Question: Calculate: (a) F.L. efficiency at unity p.f. (b) The secondary terminal voltage when supplying full-load secondary current at p.s. (i)m 0.8 lag (ii) 0.8

Calculate: (a) F.L. efficiency at unity p.f. (b) The secondary terminal voltage

Calculate: (a) F.L. efficiency at unity p.f. (b) The secondary terminal voltage when supplying full-load secondary current at p.s. (i)m 0.8 lag (ii) 0.8 lead for the 4-KVA, 200/400-V, 50-Hz, 1-phase transformer of which the following are the test figures: Open circuit with 200 V supplied to the primary winding-power 60 W. Short circuit with 16 V applied to the h.v. winding - current 8 A, power 40 W. answers [0.97, 383 V, 406 V]

Step by Step Solution

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 Accounting Questions!

A three-phase generator supplied 3.6 kVA at a power factor of 0.85 lagging. If 2500 W are delivered to the load and line losses are 80 W per phase, what are the losses in the generator?

A 1, 10 kVA, 2400=240 V, 60 Hz distribution transformer has the following characteristics: Core loss at full voltage = 100 W Copper loss at half load = 60 W (a) Determine the efficiency of the...

A 1-phase transformer has 500 primary and 1200 secondary turns. The net cross-sectional area of the core is 75 cm2. If the primary winding be connected to 400 V,50 Hz supply, calculate the peak value...

A step-up transformer is designed to have an output voltage of 2 200 V (rms) when the primary is connected across a 110-V (rms) source. (a) If the primary winding has 80 turns, how many turns are...

The resistances and leakage reactances of a 30-kVA, 60-Hz, 2400-V: 240-V distribution transformer are R1 = 0.68 R2 = 0.0068 , X11 = 7.8 X12 = 0.0780 where subscript 1 denotes the 2400-V winding...

The open-circuit terminal voltage of a three-phase, 60-Hz synchronous generator is found to be 15.4 kV rms line-to-line when the field current is 420 A. a. Calculate the stator-to-rotor mutual...

1. A transformer having 1000 primary turns is connected to a 250 V ac supply. For a secondary voltage of 400 V, the number of secondary turns should be : 2. A 3 phase step down transformer is...

The primary windings of a transformer which has an 80% efficiency are connected to 110-V ac. The secondary windings are connected across a 2.4-, 75-W lightbulb, (a) Calculate the current through the...

The motors $M_{1}$ and $M_{2}$ of Problem 3.45 have inputs of 120 and $60 \mathrm{MW}$, respectively, at $13.2 \mathrm{kV}$, and both operate at unity power factor. Determine the generator...

A single-phase transformer has 480 turns on the primary and 90 turns on the secondary. The mean length of the flux path in the iron core is 1.8 m and the joints in the magnetic circuit are equivalent...

Office Supply World assigns overhead to a department based on the square feet of office space it occupies. The overhead for a month totaled $9,000 and each department occupies the following number of...

Here is financial information for Pauletti Inc. InstructionsPrepare a schedule showing a horizontal analysis for 2012, using 2011 as the base year. December 31, 2012 December 31, 2011 Current assets...

Question 5 2 pts Which of the following is false regarding eligibility of employees within qualified retirement plans? The standard eligibility requirements state that an employee must be considered...

What is targeted advertising? a. How is it revolutionizing the advertising industry? b. How is this affecting newspapers and TV? c. Is targeted advertising desirable for all firms?

Flora Hall went to Rent-A-Center in Milwaukee and signed an agreement to make monthly payments of $77.96 for 19 months in exchange for Rent-ACenters allowing her to have a Rent-A-Center washer and...

What is a liability? How does the definition of liability relate to the definition of asset?

Refer to the Ludeman Security Systems situation in Exercise 11-9. Suppose that Ludeman Security Systems' lawyers advise that a preliminary judgment of $300,000 has been rendered against the company....

1. Describe the role of division of labor and hierarchy at Honest Tea. 2. In what ways has business strategy and organizational size impacted Honest Tea? How might this change in the future? 3. Does...

Solve Jump to Qs 01:56:55 Flag Is this statement correct regarding IRA rollovers? Is this a correct option ? A Taxpayer can make as many rollovers from their 401(k) into their Traditional IRA as they...

Lucy Liu has been asked to monitor the efficiency and effectiveness of a newly installed machine. The specialized machine has been guaranteed by the manufacturer to package 2,000 engine gaskets per...

Your FI number There's a concept in personal finance known as your FI number, where Fl stands for financial independence. Your Fl number is the amount of money you need to accumulate ( e . g . , in...

please help me solve all of these questions! the 1st two pictures ks what the whole assognment is based off of! thanks so much Phoenix Company's 2019 master budget included the following fixed budget...

Founders State Bank developed a standard for teller staffing that provided for one teller to handle 10 customers per hour. During June, the bank averaged 58 customers per hour and had eight tellers...

Can an expert in advanced heat transfer review my work and verify my solutions. Please show all work where corrections are needed. I have uploaded the original problem materials for reference as...

Qention CHO Mark Sherwing we w 2017 2016 Financial Ehele Outtur (Alter, - athai 2012 Current Assets 5925359 Total Assets 1.963,6715 Current Liabilities 401,763 Total Liabilities 554,645 Net Income...