Question
Download Solution PDFA balanced load of 5 + j4 is connected in delta. What is the impedance per phase of the equivalent star connection?
This question was previously asked in
ESE Electrical 2015 Paper 1: Official Paper
Answer (Detailed Solution Below)
Option 2 : 1.66 + j1.33
Free Tests
View all Free tests >
ST 1: UPSC ESE (IES) Civil - Building Materials
6.3 K Users
20 Questions
40 Marks
24 Mins
Detailed Solution
Download Solution PDFConcept:
The per phase impedance of balanced delta connected circuit = ZΔ
By using delta to star conversion,
The per phase impedance of balanced delta connected circuit = ZY = (1/3) ZΔ
Calculation:
Given delta connected load = 5 + j4
equivalent star connected load = 1/3 (5 + j4) = 1.66 + j1.33
Latest UPSC IES Updates
Last updated on May 28, 2025
-> UPSC ESE admit card 2025 for the prelims exam has been released.
-> The UPSC IES Prelims 2025 will be held on 8th June 2025.
-> The selection process includes a Prelims and a Mains Examination, followed by a Personality Test/Interview.
-> Candidates should attempt the UPSC IES mock tests to increase their efficiency. The UPSC IES previous year papers can be downloaded here.
India’s #1 Learning Platform
Start Complete Exam Preparation
Daily Live MasterClasses
Practice Question Bank
Mock Tests & Quizzes
Trusted by 7.2 Crore+ Students