Question
Download Solution PDFWhat is the relation between line voltage and phase voltage in a delta connection?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFIn a three-phase load, three different impedances are connected together in a star or delta fashion.
The delta in a three-phase system is formed by connecting one end of the winding to the starting end of other winding and the connections are continued to form a closed loop.
The star in the three-phase system is formed by connecting one end of all three impedances are connected together.
Important Points:
In a star-connected three-phase system,
VL = √3 × Vph
And IL = Iph
\({I_{ph}} = \frac{{{V_L}}}{{\surd 3Z}}\)
In a delta connected three-phase system,
VL = Vph
IL = √3 × Iph
\({I_{ph}} = \;\frac{{{V_L}}}{Z}\)
Where,
VL is line voltage
Vph is phase voltage
IL is line current
Iph is the phase currentLast updated on Jul 17, 2025
-> The Railway Recruitment Board has scheduled the RRB ALP Computer-based exam for 15th July 2025. Candidates can check out the Exam schedule PDF in the article.
-> RRB has also postponed the examination of the RRB ALP CBAT Exam of Ranchi (Venue Code 33998 – iCube Digital Zone, Ranchi) due to some technical issues.
-> UGC NET Result Date 2025 Out at ugcnet.nta.ac.in
-> UPPSC RO ARO Admit Card 2025 has been released today on 17th July 2025
-> Rajasthan Police SI Vacancy 2025 has been released on 17th July 2025
-> HSSC CET Admit Card 2025 has been released @hssc.gov.in
-> There are total number of 45449 Applications received for RRB Ranchi against CEN No. 01/2024 (ALP).
-> The Railway Recruitment Board (RRB) has released the official RRB ALP Notification 2025 to fill 9,970 Assistant Loco Pilot posts.
-> The official RRB ALP Recruitment 2025 provides an overview of the vacancy, exam date, selection process, eligibility criteria and many more.
->The candidates must have passed 10th with ITI or Diploma to be eligible for this post.
->The RRB Assistant Loco Pilot selection process comprises CBT I, CBT II, Computer Based Aptitude Test (CBAT), Document Verification, and Medical Examination.
-> This year, lakhs of aspiring candidates will take part in the recruitment process for this opportunity in Indian Railways.
-> Serious aspirants should prepare for the exam with RRB ALP Previous Year Papers.
-> Attempt RRB ALP GK & Reasoning Free Mock Tests and RRB ALP Current Affairs Free Mock Tests here
-> Bihar Police Driver Vacancy 2025 has been released @csbc.bihar.gov.in.