🛡️ Safety Rules and Safety Signs for Electricians

Safety is the most important part of an electrician's work. Working with electricity can be dangerous, so following proper safety rules and understanding safety signs is necessary to prevent accidents and protect lives.

⚡ Scope of the Electrician Trade

The Electrician Trade is one of the most important and job-oriented trades in the ITI sector. It focuses on electrical wiring, equipment maintenance, power systems, and safety procedures.

🔧 What an Electrician Learns

An electrician trainee learns:

⚡ ITI इलेक्ट्रीशियन ट्रेड MCQs (भाग - 1)

❓ 1. प्रतिरोध R के एक तार की लम्बाई तथा क्रॉस-सेक्शन दोनों दोगुणा हो जाते हैं, तो उसका प्रतिरोध क्या होगा?

• 0.5 R

• R ✅

• 2R

• Visit various sections of the institutes and location of electrical installations. 
•  Identify safety symbols and hazards. 
• Preventive measures for electrical accidents and practice steps to be taken in such accidents. 
•  Practice safe methods of fire fighting in case of electrical fire. 
• Use of fire extinguishers. 
•  Practice elementary first aid. 
•  Rescue a person and practice artificial respiration. 
•  Disposal procedure of waste materials. 
• Use of personal pr

• Determine the value of resistance by colour code and identify types.
• Test active and passive electronic components and its applications. 
• Determine V-I characteristics of semiconductor diode. 
• Construct half wave, full wave and bridge rectifiers using semiconductor diode. 
• Check transistors for their functioning by identifying its type and terminals. 
• Bias the transistor and determine its characteristics. 
• Use transistor as an electronic switch and series voltage regulator. 
• Operate and set the requir

•  Use of various types of cells. 
•  Practice on grouping of cells for specified voltage and current under different conditions and care.  
•  Prepare and practice on battery charging and details of charging circuit. 
•  Practice on routine, care/ maintenance and testing of batteries. 
•  Determine the number of solar cells in series / parallel for given power requirement.

• Scope of the electrician trade. Safety rules and safety signs. Types and working of fire extinguishers. 
• First aid safety practice. Hazard identification and prevention. Personal safety and factory safety. Response to emergencies e.g. power failure, system failure and fire etc.
• Concept of Standards and advantages of BIS/ISI. Trade tools specifications. Introduction to National Electrical Code-2011. 
• Allied trades: Introduction to fitting tools, safety precautions.

• 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.

• Identify terminals, parts and connections of different types of DC machines.
• Measure field and armature resistance of DC machines.
• Determine build up voltage of DC shunt generator with varying field excitation and performance analysis on load.
• Test for continuity and insulation resistance of DC machine.
• Start, run and reverse direction of rotation of DC series, shunt and compound motors.
• Perform no load and load test and determine characteristics of series and shunt generators.

• Chemical effect of electric current and Laws of electrolysis. Explanation of Anodes and cathodes. Types of cells, advantages / disadvantages and their applications. Lead acid cell; Principle of operation and components. Types of battery charging, Safety precautions, test equipment and maintenance. Basic principles of Electro-plating and cathodic protection Grouping of cells for specified voltage and current. Principle and operation of solar cell. 
• I.E. rules on electrical wiring. Types of domestic and industrial wirings. Study of wiring accessories e.g.