DAR Engineering Interview Questions, Process, and Tips for Experienced

Hard work versus smart work.

Q1. Why power plug earth wire is bigger in size?
Ans. 
The power plug earth wire is bigger in size to ensure safety and prevent electrical shocks.
• The earth wire provides a path for the current to flow in case of a fault or short circuit.

• A larger wire size reduces resistance and allows for the safe dissipation of excess current.

• It helps to protect individuals and equipment from electric shock hazards.

• The earth wire is connected to the ground, which acts as a reference point...read more
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Q2. Which conductor of same size will take larger current Al or Cu?
Ans. 
Copper (Cu) conductor will take larger current than Aluminum (Al) conductor of the same size.
• Copper has a higher electrical conductivity than Aluminum.

• Copper has a lower resistivity than Aluminum.

• Copper has better thermal conductivity than Aluminum.

• Copper is more commonly used in high-current applications.

• Aluminum is often used in overhead power transmission lines due to its lighter weight.
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Q3. What is pulse width modulation in VFD?
Ans. 
Pulse width modulation (PWM) is a technique used in VFD to control the speed of the motor by adjusting the width of the pulses of voltage supplied to the motor.
• PWM is a method of controlling the amount of power delivered to a load without changing the voltage level.

• In VFD, PWM is used to control the speed of the motor by varying the width of the pulses of voltage supplied to the motor.

• The width of the pulses is control...read more
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Q1. Purely based on the resume
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Q2. Majorly on Earthing systems, Lightning Protection, softwares, Lighting calculations,Standards
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Q1. Resume based - General Introducion and Walk through
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Q1. Resume based - asked what exactly was my contribution to various projects
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Revit tool test and questions related to BIM

Q1. Lighting design
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Q2. Generator size and transformer size
Ans. 
Generator size and transformer size are determined based on the power requirements and load characteristics of the system.
• Generator size is determined by the power requirements of the system, taking into account factors such as peak load, average load, and efficiency.

• Transformer size is determined by the voltage and current requirements of the system, as well as the power factor and impedance of the load.

• It is importan...read more
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Q1. About youself? Role and responsibilities? why are you interested?
Ans. 
I am an experienced Electrical Engineer with a passion for designing and implementing innovative solutions.
• I have a strong background in electrical engineering, with a focus on power systems and control systems.

• I have successfully designed and implemented electrical systems for various projects, including commercial buildings and industrial plants.

• I am skilled in using CAD software for electrical design and have experi...read more
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Q1. About yourself? Role and responsibilities? day to day site work? what do u know about bechtel? Electrical safety? Drawing details?shop drawing? LOTO system? NC for quality and safety? Earthing system? powe...read more
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Q1. Documents? Current base salary? Expected base salary? Tentative date of joining?
Ans. 
I can provide the required documents and discuss salary and joining details.
• I can provide all necessary documents such as resume, certifications, and transcripts.

• My current base salary is $X per year.

• I expect a base salary in the range of $Y to $Z per year.

• I am available to join within X weeks/months.

• I can discuss further details during the interview.
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Q1. Provide SLD to identify different symbols
Ans. 
Single Line Diagram (SLD) is used to identify different symbols in electrical engineering.
• SLD is a simplified representation of a power system using various symbols to represent different components.

• Common symbols in SLD include transformers, circuit breakers, switches, motors, generators, etc.

• Each symbol in SLD has a specific meaning and helps in understanding the layout of the electrical system.

• Color coding and label...read more
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Q2. Switchgear selection process
Ans. 
Switchgear selection process involves evaluating electrical requirements, environmental conditions, and safety standards to choose the appropriate equipment.
• Evaluate electrical requirements such as voltage, current, and fault levels

• Consider environmental conditions like temperature, humidity, and altitude

• Ensure compliance with safety standards such as ANSI, IEEE, and IEC

• Select the appropriate type of switchgear based o...read more
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Q1. How many years of experience in Industrial Architecture?
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Q2. Total of 14 years of experience including major Industrial project at Jamnagar on architectural as well as interior from concept to execution for almost more than 3 years, involving not only plant building...read more
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Q1. Have you worked on sustainable projects in past?
Ans. Sustainability a then new concept was always on top of the wish list then when they catered to efficient use of space, energy, materials to get maximum benefit to make users life better. Most of industrial projects aimed at sustainable practice where ROI was envisaged on on all but some parameters like air conditioning, light, ventilation to reduce traditional energy usage.
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