Homework Answers
Add Answer to:
The transformer's primary and secondary rating voltage are 8800V/220V The short circuit power loss is 2000W....
{R E313 A The transformer's primary and secondary rating voltage are 1100V/110V The short circuit power...
{R E313 A The transformer's primary and secondary rating voltage are 1100V/110V The short circuit power loss is 500W. The open circuit power loss is 100W. a When the primary side is short circuit, the secondary side current is 5A when connecting to a rating voltage. When the secondary side is open circuit, the primary side current is 0.5A when connecting to a rating voltage. What is the equivalent series impedance when converting to the primary side or secondary side,...
Q8. The following data are obtained when open circuit and short circuit tests are performed on...
Q8. The following data are obtained when open circuit and short circuit tests are performed on a single phase, 50 kVA, 2400/240 Volt 50 HZ distribution transformer. VOLTAGE(volts)CURRENT (amperes) POWER (watts) 213 Measurement in low voltage side with high voltage winding open Measurement on high voltage side with low voltage winding shorted 240 5.97 60 20.8 750 (a) Neglecting the series impedance, determine the exciting admittance referred to the high voltage side. (b) Neglecting the exciting admittance, determine the equivalent...
Problem 1: A three-phase transformer has the following name plate data: Rated Power Primary voltage Secondary...
Problem 1: A three-phase transformer has the following name plate data: Rated Power Primary voltage Secondary Voltage Excitation reactance Series Impedance 150 MVA 230 kV 32 kV 30 (pu) 0.02+0.15j (pu) The transformer is Y/A connected. Answer the following questions: a) What are the nominal (rated) primary and secondary line currents?| b) What is the nominal value of the Delta-side winding (internal) current? c) What is the secondary to primary winding turn ratio? d) The transformer is supplying 150 MVA...
QUESTION 3 A 200 - MVA, 15/200 kV single-phase power transformer has a per – unit...
QUESTION 3 A 200 - MVA, 15/200 kV single-phase power transformer has a per – unit resistance of 1.2 percent and a per-unit reactance of 5 percent (data taken from the transformer's nameplate). The magnetizing impedance is impedance is j80 per unit. a. Find the equivalent circuit referred to the low-voltage side of this transformer. b. Calculate the voltage regulation of this transformer for a full-load current at power factor of 0.8 lagging. c. Assume that the primary voltage of...
A three-phase Yy0 connected transformer has a nominal rating of 250 kVA and a voltage ratio...
A three-phase Yy0 connected transformer has a nominal rating of 250 kVA and a voltage ratio 15:0.4 kV. After conducting the short-circuit test, where the secondary winding is short-circuited, it is found that the primary series resistance is 0.08 pu and the primary series impedance magnitude is 0.1pu. The effect of the parallel branch in the transformer’s equivalent circuit may be neglected. Explain what information ‘Yy0’ gives about the transformer. Draw the per-phase equivalent circuit of the transformer during the...
Choose the base power as 50-KVA, the primary base voltage as 2400-V, the secondary voltage as...
Choose the base power as 50-KVA, the primary base voltage as 2400-V, the secondary voltage as 240-V: (a) Calculate and sketch the transformer equivalent circuit in per unit values' (b) The transformer is carrying rate load of 1.0 pu at.8 power factor lagging. Calculate the primary voltage in per unit. (c) Calculate the efficiency of the transformer at this load. A 50-KVA 2400/240-V, 60-Hz distribution transformer is tested with the following results: Open circuit Test Short Circuit Test Voc =...
R111n2 L2 50 0.0796 1.59 VOFF 0 VAMPL110 FREQ 60 R2 1k The above circuit has...
R111n2 L2 50 0.0796 1.59 VOFF 0 VAMPL110 FREQ 60 R2 1k The above circuit has a 1 Find the current through the primary Find the current through the secondary 10V, 60Hz source d. Determine the equivalent circuit when referring the secondary to the primary e. Determine the equivalent circuit when referring the primary to the secondary RS C 5 0.00133 RL 200 The above circuit has a 110V, 60Hz source Determine a new winding ratio and value for the...
A transformer has 1020 turns in the primary and 12 turns in the secondary. (a) Is...
A transformer has 1020 turns in the primary and 12 turns in the secondary. (a) Is this a step-up or step-down transformer? (b) If the primary is connected across 120 V rms, what is the open-circuit voltage across the secondary? ( ) V (c) If the primary current is 0.3 A, what is the secondary current, assuming negligible magnetization current and no power loss? ( ) A
A 400-MVA, 200-kV/20-kV, three phase Y-Y transformer has an equivalent series impedance of ZTL = 0.012...
A 400-MVA, 200-kV/20-kV, three phase Y-Y transformer has an equivalent series impedance of ZTL = 0.012 + 20.0162 per phase referred to the low-voltage side (secondary side). The transformer is supplying a three-phase load of 300-MVA, 0.8 power factor lagging at terminal voltage of 20 kV (line-to-line) on its low-voltage side (secondary side) as shown in Fig. 22. The primary is supplied from a transmission line with an impedance of ZL = 0.5 + j1.0 per phase. The line-to-neutral load...
EMM2802 MAYIJUNE 2016 QUESTION B A single phase transformer has a high voltage to low voltage...
