Fill in the blanks with a suitable describing for the following 1. Active component of no load current of transformer is _____________ 2. The resistance of series field windings is __________ and it's have ____________ number of turns 3. Leakage flux of transformer is ___________ 4. Starting torque is __________ in D.C. series motor 5. PID controller is _________

Fill in the blanks with a suitable describing for the following 1. Active component of no load current of transformer is _____ 2. The resistance of series field windings is and it's have number of turns 3. Leakage flux of transformer is _ 4. Starting torque is in D.C. series motor 5. PID controller is ___

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.34P: Three single-phase, two-winding transformers, each rated 450MVA,20kV/288.7kV, with leakage reactance...

See similar textbooks

Similar questions

A single-phase l0-kVA,2300/230-volt,60-Hz two-winding distribution transformer is connected as an autotransformer to step up the voltage from 2300 to 2530 volts (a) Draw a schematic diagram of this arrangement, showing all voltages and currents when delivering full load at rated voltage. (b) Find the permissible kVA rating of the autotransformer if the winding currents and voltages are not to exceed the rated values as a two-winding transformer. How much of this kVA rating is transformed by magnetic induction? (C) The following data are obtained from tests carried out on the transformer when it is connected as a two-winding transformer: Open-circuit test with the low-voltage terminals excited: Applied voltage =230V, input current =0.45A, input power =70W. Short-circuit test with the high-voltage terminals excited: Applied voltage =120, input current =4.5A, input power =240W. Based on the data, compute the efficiency of the autotransformer corresponding to full load, rated voltage, and 0.8 power factor lagging. Comment on why the efficiency is higher as an autotransformer than as a two-winding transformer.
Using the transformer ratings as base quantities. work Problem 3.14 in per-unit.
Three single-phase, two-winding transformers, each rated 450MVA,20kV/288.7kV, with leakage reactance Xeq=0.10perunit, are connected to form a three-phase bank. The high-voltage windings are connected in Y with a solidly grounded neutral. Draw the per-unit equivalent circuit if the low-voltage windings are connected (a) in with American standard phase shift or (b) in Y with an open neutral. Use the transformer ratings as base quantities. Winding resistances and exciting current are neglected.
Explain the losses of transformer due to
In a single phase transformer when all parameter is shifted to primary side value of primary side resistance is 0.5 ohm and resistance which is shifted from secondary to primary is also 0.5 ohm. If full load current in primary side is 20(A) what is total copper loss in transformer.
What is a transformer and explain how does it works. What are the different type of transformer and explain its function and purposes. What are the important requirement of transformer winding. What is a transformer bushing and why it is provided. What are the type of cooling system for oil immersed transformer and explain the method of cooling system.
1- When loaded the transformer : a- Chang of flux will be constant just during the load. during the no-load. c- Chang of flux will be constant during load and no-load. d- Chang of flux will be variable during the load and no-load. b- Chang of flux will be constant just 2- When transformer is open circuit a- the phase shift between voltage and current is bigger than ninety degrees. shift between voltage and current is zero. c- the phase shift between voltage and current is equal ninety degrees. d- the phase shift between voltage and current is less than ninety degrees. b- the phase 3- In practical transformer: a- V E: c- V, E: d- V,> E, , V;< E,
With the neat diagram explain the construction and working of Sumpner’s or Back –to-Back testof single phase of transformer.
what is the Formulae of short test of single phase transformer and Formulae to determine efficiency and regulation
In the single-phase, three- winding, transformer, the primary current is equal to lo at the condition of ints there is no load on tertiary windings the current in secondary windings equal to zero the resistances (R1, R2, and R3) in transformer windings are equal the inductances (L1, L2, and L3) in transformer windings are equal.
1. Why do we represent leakage flux in a transformer by inductive reactance? 2. What will happen if transformer in parallel connection have different voltage ratio?
Current situation analysis about transformer oil spew and due to stoms.