College

We appreciate your visit to 8 Electrical machines must undergo scheduled repair and maintenance List four steps of fault finding in electrical components and equipment 9 State three types of. This page offers clear insights and highlights the essential aspects of the topic. Our goal is to provide a helpful and engaging learning experience. Explore the content and find the answers you need!

8. Electrical machines must undergo scheduled repair and maintenance. List four steps of fault finding in electrical components and equipment.

9. State three types of DC compound motors.

10. Enumerate any four electrical tests done in a transformer before installation.

11. List three basic parts of DC machines.

12. State three generator starting systems.

(4 Marks)
(3 Marks)
(4 Marks)
(3 Marks)
(3 Marks)

Answer :

Final answer:

The answer outlines the steps for fault finding in electrical machines, types of DC compound motors, electrical tests for transformers, basic parts of DC machines, and starting systems for generators. Each section provides relevant details to enhance understanding. This comprehensive overview assists in grasping key concepts in electrical engineering.


Explanation:

Steps of Fault Finding in Electrical Components

When addressing faults in electrical machines, the following four steps are typically followed:

  1. Visual Inspection: Check for obvious signs of damage or wear.
  2. Testing: Use multimeters and other diagnostic tools to measure electrical parameters.
  3. Isolation: Determine which component is malfunctioning by isolating it from the circuit.
  4. Repair or Replace: Fix the faulty component or replace it as necessary.

Types of DC Compound Motors

Three common types of DC compound motors include:

  • Short-Shunt Compound Motor: Series field connected across the armature only.
  • Long-Shunt Compound Motor: Series field connected across the entire supply voltage.
  • Separately Excited Compound Motor: Series fields are fed from a separate source.

Electrical Tests Before Transformer Installation

Four crucial electrical tests that should be performed on a transformer prior to installation are:

  1. Insulation Resistance Test: To ensure insulation integrity.
  2. Winding Resistance Test: To check for any possible manufacturing defects.
  3. Turns Ratio Test: To verify that the transformers are constructed properly.
  4. Power Factor Test: To assess the quality of the insulation and its ability to function under load.

Basic Parts of DC Machines

The three basic parts of DC machines include:

  • Stator: The stationary part that creates a magnetic field.
  • Rotor: The rotating part also known as the armature.
  • Commutator: A mechanical switch that reverses the current direction.

Generator Starting Systems

Three common starting systems for generators are:

  • Manual Start: Requires manual operation to start.
  • Battery Start: Uses a battery to initiate the engine.
  • Automatic Start: Starts automatically under certain conditions, such as when power fails.

Learn more about Electrical Engineering here:

https://brainly.com/question/36767005


Thanks for taking the time to read 8 Electrical machines must undergo scheduled repair and maintenance List four steps of fault finding in electrical components and equipment 9 State three types of. We hope the insights shared have been valuable and enhanced your understanding of the topic. Don�t hesitate to browse our website for more informative and engaging content!

Rewritten by : Barada