0 A 250 KVA, 440-volt, three-phase load is to be supplied from a 2,300 volt, three-phase line. Specify the transformers required for: (a) wye-delta connection, and, (b) wye wye connection. Ans. ,325:44 hat 0 v , 83.3 KVA; 1,325:254.04; 83.3 KVA

0 A 250 KVA, 440-volt, three-phase load is to be supplied from a 2,300 volt, three-phase line. Specify the transformers required for: (a) wye-delta connection, and, (b) wye wye connection. Ans. ,325:44 hat 0 v , 83.3 KVA; 1,325:254.04; 83.3 KVA

Electricity for Refrigeration, Heating, and Air Conditioning (MindTap Course List)

10th Edition

ISBN:9781337399128

Author:Russell E. Smith

Publisher:Russell E. Smith

Chapter7: Alternating Current, Power Distribution, And Voltage Systems

Section: Chapter Questions

Problem 23RQ

See similar textbooks

Related questions

Q: series R - L - C - circuit consists of a 25 ohms resistor , a 0.221 henry inductor, and a 66.3…

A: The resistance opposes the flow of current. The value of current is same in series element . The…

Q: Q for a Hartley oscillator circuit find the value of the tank circuit (feedback circuit) components…

Q: SOLVE THE FOLLOWING PROBLEMS: A 3-phase, star-connected alternator generates 6,360 V per phase and…

Q: Determine the DC levels for the voltages and currents of the given amplifier. (IB1, VB2, IE2, VC2,…

A: The required parameters can be calculated by using DC analysis of the cascade amplifier.

Q: Q7: Plot the output Vo() of the following circuit. where Vcc=+_15V. 15V + 10sin(0) Vo (0) -15V CH2…

Q: Example14/ λλ 3λ Sketch |Ed and Id| for d=0, '8'4 Zg=Zo www Zo S.C Use the following laws and the…

Q: 2/222 Under the action of force P, the constant accelera tion of block B is 3 m/s2 to the right. At…

A: Given data is Acceleration of block B =3m/s2 Velocity of block B =2m/s Free body diagram is

Q: Solve for IE, VC, VCE

A: In the above given question we need to calculate the value of IE, VC & VCE. All these current…

Q: The electric field at a distance of 100 cm from an isolated point particle with a charge of 4x109 C…

A: Given: Charge, q=4×10-9 C Distance, r=100 cm

Q: A typical power system network with two generators G₁ and G2 supplies power to an aggregate motor…

Q: What are the properties of a circle Jfet in the subject of field effect transistor

A: Definition:- One of the most basic varieties of the field-effect transistor is the JFET or Junction…

Q: Determine V, for the following network using a. Superposition theorem b. Norton's theorem 4 Ω W 12 V…

A: given here a circuit and asked to find VX by using superposition and norton theorem.

Q: iscuss about the overall architecture and structure of a Distributed Control System. Inlcude…

A: DCS is a computerized control system for a process or plant that comprises of a large number of…

Q: Half wave rectifier and full wave rectifier circuit, what is the relationship between the input…

A: Two circuit diagrams are given int he question, that are showing 1 half wave and 1 full wave…

Q: a. Determine the closed-loop characteristic polynomial for the model shown in Fig. 3. b. Generate…

A: The required parameters can be calculated by using block diagram reduction techniques and the Routh…

Q: Q2: find Vout for the following OP-AMP circuit: 100 ΚΩ 10 ΚΩ 3 v ow 6 v 7 v 8 ΚΩ 4 ΚΩ om W A O Vout

A: We need to find out the output voltage for given circuit

Q: Example13/ Find |Ed| at d=0, λλ 3λ λ 5λ 6λ σλ '8'4' 8 8 8 8 KR=1L 0° Draw standing wave pattern…

Q: V=4V 330 ΚΩ 918 V 2.2 ΚΩ He t Vc Vc β OVE § 1,2 ΚΩ

A: We need to find out the current and voltage for given circuit

Q: 2.12 the circuit of Fig. 2.76, obtain U₁, U2, and V3. 15 V 25 V 13 20 V 10 V + VI

A: We need to find out the unknown voltage for given circuit

Q: *14. For the circuit of Fig. 19.51: a. Find the total number of watts, volt-amperes reactive, and…

