is the change in current when the voltage is transformed assuming a 100% efficiency? (4marks)
Homework Answers
Add Answer to:
Consider the transformer which has an output of 600MW
(megawatt). The powerlines are 400kv lines.
a....
Consider a simple power system consisting of an ideal voltage source, an ideal step-up transformer, a...
Consider a simple power system consisting of an ideal voltage source, an ideal step-up transformer, a transmission line, and ideal step-down transformer, and a load. The voltage ofthe source is Vs-480/00V. The impedance of the transmission line is Zline-1H2 Ω, and the impedance of the load is Zload 10+j25 2 (1) Assume that the transformers are not present in the circuit. What is the power factor of the system? What is the load voltage Vi and efficiency of the system?...
1.1 (3 marks) A single-phase power system consists of a 480 volt 60 Hz generator supplying...
1.1 (3 marks) A single-phase power system consists of a 480 volt 60 Hz generator supplying a load of 4 + j 3 ohms through a transmission line whose impedance is 0.18 + j 0.24 ohm. The generator impedance may be neglected. 1.1.1 Determine the transmission loss (power loss in the transmission line resistance. (1 mark) 1.1.2 Redo the 1.1.1 when the following is done to the power system. The generated voltage is stepped up ten times by using an...
Consider a wind farm that is composed of 16 wind turbines arranged in strings of 4...
Consider a wind farm that is composed of 16 wind turbines arranged in strings of 4 wind turbines each. The voltage level of each wind turbine is 0.69 kV. The wind farm is connected to the medium voltage power system, at 60 kV. Q1: Assuming that the string voltage is 20 kV, and an ideal transformer, what is the turns ratio of the wind turbine transformer? Q2: Is the wind turbine transformer a step-down or step-up one? Why? Q3: What...
An ideal step-down transformer has a primary coil of 370 turns and a secondary coil of...
An ideal step-down transformer has a primary coil of 370 turns and a secondary coil of 22 turns. Its primary coil is plugged into an outlet with 115 V, from which it draws a current of 0.29 A. (a) What is the voltage in the secondary coil? (b) Calculate the current in the secondary coil? (c) Assuming that the transformer secondary is driving a resistive load, calculate the average power dissipated in the resistor.
An ideal step-down transformer has a primary coil of 400 turns and a secondary coil of...
An ideal step-down transformer has a primary coil of 400 turns and a secondary coil of 25 turns. Its primary coil is plugged into an outlet with 110 V(AC), from which it draws an rms current of 0.83 A. 1.)What is the voltage in the secondary coil? 2.)Calculate the rms current in the secondary coil. 3.)Assuming that the transformer secondary is driving a resistive load, calculate the average power dissipated in the resistor.
Problem 9. (0.2 pts). An ideal step-down transformer has a primary coil of 370 turns and...
Problem 9. (0.2 pts). An ideal step-down transformer has a primary coil of 370 turns and a secondary 22 turns. Its primary coil is plugged into an outlet with 115 V, from which it draws a current coil of of 0.29 A. (a) What is the voltage in the secondary coil? (b) Calculate the current in the secondary coil? (c) Assuming that the transformer secondary is driving a resistive load, calculate the average power dissipated in the resistor.
Please help with BOTH of the following questions for a thumbs up! Thanks! 8. + -/1...
Please help with BOTH of the following questions for a thumbs
up! Thanks!
8. + -/1 points SerPSE 10 32.8.OP.021. My Notes + Ask Your Teach A step-down transformer is used for recharging the batteries of portable electronic devices. The turns ratio N/N, for a particular transformer used in a DVD player is 1:14. When used with 120-V (rms) household service, the transformer draws an rms current of 33.0 mA from the house outlet. (a) Find the rms output voltage...
The following diagram shows a basic structure of energy distribution. In the thermoelectric plant, a three-phase...
The following diagram shows a basic structure of energy
distribution. In the thermoelectric plant, a three-phase generator
feeds an elevator transformer which has an output of 230kVrms in
each of its phases. The relation that is had in this transformer is
1:60. The transformer acts as a balanced three-phase source which
supplies two parallel three-phase networks represented by the
high-voltage lines. These high-voltage lines have a resistance per
line of Rw = 10Ω and are connected to a step-down transformer...
A step-down transformer is used for recharging the batteries of portable electronic devices. The turns ratio...
A step-down transformer is used for recharging the batteries of portable electronic devices. The turns ratio N2/N1 for a particular transformer used in a DVD player is 1:10. When used with 120-V (rms) household service, the transformer draws an rms current of 38.0 mA from the house outlet. (a) Find the rms output voltage (in V) of the transformer. V (b) Find the power (in W) delivered to the DVD player. W (c) What If? What would be the current...