EMM2802 MAYIJUNE 2016 QUESTION B A single phase transformer has a high voltage to low voltage ratio of 10. The following parameters are referred to low voltage side, with a supply of 200V. Equvalent Impedance referred to low woltage side Zev 0.1+jo.s a Load impedance referred to low voltage side R-4000 X-2310 Magnetizing Branch referred to low voltage side Draw an approximate equivalent circut with the given parameters and determine the following: 81 The magnetizing current (), the core loss...
{R E313 A The transformer's primary and secondary rating voltage are 1100V/110V The short circuit power loss is 500W. The open circuit power loss is 100W. a When the primary side is short circuit, the secondary side current is 5A when connecting to a rating voltage. When the secondary side is open circuit, the primary side current is 0.5A when connecting to a rating voltage. What is the equivalent series impedance when converting to the primary side or secondary side,...
Q8. The following data are obtained when open circuit and short circuit tests are performed on a single phase, 50 kVA, 2400/240 Volt 50 HZ distribution transformer. VOLTAGE(volts)CURRENT (amperes) POWER (watts) 213 Measurement in low voltage side with high voltage winding open Measurement on high voltage side with low voltage winding shorted 240 5.97 60 20.8 750 (a) Neglecting the series impedance, determine the exciting admittance referred to the high voltage side. (b) Neglecting the exciting admittance, determine the equivalent...
Problem 1: A three-phase transformer has the following name plate data: Rated Power Primary voltage Secondary Voltage Excitation reactance Series Impedance 150 MVA 230 kV 32 kV 30 (pu) 0.02+0.15j (pu) The transformer is Y/A connected. Answer the following questions: a) What are the nominal (rated) primary and secondary line currents?| b) What is the nominal value of the Delta-side winding (internal) current? c) What is the secondary to primary winding turn ratio? d) The transformer is supplying 150 MVA...
QUESTION 3 A 200 - MVA, 15/200 kV single-phase power transformer has a per – unit resistance of 1.2 percent and a per-unit reactance of 5 percent (data taken from the transformer's nameplate). The magnetizing impedance is impedance is j80 per unit. a. Find the equivalent circuit referred to the low-voltage side of this transformer. b. Calculate the voltage regulation of this transformer for a full-load current at power factor of 0.8 lagging. c. Assume that the primary voltage of...
Choose the base power as 50-KVA, the primary base voltage as 2400-V, the secondary voltage as 240-V: (a) Calculate and sketch the transformer equivalent circuit in per unit values' (b) The transformer is carrying rate load of 1.0 pu at.8 power factor lagging. Calculate the primary voltage in per unit. (c) Calculate the efficiency of the transformer at this load. A 50-KVA 2400/240-V, 60-Hz distribution transformer is tested with the following results: Open circuit Test Short Circuit Test Voc =...
R111n2 L2 50 0.0796 1.59 VOFF 0 VAMPL110 FREQ 60 R2 1k The above circuit has a 1 Find the current through the primary Find the current through the secondary 10V, 60Hz source d. Determine the equivalent circuit when referring the secondary to the primary e. Determine the equivalent circuit when referring the primary to the secondary RS C 5 0.00133 RL 200 The above circuit has a 110V, 60Hz source Determine a new winding ratio and value for the...
A 400-MVA, 200-kV/20-kV, three phase Y-Y transformer has an equivalent series impedance of ZTL = 0.012 + 20.0162 per phase referred to the low-voltage side (secondary side). The transformer is supplying a three-phase load of 300-MVA, 0.8 power factor lagging at terminal voltage of 20 kV (line-to-line) on its low-voltage side (secondary side) as shown in Fig. 22. The primary is supplied from a transmission line with an impedance of ZL = 0.5 + j1.0 per phase. The line-to-neutral load...
EMM2802 MAYIJUNE 2016 QUESTION B A single phase transformer has a high voltage to low voltage ratio of 10. The following parameters are referred to low voltage side, with a supply of 200V. Equvalent Impedance referred to low woltage side Zev 0.1+jo.s a Load impedance referred to low voltage side R-4000 X-2310 Magnetizing Branch referred to low voltage side Draw an approximate equivalent circut with the given parameters and determine the following: 81 The magnetizing current (), the core loss...
Most questions answered within 3 hours.
-
Write a program to solve the Josephus problem, with the following
modification:
Sample Input:
./a.out n...
asked 1 hour ago -
At the start of a CD it is spinning at a rate of 525 rpm
(revolutions...
asked 2 hours ago -
4. Without doing any calculations, predict whether the observed
∆T would increase, decrease or remain the...
asked 3 hours ago -
Based on the range, which of the following sets of scores has
the greatest variability? 3,...
asked 4 hours ago -
Ripples in a pond travel at a velocity of 3 m/s with one peak
passing a...
asked 4 hours ago -
A man stands on the roof of a building of height 13.0 mm and
throws a...
asked 4 hours ago -
The extent to which assets are financed by borrowed funds and
other liabilities is indicated by:...
asked 5 hours ago -
Explain in detail
Germany is the fifth largest economy
explain what goods and services Germany specializes...
asked 5 hours ago -
The density of platinum is 21.45 g/mL. If a cube of platinum
with a mass of...
asked 5 hours ago -
Accounts Receivable
Sales
A/R Posting
Extended Sales Invoice
Packing Slip
Compare invoice to packing slip 2...
asked 5 hours ago -
Michaella, age 23, is a full-time law student and is claimed by
her parents as a...
asked 5 hours ago -
Why are polymers not typically casted into products?
asked 6 hours ago