J. Kumar Infraprojects Technician Interview Questions and Answers

Q1. Milling Machine operating
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Q2. All operations in machining
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Operations in machining include cutting, drilling, milling, turning, and grinding.
• Cutting involves removing material from a workpiece using a cutting tool.

• Drilling creates holes in a workpiece using a rotating drill bit.

• Milling involves removing material using a rotating cutter.

• Turning involves rotating a workpiece while a cutting tool removes material.

• Grinding uses an abrasive wheel to remove material and create a smo...read more
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Q3. Interviews in hindi language.
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Q1. What are the basic principles of electricity?
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Electricity is the flow of electric charge, governed by principles like voltage, current, resistance, and Ohm's Law.
• Voltage (V): The electric potential difference, measured in volts. Example: A standard household outlet provides 120V.

• Current (I): The flow of electric charge, measured in amperes (A). Example: A light bulb may draw 0.5A.

• Resistance (R): The opposition to current flow, measured in ohms (Ω). Example: A resi...read more
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Q2. Different types of control panels and starters in electrical industries
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Control panels and starters are essential for managing electrical systems in industries, ensuring safety and efficiency.
• Control Panels: Used for monitoring and controlling electrical equipment.

• Motor Starters: Devices that start and stop electric motors safely.

• Types of Control Panels: PLC panels, relay panels, and motor control centers.

• Types of Starters: Direct-on-line (DOL), star-delta, and soft starters.

• Example of Con...read more
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Q1. How does a train run on single phase?
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A train can run on single phase by using a single-phase AC traction system.
• Single-phase AC traction system uses a single-phase supply to power the train's motors.

• The system includes a converter to convert the single-phase AC supply to DC for the motors.

• Examples of trains using single-phase traction systems include light rail systems and some commuter trains.
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Q2. What happens if you change the capacitor wire of a fan?
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Changing the capacitor wire of a fan can lead to malfunctioning of the fan or even damage to the fan motor.
• Incorrect wiring can cause the fan to not work properly or not work at all.

• Mismatched capacitor wire can damage the fan motor.

• It is important to follow the correct wiring diagram when replacing capacitor wires.
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1 hour duration, related financial crisis

Q1. Basic technical questions
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Q2. What is electrical safety?
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Electrical safety refers to practices and precautions taken to prevent electrical hazards and accidents.
• Ensuring all electrical equipment is properly maintained and inspected regularly

• Using appropriate personal protective equipment (PPE) when working with electricity

• Following proper lockout/tagout procedures when working on electrical systems

• Avoiding overloading circuits and using proper grounding techniques

• Training em...read more
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Q3. How to start maintenance work?
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To start maintenance work, first assess the equipment, create a maintenance plan, gather necessary tools and materials, and follow safety protocols.
• Assess the equipment to identify any issues or areas that need maintenance.

• Create a maintenance plan outlining tasks, schedules, and resources needed.

• Gather necessary tools and materials before starting the maintenance work.

• Follow safety protocols to ensure the safety of yo...read more
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Q4. What is tha safety precautions before maintenance?
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Safety precautions before maintenance include proper training, wearing appropriate personal protective equipment, isolating energy sources, and following lockout/tagout procedures.
• Ensure proper training and understanding of maintenance procedures

• Wear appropriate personal protective equipment such as gloves, goggles, and helmets

• Isolate energy sources to prevent accidental startup

• Follow lockout/tagout procedures to ensur...read more
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Q5. Verious types of safety instrument in industry?
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Various types of safety instruments in industry include personal protective equipment, alarms, interlocks, and emergency stop buttons.
• Personal protective equipment (PPE) such as helmets, gloves, and safety goggles

• Alarms for notifying workers of potential hazards or emergencies

• Interlocks to prevent equipment from operating when safety conditions are not met

• Emergency stop buttons for quickly shutting down machinery in ca
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Q1. Basic electrical engineering
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Q2. Electrical all subject
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