4. 100 kVA, 6800-240 V, 50 Hz single phase step down transformer has the following parameters: RLS=0.0082 RHs=2.62 Rfe-HS=50002 XLs=0.0152 XHs=5.22 Xm,HS=88002 Transformer is delivering 80% of rated load at rated voltage and 0.95 lagging power factor. Determine the following: a) The equivalent impedance of the transformer referred to primary. b) Input impedance of the combined transformer and load. c) Actual input voltage at HV side. d) Input impedance if load is disconnected. e) Exciting current at no load.

4. 100 kVA, 6800-240 V, 50 Hz single phase step down transformer has the following parameters: RLS=0.0082 RHs=2.62 Rfe-HS=50002 XLs=0.0152 XHs=5.22 Xm,HS=88002 Transformer is delivering 80% of rated load at rated voltage and 0.95 lagging power factor. Determine the following: a) The equivalent impedance of the transformer referred to primary. b) Input impedance of the combined transformer and load. c) Actual input voltage at HV side. d) Input impedance if load is disconnected. e) Exciting current at no load.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Similar questions

Puestion:- Dran. approximate transformer quantities. into all - model of secondaryreferred to primary.
6. 150 kVA, 2800-240 V, 50 Hz transformer. 0.0082N , Xeg.Ls = 0.0223N Rfe.Hs=22002 Xm.Hs=12002 Reg.Ls Step down transformer delivers 135 kW to a load at 0.9 lagging power factor at rated voltage. Determine the Following: a) Terminal voltage (LV side). b) Terminal voltage (HV side). c) High side current. d) Input impedance. e) Voltage regulation.
A 150 kVA, 2500/250 V, 50 Hz, single phase transformer has a no-load current of 0.75 A and a core loss of 850 W, when the high voltage side is energized at rated voltage and a frequency. Determine the following : 1) The core loss component of no-load current 2) The magnetizing component of the no-load current 3)The core loss resistance on the high voltage side in ohm 4)The magnetizing resistance on the high voltage side in ohm
In no load phasor diagram of practical transformer, the magnetizing current Imag is ____________________ with primary voltage Vp. 90degreeout of phase Leading by 60degree In phase Lagging by 60degree
SOLVE STEP BY STEP IN DIGITAL FORMAT XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX 2. A transformer with a 10/1 turns ratio has a maximum flux density of 60,000 lines/in2, when the primary winding is connected to a 2300 V power supply at 60 cps. What will be the maximum flux density if the secondary is connected to a 115 volt supply at 25 cps with the primary open?
Single phase half wave AC-AC converter has a resistance of R = 50 ohms. Input voltage is given as 230 Vrms. Transformer conversion ratio is 1:1. If T1 thyristor is triggered at 60 degrees; a)Rms output voltage? b)Output power? c)RMS load current and average load current? d)Input power factor? e)Average and RMS thyristor current?
In no load phasor diagram of practical transformer, the magnetizing current is with primary voltage Vp. O In phase O Leading by 60 Degrees O Lagging by 60 Degrees O 90 Degree out of phase
A voltage multiplier has 12 stages Capacitances, all equal to 0.08 μF. Thesupply transformer secondary voltage is 150 kV at a frequency of 100 Hz. Load current 0,006A.What is the percentage ripple, the regulation and the optimum number of stages for minimumregulation or voltage drop.
10
A transformer has equivalent resistance referred to secondary R02 and reactance referred to secondary X02 . The regulation will be zero when the phase angle is
Determine the regulation of a transformer in which thepercentage resistance drop is 1% and the percentagereactance drop is 5% when the power factor 0.8 leading.
4. What are the advantages of Delta connection in high power transformer?