4. A home upstate has a 10 kV power line to its outside transformer. Given thatthe home circuits include one 220 Volt connection to a device, what is theratio of turns in the transformer. i.e., what must be the turns ratio for thetransformer to power 220 volts at the home? How many amps can besupplied to all circuits of the house at one time?

Given values are - Voltage of power line is 10 Kilo Volt or 10000 Volt. Voltage of device…

Answered: 4. A home upstate has a 10 kV power…

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter29: Dc Generators

Section: Chapter Questions

Problem 1PA: You are working as an electrician in a large steel manufacturing plant, and you are in the process...

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Question Q2) Tick the correct answer for the following statements 1. An ideal transformer is connected to a 50 V battery while the load is 10062. The turn ratio is 1:2. Output power is: (d) 50 W (e) 100 W (c) 25 W (a) 0 W (b) 1 W
1) what is the potential transformer used for in power substation? 2) what is process leads to lowering the number of free electrons? 3) what is The Townsend's Criterion 4) why Sulphur Hexafluorid has good insulation strength? 5) What is Intrinsic Breakdown
A 200/100 V, single-phase transformer is rated 10 kVA. If this transformer is connected as an auto-transformer across a 50 V supply, what is the maximum output voltage that can be obtained from this transformer? If the load current is now 8 A, determine the kVA output.
In the circuit in Figure 2, the capacitor connected to the a-b terminals of the transformer anda circuit consisting of resistance is defined as a load circuit. a)Find the average power spent by the load circuit? b) How much of the average power calculated in a) by the resistance in the load circuit and how muchspent by the capacitor? Comment on the results obtained?
Thelow, voltage winding of a 300KVA,11000/2200 V,50HZ transformer has 190 turns and aresistance of 0.06Q.Thehigh voltage side has 910 turnsand a resistance of 1.6Q.Whenthelow,voltage winding is short, circuited, the fullI, load currentis obtained with 550 V applied toh.v.side.Calculate the equivalentresistance andleakagereactancereffered tohigh, voltage side Assume full, load efficiency of 98.5 %.
If the Voltage in the following circuit is 115 Volts, and current "I" is 11 Amp then 2R V 4R E 4R the value of R is= Which of the following is not an application of a transformer? O a. Isolating one circuit from another circuit. b. Increasing or decreasing the power level. O. Matching the impedance of source and its load for maximum power transfer. O d. Increasing or decreasing voltage level.
A 20 kVA closet transformer located inside a building is used to step up the voltage for the building. It is connected to a primary 4800 V AC power source. The ratio of the number of primary windings to the number of secondary windings on the transformer is 20 to 40. show full detailed solution. What is the voltage provided to the building? What is the amount of current provided to the building?
In the T-shaped equivalent circuit of the transformer for the load mode, indicate the resistance in which power will be released, equal to the electrical losses of the secondary winding. Select one: O a. 12 O b.11 O c. Zload O d. l2 O e. Im Clear my choice Which of the listed quantities determines on the substitution circuit the resistance of the magnetization branch Rm Select one: O a. Dol, Do2 O b. Pel - electrical losses O C. Pst - losses in steel O d. K-transformation ratio O e. om - mutual induction flow Clear my choice
A step-down transformer has a turn ratio of 8:1. If the primary voltage is 120 Vms, what is the secondary voltage? If the primary current is 0.25Ams, what is the secondary current? ANS. V2 = 15 Vrms; 12 = 2 Arms 4.
13. A 60 kVA, 2300/230 volt, 60-cycle transformer is tested in the laboratory so that its characteristics maybe determined. The standard test requires an open circuit test and short circuit test. Open circuit test I = 6.5 A E = 230 V P = 190 W Short circuit test I = 21.7 A E = 115 V P = 600 W Determine the efficiency of the transformer at half load, 0.80 pf
Question 1: What is the power observed in the energy analyzer when the rated voltage(U1) is applied to the primary of the transformer, and there is no load at the secondary? Question 2: Find the transformation ratio of the transformer using the values U1,U2 recorded in the experiment. Question 3: Sketch the no-load operation graph of the transformer using the values U1, 12 and the values read in the energy analyzer. Question 4: How can we find the number of turns of transformer? Question 5: Explain the operation principle of the transformer. Question 6: State your final observations about the experiment.
IV- Transformer Design You are requested to design a transformer which will have the following characteristics: Two windings, one primary and one secondary with an E-shape core. Vin = 220 V RMS 16 s Vout < 20 v RMS open circuits 14.5 V < Vout s 16 V on a 100 N resistor. 2 VA < S 35 VA apparent power. Show all steps of your design with calculation. - Indicate current in primary and secondary in both open circuit and with 100 n resistor. Simulate your transformer and show both input and output voltage with the 100 Ω load. Talk about your transformer and wire sizes.

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