ITI Welder Trade Theory NIMI MCQ Series 1 | NIMI Welder MCQ Question Bank Bharat Skill By Sumit Sir

Summary

In this video, Sumit Sir, an expert in welding, introduces a series of important ITI exam questions related to welding techniques. He covers a variety of topics, including operations to remove burrs from cut plates, the components of tools like files and hammers, safety precautions during welding, and proper equipment handling. Sumit explains the significance of using appropriate tools such as files, hammers, gloves, and clamps to ensure safety and efficiency during welding tasks. Additionally, he discusses the proper usage of gas welding tools, flame types, and cutting machines, providing students with key insights to excel in their ITI exams.

Takeaways

• 😀 Proper techniques are essential for removing burrs from plates after cutting to ensure smooth edges and accurate dimensions.
• 😀 Hand gloves, especially made of leather or thick cotton, are necessary for safety when handling hot materials during welding to prevent burns.
• 😀 The hammer's wedge is an important part, fitted into the handle to provide durability and stability during usage.
• 😀 The face of the hammer is used for striking, and the round head of the hammer is called the 'ball' in technical terminology.
• 😀 When handling thin sheets, safety measures like safety belts and gloves should be used to prevent injuries.
• 😀 The correct size and type of clamps, such as 'C-clamps,' should be used for securing workpieces during welding or cutting to ensure precision and safety.
• 😀 Safety equipment like hand screens should be worn during welding to protect the eyes from intense light and flying sparks.
• 😀 Understanding the types of gas cylinders used in welding (like oxygen and acetylene) is crucial for selecting the right materials for different types of welding tasks.
• 😀 Portable cutting machines improve precision by allowing smooth, even cuts, eliminating issues like uneven hand-cutting in metalwork.
• 😀 Welding flames, including oxidizing, neutral, and carburizing flames, each have specific uses and temperatures, important for achieving desired results in welding tasks.

Q & A

What is the primary objective of removing burrs from a plate after cutting?

The primary objective is to eliminate the excess material (burrs) that remains after cutting a plate, ensuring the edges are smooth and meet a precise 90-degree angle.

What tool is commonly used to remove burrs from a plate after cutting?

A file is typically used to remove burrs from a plate, as it helps smooth the edges and achieve the desired finish.

Why is it unsafe to handle hot metal directly with bare hands after welding?

Handling hot metal directly with bare hands is unsafe because the temperature is extremely high and can cause serious burns. Protective gloves are necessary to prevent injury.

What is the purpose of a Tom C (or Sand C) during welding?

Tom C (also called Sand C) is used to handle hot materials after welding. It helps protect the hands from high temperatures during metal handling.

What part of the hammer absorbs the force when it strikes an object?

The 'wedge' part of the hammer, where the handle is fitted, absorbs the force and helps in transferring it efficiently when striking an object.

What are the different parts of a ball-peen hammer?

The different parts of a ball-peen hammer include the 'face' (flat striking area), 'ball' (rounded part), and 'handle' (wooden or metal part for holding).

How should thin sheets be handled to ensure safety?

Thin sheets should be handled using proper safety measures, such as wearing gloves and using equipment designed for handling large or thin metal plates to avoid injury.

What type of gloves is recommended for welding?

For welding, leather gloves are recommended as they provide better protection from heat, sparks, and potential cuts, compared to fabric gloves.

What is the significance of choosing the correct gas for welding?

The correct gas, such as oxygen and acetylene (C2H2), must be chosen for welding because different gases provide the necessary temperature and stability for the welding process.

How does the flame temperature vary in different welding modes (e.g., neutral, oxidation, carburizing)?

In welding, the temperature of the flame varies based on the mode: the oxidation flame has a temperature range of 2000-2200°C, the neutral flame is around 3200°C, and the carburizing flame can reach up to 3300°C.