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01) I . A 100 kVA, three-phase ideal transformer has 4950 turns on the pr imary and 180 turns on the secondary winding. The primary is connected to 11000-volt. Calculate: Power Loss Secondary e.m. f., max imum flux in the core , Primary and

01) I . A 100 kVA, three-phase ideal transformer has 4950 turns on the pr imary and 180 turns on the secondary winding. The primary is connected to 11000-volt. Calculate: Power Loss Secondary e.m. f., max imum flux in the core , Primary and

Introductory Circuit Analysis (13th Edition)
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...
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السلام عليكم شباب بنات إلي يعرف الحل مكائن كهربائيه ميكانيك مرحلة ثالثة تكييف لا يقصر فدوه
4 43 念.l ۳:۳۶ م ۷٫۲كبث © سؤال العلم الوقت المتبقي 2:53:45 Q1) I. A 100 kVA, three-phase ideal transformer has 4950 turns on the pr imary and 180 turns on the secondary winding. The primary is connected to 11000-volt. Calculate: Power Loss , Secondary e.m. f., maximum flux in the core, Primary and Secondary currents on full-load . I. What' s the effect of (Q) on the power transformer when becomes (zero), and why? II. A balanced star-connected load of (4 + j3) 2 per phas is connected to a balanced 3-phase 380 V supply. Find t< Tine current, power factor, power and total volt-amperes. Q2 ) I. phases in the electric feeder (single phase, three-phase) What is the effect of changing the sequence of motor? How do you correct the defect if necessary? I. Find the efficiency to a 3 phase induction motor if The total stator loss is 1.07 KW , useful torque of 260 N. m, with a rotor frequency of 1.7 Hz. and 8 poles neglected the mechanical torque lost in friction ? Q3) I. What' s the effect of The auxiliary winding of split - phase induction motor when it becomes short circuit ? I. Determine the suitable capacitor to make 90° electrical between Im la at starting running of single phase induction motor with a capacitor start motor ,50HZ if you know 220V Zm =2. 4 + j 3. 8 n Za =7.8 + j 3. 2 2 Fareed Al-Khafaji
Transcribed Image Text:4 43 念.l ۳:۳۶ م ۷٫۲كبث © سؤال العلم الوقت المتبقي 2:53:45 Q1) I. A 100 kVA, three-phase ideal transformer has 4950 turns on the pr imary and 180 turns on the secondary winding. The primary is connected to 11000-volt. Calculate: Power Loss , Secondary e.m. f., maximum flux in the core, Primary and Secondary currents on full-load . I. What' s the effect of (Q) on the power transformer when becomes (zero), and why? II. A balanced star-connected load of (4 + j3) 2 per phas is connected to a balanced 3-phase 380 V supply. Find t< Tine current, power factor, power and total volt-amperes. Q2 ) I. phases in the electric feeder (single phase, three-phase) What is the effect of changing the sequence of motor? How do you correct the defect if necessary? I. Find the efficiency to a 3 phase induction motor if The total stator loss is 1.07 KW , useful torque of 260 N. m, with a rotor frequency of 1.7 Hz. and 8 poles neglected the mechanical torque lost in friction ? Q3) I. What' s the effect of The auxiliary winding of split - phase induction motor when it becomes short circuit ? I. Determine the suitable capacitor to make 90° electrical between Im la at starting running of single phase induction motor with a capacitor start motor ,50HZ if you know 220V Zm =2. 4 + j 3. 8 n Za =7.8 + j 3. 2 2 Fareed Al-Khafaji
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