Determine the power-factor of the rated load

Assignment Help Electrical Engineering

Reference no: EM131266896

The following test results were obtained for a 20 kVA, 50 Hz, 2400/240 V distribution transformer: Open-circuit test (LV): 240 V, 1.066 A, 126.6 W

Short-circuit test (HV): 57.5 V, 8.34 A, 284 W

(a) When the transformer is operated as a stepdown transformer with the output voltage equal to 240 V, supplying a load at unity power factor, determine the maximum efficiency and the unity power factor load at which it occurs.

(b) Determine the power-factor of the rated load, supplied at 240 V, such that the terminal voltage observed on reducing the load to zero is still 240 V.

Reference no: EM131266896

Questions Cloud

Uniform computer information transactions act : What is the need for a Uniform Computer Information Transactions Act? Brooksold Corporation contracts to have Zealent Construction Company build a factory for $4,000,000. Days before the start of construction, Zealent withdraws from the contract. Dis..

Explain what are the pros of raising the prices at bulls eye : The manager is unsure of this strategy as recent data points to increasing numbers of individuals shopping more and more. What are the pros and cons of raising the prices at Bulls Eye and would that strategy be profitable?

Provide an example business for each form : Provide a 100- to200-word summary in which you provide an example business for each form. Discuss at least one of the advantages and one of the disadvantages of that form and potential legal forms that might be required

Is your product unique enough to be patented : How would you classify the offering to your customers? Is it a consumer product? A business-to-business product? A good or a service?

Determine the power-factor of the rated load : Determine the power-factor of the rated load, supplied at 240 V, such that the terminal voltage observed on reducing the load to zero is still 240 V.

Post-closing balance of the retained earnings account : The adjusted trial balance at December 31, 2015, for Smith Company includes the following selected amounts. Prepare entries to close these accounts in journal entry form. Set up T-accounts for each of these ledger accounts, enter the balances above, ..

Compute the price elasticities of demand in each market : Calculate the price elasticities of demand in each market and discuss these in relation to the prices to be charged in each market. Derive the demand curves for GGC's product in each market.

Place your companys offerings into a product portfolio : Place your company's offerings into a product portfolio.- Are there any special product features that selling on the Internet would allow you to add or force you to take away?

What do you think is the best tax rate : Assume that you are a full-time worker earning $10 per hour, $80 per day, $400 per week, $20,000 per year. Would you quit their job if the tax rate was 20%? What about 30%? 50%? What do you think is the best tax rate? What are the economy-wide impact..

User Account

All Pages