| Electrician ITI

Core skills enhance knowledge, Analytical ability, problem solving ability, understanding or comprehending drawings & designs and also enriches on scientific principles. At the same time it creates the base for achieving Hard skills. To carry out any skill related task the know how about basic science & related calculation is essential as it helps in scientific way of executing the task.

Read more about Workshop Calculation and Science

A Full Wave Center Tap Rectifier is used to convert AC into DC using two diodes and a center-tapped transformer. It utilizes both half cycles of the AC input, producing a pulsating DC output. CRO is used to observe input and output waveforms.

Read more about Make a circuit of a Full Wave Center Tap Rectifier on a breadboard. Observe the waveforms on the C.R.O. (Cathode Ray Oscilloscope) at various points and record their values.

Testing of house wiring is essential to ensure safety and proper functioning of electrical installations. A Megger is used to detect insulation faults such as leakage, while continuity tests help identify open circuits and short circuits.

Read more about Test the electrical house wiring for open circuit, short circuit, and leakage with the help of a Megger.

General concept of rotating electrical machines. Principle of DC generator. Use of Armature, Field Coil, Polarity, Yoke, Cooling Fan, Commutator, slip ring and Brushes, Laminated core etc. E.M.F. equation Separately excited and self excited generators. Series, shunt and compound generators.
Armature reaction, Commutation, inter poles and connection of inter poles. Parallel Operation of DC Generators. Load characteristics of DC generators. Application, losses & efficiency of DC Generators. Routine & maintenance.
Principle and types of DC motor.

Read more about Electrician T3

House wiring is an essential part of electrical installation used to distribute electrical power safely to different loads. It includes protection devices, control switches, and proper earthing to ensure safety and reliability.

Read more about Assemble house wiring including earthing for a 1-phase energy meter, MCB, ceiling fan, tube light, three-pin socket, and a lamp operated from two different positions. Demonstrate the basic functional study of the components used in house wiring.

This circuit is used to control two exhaust fans in such a way that only one fan operates at a time or both remain OFF. This is achieved using proper switch arrangement to avoid simultaneous operation.

Read more about Take two exhaust fans and perform wiring in such a way that only one fan is ON at a time or both remain OFF using appropriate switches.

Determination of Efficiency and Performance Characteristics of D.C. Shunt Motor

Trade: Electrician | Semester: II

Question: Determine the efficiency of a D.C. shunt motor and plot its performance characteristics.

Introduction

A D.C. shunt motor is widely used due to its constant speed characteristics. Determining its efficiency and performance characteristics is essential to evaluate its performance under different load conditions.

Read more about Determine the efficiency of a D.C. shunt motor and plot its performance characteristics.

Insulation resistance testing is an important method to check the condition of electrical cables. A Megger is used to measure high resistance and ensure proper insulation between conductors and earth.

Read more about Test the insulation resistance of the given electric cable using a Megger.

A shackle insulator is used in low voltage distribution lines at intermediate poles to support and insulate conductors. Binding from the neck ensures proper fixing and prevents conductor displacement.

Read more about Bind a shackle insulator from its neck for intermediate pole conductor.

A pin insulator is used in overhead lines to support and insulate conductors. Binding from the top groove ensures proper fixing of the conductor and prevents it from slipping.

Read more about Bind a pin insulator from the top groove.

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ITI Trade: Electrician

Course Overview

Course Overview

Workshop Calculation and Science

Make a circuit of a Full Wave Center Tap Rectifier on a breadboard. Observe the waveforms on the C.R.O. (Cathode Ray Oscilloscope) at various points and record their values.

Test the electrical house wiring for open circuit, short circuit, and leakage with the help of a Megger.

Electrician T3

Assemble house wiring including earthing for a 1-phase energy meter, MCB, ceiling fan, tube light, three-pin socket, and a lamp operated from two different positions. Demonstrate the basic functional study of the components used in house wiring.

Take two exhaust fans and perform wiring in such a way that only one fan is ON at a time or both remain OFF using appropriate switches.

Determine the efficiency of a D.C. shunt motor and plot its performance characteristics.

Determination of Efficiency and Performance Characteristics of D.C. Shunt Motor

Introduction

Test the insulation resistance of the given electric cable using a Megger.

Bind a shackle insulator from its neck for intermediate pole conductor.

Bind a pin insulator from the top groove.

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