11 12 13 14 A transformer has the voltages 25 V_pri and 140 V_sec. A current...
11 12 13 14
A transformer has the voltages 25 V_pri and 140 V_sec. A current 3.5 mA is flowing in the primary. What is the current flowing in the secondary? (Assume 100 percent efficiency.) Submit Answer Save Progress Practice Another Version A machine in the factory needs 31V to operate. The power in the factory is different from that, so a transformer is needed. If the secondary to primary turns ratio {N_sec/N_pri) of the transformer is 0.0675, What is...
Consider a simple power system consisting of an ideal voltage source, an ideal step-up transformer, a transmission line, and ideal step-down transformer, and a load. The voltage ofthe source is Vs-480/00V. The impedance of the transmission line is Zline-1H2 Ω, and the impedance of the load is Zload 10+j25 2 (1) Assume that the transformers are not present in the circuit. What is the power factor of the system? What is the load voltage Vi and efficiency of the system?...
Consider a wind farm that is composed of 16 wind turbines arranged in strings of 4 wind turbines each. The voltage level of each wind turbine is 0.69 kV. The wind farm is connected to the medium voltage power system, at 60 kV. Q1: Assuming that the string voltage is 20 kV, and an ideal transformer, what is the turns ratio of the wind turbine transformer? Q2: Is the wind turbine transformer a step-down or step-up one? Why? Q3: What...
Problem 9. (0.2 pts). An ideal step-down transformer has a primary coil of 370 turns and a secondary 22 turns. Its primary coil is plugged into an outlet with 115 V, from which it draws a current coil of of 0.29 A. (a) What is the voltage in the secondary coil? (b) Calculate the current in the secondary coil? (c) Assuming that the transformer secondary is driving a resistive load, calculate the average power dissipated in the resistor.
Please help with BOTH of the following questions for a thumbs
up! Thanks!
8. + -/1 points SerPSE 10 32.8.OP.021. My Notes + Ask Your Teach A step-down transformer is used for recharging the batteries of portable electronic devices. The turns ratio N/N, for a particular transformer used in a DVD player is 1:14. When used with 120-V (rms) household service, the transformer draws an rms current of 33.0 mA from the house outlet. (a) Find the rms output voltage...
The following diagram shows a basic structure of energy
distribution. In the thermoelectric plant, a three-phase generator
feeds an elevator transformer which has an output of 230kVrms in
each of its phases. The relation that is had in this transformer is
1:60. The transformer acts as a balanced three-phase source which
supplies two parallel three-phase networks represented by the
high-voltage lines. These high-voltage lines have a resistance per
line of Rw = 10Ω and are connected to a step-down transformer...
11 12 13 14
A transformer has the voltages 25 V_pri and 140 V_sec. A current 3.5 mA is flowing in the primary. What is the current flowing in the secondary? (Assume 100 percent efficiency.) Submit Answer Save Progress Practice Another Version A machine in the factory needs 31V to operate. The power in the factory is different from that, so a transformer is needed. If the secondary to primary turns ratio {N_sec/N_pri) of the transformer is 0.0675, What is...
Most questions answered within 3 hours.
-
convert grams into vloume with the density of water being at
.997514 g/cm^3 at 23.1 Celsuis...
asked 2 hours ago -
Foreman company obtained a $20,000, 6% loan on May 1, 2018.
Principal and interest will be...
asked 2 hours ago -
5. Problem 11.05 (Discounted Payback)
eBook
Project L costs $60,000, its expected cash inflows are $14,000
per...
asked 2 hours ago -
1. Which of the following is true about politics and health
organizations?
A. Health organizations are...
asked 2 hours ago -
A space vehicle is coasting at a constant velocity of 18.1 m/s
in the +y direction...
asked 3 hours ago -
5) Use the following balanced equation to answer questions
(a)-(i).
3 Cu(s) + 8 HNO3(aq) →...
asked 3 hours ago -
A three-year maturity bond with a 12% annual coupon rate is
currently traded at par $1000...
asked 3 hours ago -
1.
What is the minimum volume to use in the Spec 20 cuvette in order
to...
asked 4 hours ago -
A builder wants to install wall-to-wall carpeting in a living
room of length 8.87 m and...
asked 4 hours ago -
Organizational change can produce anxiety in those affected by
the change. In what ways can change...
asked 4 hours ago -
Ozone in the atmosphere may react with nitric oxide.
From the following data, calculate the DG...
asked 4 hours ago -
Steven Long, a bond analyst, is analyzing a convertible bond.
The characteristics of the bond are...
asked 4 hours ago