NMDC Limited Junior Engineer Electrical Interview Questions and Answers

Q1. What are the Self motor
Ans. 
Self motor is not a commonly used term in electrical engineering.
• It is possible that the interviewer meant to ask about self-starting motors, which are motors that can start without external assistance.

• Another possibility is that they were referring to self-excited motors, which generate their own magnetic field without the need for a separate excitation source.

• It is important to clarify the question with the interview
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Q2. What are thae Altnater
Ans. 
Alternators are electrical generators that convert mechanical energy into electrical energy.
• Alternators are commonly used in vehicles to charge the battery and power the electrical system.

• They work by using a rotating magnetic field to induce an electrical current in a stationary coil of wire.

• Alternators are more efficient and reliable than traditional generators.

• They are also smaller and lighter, making them ideal for...read more
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Q3. What are the Battery
Ans. 
Batteries are devices that store chemical energy and convert it into electrical energy.
• Batteries come in various sizes and types, including alkaline, lithium-ion, and lead-acid.

• They are commonly used in electronic devices, vehicles, and backup power systems.

• Batteries have a positive and negative terminal, and the flow of electrons between them creates an electrical current.

• The capacity of a battery is measured in amper
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Q1. Plc and scada analog Electronics
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Q2. Transmission and destitution
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Q3. Electrical machine
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Q4. Basic of Electrical engineering
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Q5. Digital electronics
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Q6. Electrical instrument and measurement
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Q1. Electrical Job Specification
Ans. 
Electrical engineers design, develop, test, and supervise the manufacturing of electrical equipment.
• Design electrical systems and products

• Test equipment and troubleshoot issues

• Supervise the manufacturing process

• Stay up-to-date with industry trends and advancements
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Q2. Relay setting, transformer details, vfd parameter setting.
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Aptitude test b.e electronics level

Q1. Dol and star delta wiring scheme
Ans. 
DOL (Direct-On-Line) and star delta are two different wiring schemes used in electrical engineering for starting induction motors.
• DOL wiring directly connects the motor to the power supply for starting, while star delta wiring initially starts the motor in star configuration and then switches to delta configuration for running.

• DOL wiring is simpler and cheaper but causes high starting current, while star delta wiring r...read more
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Q1. Electrical equipment and power supply
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Q2. Why do electrical engineer?
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Q1. What is different parameters in Siemens controller
Ans. 
Siemens controllers have different parameters for various applications.
• Siemens controllers have different parameters for motion control, temperature control, and process control.

• Parameters for motion control include acceleration, deceleration, and maximum velocity.

• Parameters for temperature control include setpoint, proportional band, and integral time.

• Parameters for process control include setpoint, deadband, and gain...read more
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Q2. What is different parameter in fanuk
Ans. 
Fanuc has different parameters for various functions such as motion control, spindle control, and tool management.
• Fanuc parameters are used to control various functions such as motion control, spindle control, and tool management.

• Parameters can be set to adjust the speed, acceleration, and deceleration of the machine.

• Fanuc parameters can also be used to set up alarms and diagnostic messages.

• Examples of Fanuc parameters...read more
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Q3. What types of controller in our company
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Q4. Which type of use plc
Ans. 
PLCs are used in various industries for automation and control purposes.
• PLCs are commonly used in manufacturing industries for controlling assembly lines and machines.

• They are also used in the automotive industry for controlling robotic arms and conveyor belts.

• PLCs are used in the food and beverage industry for controlling mixing and packaging machines.

• They are used in the energy sector for controlling power plants and...read more
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Q5. Which type of use vfd
Ans. 
VFDs are used to control the speed of AC motors in various applications.
• VFDs are commonly used in HVAC systems to control the speed of fans and pumps.

• They are also used in industrial applications to control conveyor belts and other machinery.

• VFDs can improve energy efficiency and reduce wear and tear on equipment.

• They are often used in renewable energy systems to control the speed of wind turbines and solar panels.

• VFDs...read more
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Q6. Which type of machine
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Q1. What d. C cirent
Ans. 
DC circuit refers to an electric circuit where the current flows in one direction only.
• DC stands for direct current, which means the flow of electric charge is uni-directional.

• DC circuits are commonly used in electronics, batteries, and power supplies.

• Examples of DC devices include flashlights, cell phones, and solar panels.
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Q2. Auto electrician
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