Q: Example13/ Find |Ed| at d=0, λλ 3λ λ 5λ 6λ σλ '8'4' 8 8 8 8 KR=1L 0° Draw standing wave pattern…

Q: For this network, find the value of E and R₂ IT =9A E R₁ 592 180W P₁ R₂ ww

Q: 6.11. In the two-bus system shown in Figure 6.24, bus 1 is a slack bus with V₁ = 1.040° pu. A load…

Q: A series circuit composed of a 100 ohms resistor and a 20 microfarad capacitor connected across…

A: This question belongs to circuit theory . It is based on the concept of voltage calculation across…

Q: so how many vots of the battery will decrease per hour?

A: The solution is provided in the following section.

Q: 5. Differential Ampl VBE :0.7V b=50 Re

A: According to guidelines, only the first 3 subparts will be solved. For any other part please post a…

Q: 40 Ohms 60 Ohms 40 Ohms 230 V What is the Voltdrop across the 600 resistor? a. 230 V . b. 172.5 V c.…

Q: Calculate the value of VDS.

Q: 8 Mecha Using the following combinational logic, determine the output logic. Note! Only the clear…

Q: A copper wire has a temperature coef of resistivity of 0.0054 degree c-1.Whe placed in a water bath…

A: In this question we will find resistance of copper wire at given temperature.....

Q: In Complement Law A+ A' = 1 Accordingly, which of the statement is another example to Complement…

A: Given, In Complement Law A+A'=1

Q: 1. Given that H = 20p²a A/m, find the total current in the region p = 1,0 < p <2m, z = 0.

A: given H→ = 20 ρ2 aφ A/mregion given is ρ = 1 , 0<φ<2π , z = 0. here we have to find the total…

Q: 5. Calculate the total impedance of the circuits in Fig. Express your answer in rectangular and…

Q: (b) i. The power taken by an inductive circuit when connected to a 200 V, 50 Hz supply is 500 W and…

A: Given: The power taken by an inductive circuit when connected to a 200 V, 50 Hz supply is 500 W and…

Q: What is the output voltage Vo for the circuit shown below? Si A B 18.6 V 17.9 V 6.6 V (D) 5.4 V What…

A: Introduction Forward voltage drop of silicon diode is VD(on) = 0.7 V

Q: Your employer has asked you to fix a heating device which is not working as effectively as it…

Q: ruction: Show complete solution. Use at least two decimal places. Express your answer in ineering…

Q: A 3Ø induction motor has a 4-pole, Y-connected stator winding. The motor runs on a 50Hz supply with…

Q: ) Describe, with the help of sketches, the definition and meaning of noise margins in an inverter…

A: The noise margin is the proportion of noises that a logic circuit can hold out against. Noise margin…

Q: 7.16 In the system shown in Figure 7.16, a three-phase short circuit occurs at point F operating at…

A: In this question we need to find a three phase fault at fault location F shown in the given system.

Q: In Industry, three Inductive loads each of resistance R = 28 ohms and inductance L = 0.07 H are…

A: As per the honor code I will do only first three parts of the question. Kindly repost the other…

Q: Example (page 181) 1 (2 cos 0 a, + sin 0 a.) A/m², calculate the current passing through If J = (a)…

A: Given data, J = 1r3(2Cosθ ar+Sinθ aθ) A/m2I = ∫J. dS , Where, dS =r2Sinθ dϕdθ ar in this…

Q: Q3 (a) (i) (ii) With the aid of a suitable sketch and in your own words, outline the basic…

A: Solution of question Q3.(a)(i): It is asked to discuss the basic characteristics of a strain gauge.…

Q: how hydropower water turbine energy refinement is essential in dry season

A: The Given is related to fluid mechanics and hydraulic machinery.

Q: 1- You can find a band pass filter's center frequency with an oscilloscopé by increasing the input…

A: Brief description: For the above given questions we need to justify correct answers with the proper…

Q: Assume that A = 50ρ2 az Wb/m in a certain region of free space. (a) Find H and B. (b) Find J. (c)…

Q: Find the input impedance (Zin) and VSWR of the transmission line as shown in fig 75 92 (Antenna)…

A: Given transmission line,

Q: Transmission parameters=?

