Question: A 20 kVA, 1000 V/200 V, 50 Hz single-phase transformer gave the following test results:- Open Circuit Test: 200 V, 3.5 A, 400 W

A 20 kVA, 1000 V/200 V, 50 Hz single-phase transformer gave the following test results:- Open Circuit Test: 200 V, 3.5 A, 400 W on L.V. side Measurement Short Circuit Test: 50 V, 30 A, 1200 W on H. V. side Measurement Evaluate (a) the core loss resistance and magnetizing reactance referred to the H.V. side; (5 marks) (b) the equivalent winding resistance and reactance referred to the H.V. side; (5 marks) (c) the loading at which maximum efficiency is attained; (5 marks) (d) the value of the maximum efficiency at unity power factor. (5 marks)

Step by Step Solution

★★★★★

3.48 Rating (158 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Programming Questions!

Since the complex numbers are not informative, we compute the magnitude and the phase from the Real and Imaginary matrix of Fourier Transform F ( ( u , , v ) . ) . What is the information that...

The following additional information is available for the Dr. Ivan and Irene Incisor family from Chapters 1-5. Ivan's grandfather died and left a portfolio of municipal bonds. In 2012, they pay Ivan...

This case was written by Professor Michele Greenwald, Visiting Professor of Marketing at HEC Paris, for use with Advertising and Promotion: An Integrated Marketing Communications Perspective 7th...

Regarding WPAv3, select TRUE statements. a. The Opportunistic Wireless Encryption handshake allows for "open" Wi-Fi networks while still protecting the Wi- Fi traffic against passive eavesdroppers....

A 1 5 kVA, 4 4 0 / 2 3 0 V , 5 0 Hz , single phase transformer gave the following test results: Open circuit test ( LV side ) : 2 5 0 V , 1 . 8 A , 9 5 W . Short circuit test ( HV side ) : 8 0 V , 1...

6) The balance sheet of the Park, Quid, and Reggie partnership on November 1, 2014 (before commencement of partnership liquidation) was as follows: Cash Accounts Receivable Loan to Park Loan to...

A 1 0 KVA, 2 0 0 / 4 0 0 V 5 0 Hz single transformer gave following test results O . C . test: ( HV winding open ) : 2 0 0 V , 1 . 3 A , 1 2 0 W . S . C test: ( LV winding short ) : 2 2 V , 3 0 A , 2...

Y6 Profitabilitation One Size Fits All Casket Co's income statement for 2008 is as follows: $1,000,000 Cost of 2.100.000 450.000 450.000 75.000 Geen prot Serg and adatve spes Operating proft 375,000...

The results of the open-circuit test and short-circuit test on a single-phase, 20 kVA, 8000/240 V, 60 Hz transformer are as follows: Open circuit test (on the LV side) Short circuit test (on the HV...

Electromechanics 3) The results of the open-circuit test and short-circuit test on a single-phase, 20 kVA, 8000/240 V, 60 Hz transformer are as follows: Open circuit test (on the LV side) Short...

In the situation described in BE 1515, what will be the balances in the balance sheet accounts related to the lease at the end of the first year for Crescent (ignore taxes)?

Walsh Company manufactures and sells one product. The following information pertains to each of the companys first two years of operations: Variable costs per unit: Manufacturing: Direct materials $...

The audit report date is important to users because it indicates the last day Option A on which the financial statements may be filed with the provincial securities commission. Option B of the...

The following accounts were taken from the unadjusted trial balance of Murray Co., a congressional lobbying firm. Indicate whether or not each account would normally require an adjusting entry. If...

Smolira Golf Corp. has 20,000 shares of common stock outstanding, and the market price for a share of stock at the end of 2018 was $58. What is the price-earnings ratio? What are the dividends per...

Isolate the importance of an assets residual value to the lease-versus-buy decision.

Again consider the modified system configuration described in the previous problem and estimate the effects of temperature and pressure on conversion. Do this by calculating CO and Hconversions and...

If L1 = L2 = 4H and k = 0.8, find i1(t) and I2(t) in the circuit in Figure P8.44 ij(t) i2(t) 200 Li 2 320 lcos 100t)V Figure P8.44

Question 1(18 Marks) MMM (Pty) Ltd is a resident of the Republic and owns 2 floors of a building namely the ground floor and 1stfloor. The ground floor of the building is used for the sale of...

Dr. George E. Beeper is a single taxpayer. He lives at 45 Mountain View Dr., Apt. 321, Spokane, WA 99210. Dr. Beeper's Social Security number is 775-88-9531. Dr. Beeper works for the Pine Medical...

Clifford Johnson has a limited partnership investment and a rental condominium. Clifford actively manages the rental condominium. During 2012, his share of the loss from the limited partnership was...

Mark owns his home and has a $250,000 mortgage related to his purchase of the residence. When his daughter went to college in the fall of 2012, he borrowed $20,000 through a home equity loan on his...

Evaluate the following, accurate to the nearest cent.

Evaluate the answers accurate to the cent. 3(6 + 4)2 - 5(17 - 20)2