Examoogle
ExamsTest SeriesCBATRank CheckPrevious Year PapersPassBook StoreMy BooksAI Tutor
ЁЯЫТ0
рдЕA
Examoogle

India's most trusted platform for competitive exam PDF books. Expert-authored, watermark-protected, instant access.

Exams & Practice
All Exams & SyllabusMock Test SeriesPrevious Year PapersPractice Questions (MCQs)Recruitment Notifications
Quick Links
Examoogle AI TutorExam NewsBook StoreMy BooksLogin / Sign Up
Support
About UsRefund PolicyPrivacy PolicyTerms of UseContact Us
┬й 2026 Examoogle. India's #1 competitive exam AI tutor.
ЁЯФТ SSL SecuredЁЯУ▒ UPI AcceptedЁЯз╛ GST Invoice
Examoogle

Join 60,000+ competitive exam aspirants

or with email
By continuing, you agree to ourTerms of Service&Privacy Policy
Your Cart
SubtotalтВ╣0
TotalтВ╣0
Examoogle тАв User тАв info@examoogle.com тАв EE-2024-8821
Chapter 1 of 12 тАв Page 1 of 248ЁЯФТ Protected PDF тАв Watermarked
Back to Practice Questions
ElectricalPower System
PrevNext

Conductor connecting consumer's terminals to the distributors is called

A

Feeder

B

Distributor

C

Service main

D

None of above

Correct Answer

тЪЩя╕П TE тАв Technical Concept & PrincipleElectricalPower System
Option C

Service main

Quick Summary:

In an electrical power distribution system, the service main is the specific conductor assembly that creates the final link between the public distributor (or pole-mounted transformer) and the individual consumer's premises/metering terminals. It is designed to carry the current required by the specific consumer load.

тЪЩя╕ПTETechnical SolutionConcept & Principle
ЁЯТб Explanation

In an electrical power distribution system, the service main is the specific conductor assembly that creates the final link between the public distributor (or pole-mounted transformer) and the individual consumer's premises/metering terminals. It is designed to carry the current required by the specific consumer load.

ЁЯФв Key Formulas

Vconsumer=VdistributorтИТIsmRsmV_{consumer} = V_{distributor} - I_{sm}R_{sm}VconsumerтАЛ=VdistributorтАЛтИТIsmтАЛRsmтАЛ тАФ Voltage drop across service main where IsmI_{sm}IsmтАЛ is consumer current and RsmR_{sm}RsmтАЛ is service main resistance

тЪЩя╕П Working Principle

The electrical supply flows from the Generating Station to Transmission lines, then to Sub-transmission, and finally reaches the Distribution system. The distributor provides power to multiple consumers via service mains. The service main acts as a tap-off from the distributor to the energy meter installed at the consumer's end.

ЁЯУМ Key Points
  • тЦ╕

    The Service Main connects the distributor to the consumer premises.

  • тЦ╕

    The cross-sectional area of a service main is determined by the consumer's connected load.

  • тЦ╕

    It typically includes the service line, energy meter, and main switch/MCB.

  • тЦ╕

    It is usually the last part of the electrical supply chain owned by the utility up to the point of connection.

тЬЕ Advantages
  • тЦ╕

    Modular connection system

  • тЦ╕

    Allows individual metering for each consumer

тЭМ Disadvantages / Limitations
  • тЦ╕

    Potential for voltage drop at long distances from the distributor

  • тЦ╕

    Vulnerable to environmental damage and unauthorized tampering

ЁЯЫая╕П Applications / Uses
  • тЦ╕

    Residential building power supply

  • тЦ╕

    Industrial unit power tapping

ЁЯУД Additional Information
  • тЦ╕

    Option A (Feeder) connects the substation to the distributor, having no tappings.

  • тЦ╕

    Option B (Distributor) is the main line from which tappings are taken for various consumers.

  • тЦ╕

    Voltage drop in service mains should be kept within limits specified by Indian Electricity Rules (usually ┬▒5%\pm 5\%┬▒5%).

ЁЯУК Diagram / Illustration
DistributorService MainConsumer
тЬЕ

C is correct тАФ The service main is the conductor that physically connects the distributor cable to the consumer's service terminals.

Core Concepts Used
Click any tag to open in AI Tutor
Electrical Distribution Service Connection Load Terminal
ЁЯТб EXAM TIP

Always remember the hierarchy: Generating Station тЖТ\rightarrowтЖТ Transmission тЖТ\rightarrowтЖТ Substation тЖТ\rightarrowтЖТ Feeder тЖТ\rightarrowтЖТ Distributor тЖТ\rightarrowтЖТ Service Main.

Related Questions

ElectricalPower System
The specified quantities of Generation bus is
ElectricalPower System
When an alternator connected to the bus-bar is shut down the bus-bar voltage will
ElectricalPower System
The current drawn by the line due to corona losses is _______
ElectricalPower System
The specified quantities of load bus are
ElectricalPower System
The advantages of high transmission voltage are ______

Discussion (0)

Loading discussion...
PrevNext