A: The transmission parameter can be calculated by open circuit output side and short circuit the…

Q: The magnetic field present in vacuum is given as B= -3ax + 4ay -6az T. Determine the amount of flux…

Concept explainers

Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.

Question

0 A 250 KVA, 440-volt, three-phase load is to be supplied from a 2,300 volt, three-phase line. Specify the transformers required for: (a) wye-delta connection, and, (b) wye wye connection.

Ans. ,325:44 hat 0 v , 83.3 KVA; 1,325:254.04; 83.3 KVA

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

5.In three-phase transformers, the high voltage star connection is preferred. This is so because in this case A) The voltage on the star windings is lower than if they were in delta and this reduces manufacturing costs. B) The voltage on the star windings is higher than if they were in delta and this reduces manufacturing costs. C) The voltage on the star windings would be the line-to-line voltage of the system since it is a three-phase manufacturing transformer. D) THERE IS NO SOLUTION
An electrical lineman is connecting three single-phase transformers in a Y(primary)-Y(secondary) configuration, for power service to a business. Draw the connecting wires necessary between the transformer windings, and between the transformer terminals and the lines: Note: fuses have been omitted from this illustration, for simplicity.
a.) How the improvement of the power factor decreases the line losses in the AC distribution system and increases the capacity of power transfer in the existing distribution system. Explain with the help of the figure. b.) What is the effect of power factor improvement on the DC distribution system? Draw a basic architecture of the AC and DC distribution system.
If the turn ratio of a step-down transformer is 10:1 and the series impedance (referred to the primary) of j50 ohm. If the no-load primary voltage is 230 kV (line-to-line), the secondary side is serving a Y-connected balance load of 1.5+ j0.25 ohms, the reactive power (per phase) absorbed by the load would be?
The following data were obtained from a short-circuit test performed upon a 50 kVA, 2300/115 V, 60 Hz transformer: Esc = 87 V, Isc = 21.75 A, Psc = 590 W. Calculate (a) equivalent resistance, reactance and impedance referred to the primary, and (b) voltage regulation at a power factor of 0.866 lagging. Subject: Electrical Apparatus and Devices
Two 7970-V:230-V single-phase transformers with impedance with respect to their secondaries of 1.5 + j3 and 2 + j4.5 ohms are connected in parallel to a 7900-V source. Their secondaries are supplying a common load of 30 + j40 ohms. What is the magnitude of the voltage across the load in volts? (2 decimal places)
a 100 kva, 1100/220 v, 50 hz, single-phase transformer has a leakage impedance of (0.1 +0.40) ohm for the h.v. winding and (0.006 + 0.015) ohm for the l.v. winding. find the equivalent winding resistance, reactance and impedance referred to the h.v. and l.v. sides.
5. The S.C. test on a 1-phase transformer, with the primary winding short-circuited and 30 V applied tothe secondary gave a wattmeter reading of 60 W and secondary current of 10 A. If the normal appliedprimary voltage is 200, the transformation ratio 1 :2 and the full-load secondary current 10 A, calculatethe secondary terminal p.d. at full-load current for (a) unity power factor (b) power factor 0.8 lagging. Ifany approximations are made, they must be explained.
Two single-phase transformers whose phase electrical equivalent circuits are given below are connected in parallel and ZL= 0.8+j0.6 ohm is feeding a worth of load. Idle operating voltage of Transformer 1 is 220 V and Transformer 2 idle operating voltage is 240V. a.) Find the currents flowing from transformers to the load. b.) Find the active powers that transformers transfer to the load.
What is the nominal transformation ratio of a three-phase Dyn7 transformer consisting of a bank of 110/220 V single-phase transformers? Justify your answer. In addition, sketch how the windings of these transformers can be connected.
Q22) Consider a 3-phase, 33 kV transformers with N1:N2 = 900:150. Calculate the secondary line voltage on no load condition the windings are connected in the following configurations i) Star-Delta. ii) Delta-Delta.
A100KVA, 6.6KV/300V, 50hz, the 1-phase transformer had the following figures in the short circuit test done on the HV side: 10A, 436 W at 100V. Calculate the voltage to be applied to the HV side on full load at pf 0.8 lagging when the secondary terminal voltage is 330 V.