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ElectricalEconomics for Engineers
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Which of the following is not the standard defending the Guide for testing rotating machine?

A

IS 4029:2010

B

IS 7132:1973

C

IS 9320:1979

D

IS 2026:Part1Part_{1}Part1тАЛ-10

Correct Answer

тЪЩя╕П TE тАв Technical Concept & PrincipleElectricalEconomics for Engineers
Option D

IS 2026:Part1Part_{1}Part1тАЛ-10

Quick Summary:

IS 2026 is the Indian Standard specifically reserved for 'Power Transformers' (Part 1 to 10), not for rotating electrical machines. The standards IS 4029, IS 7132, and IS 9320 provide guidelines for the testing, cooling, and classification of rotating electrical machines respectively.

тЪЩя╕ПTETechnical SolutionConcept & Principle
ЁЯТб Explanation

IS 2026 is the Indian Standard specifically reserved for 'Power Transformers' (Part 1 to 10), not for rotating electrical machines. The standards IS 4029, IS 7132, and IS 9320 provide guidelines for the testing, cooling, and classification of rotating electrical machines respectively.

ЁЯФв Key Formulas

Pout=╧ДтЛЕ╧ЙP_{out} = \tau \cdot \omegaPoutтАЛ=╧ДтЛЕ╧Й тАФ Mechanical power output of a rotating machine

ns=120fPn_s = \frac{120 f}{P}nsтАЛ=P120fтАЛ тАФ Synchronous speed of an AC rotating machine

ЁЯУМ Key Points
  • тЦ╕

    IS 4029:2010 covers the guide for testing three-phase induction motors.

  • тЦ╕

    IS 7132:1973 provides the guide for testing synchronous machines.

  • тЦ╕

    IS 9320:1979 covers the guide for testing DC machines.

  • тЦ╕

    IS 2026:Part 1-10 relates to the construction, testing, and performance of power transformers.

тЬЕ Advantages
  • тЦ╕

    Standardization ensures uniform quality control across manufacturers.

  • тЦ╕

    Guidelines allow for comparable efficiency and performance metrics.

тЭМ Disadvantages / Limitations
  • тЦ╕

    Standards require periodic revision to incorporate newer insulation and cooling technology.

ЁЯЫая╕П Applications / Uses
  • тЦ╕

    Factory Acceptance Testing (FAT)

  • тЦ╕

    Routine quality assurance in electrical manufacturing

ЁЯУД Additional Information
  • тЦ╕

    IS 2026 is based on the international standard IEC 60076.

  • тЦ╕

    Engineers must distinguish between static device standards (transformers) and rotational device standards.

ЁЯУК Diagram / Illustration
Standard Classification (BIS)Rotating MachinesStandardsTransformer StandardsIS 4029, IS 7132, IS 9320IS 2026 (Part 1-10)NOT FOR ROTATING MACHINES
тЬЕ

D is correct тАФ IS 2026:Part 1-10 is the standard for Power Transformers, not for rotating electrical machines.

Core Concepts Used
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BIS Standards Rotating Machine Testing Transformer Standards
ЁЯТб EXAM TIP

Always verify the application domain (Static vs. Rotating) when selecting Indian Standards, as IS 2026 is synonymous with transformer testing in most competitive electrical exams.

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