Midmac Contracting Co. WLL Interview Questions and Answers

Q1. What is the hydraulic gradient line?
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Q2. What are the methods for managing floods?
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Q3. What is prestress concrete?
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Q4. What is Flood Wall?
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Q1. What is Total Float (TF) and Free Float(FF)?
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Q2. What is your understanding of Earned Value Analysis (EVA)?
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Q3. What are the key aspects to consider in delay analysis?
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Q4. How would you rate your proficiency in P6/MSP on a scale of 1 to 10?
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Q5. What are the different types of contracts?
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Basic topics like India before covid and after covid, Global warming, Educational System in india

Q1. What is transformer?
Ans. 
A transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.
• Consists of two coils of wire, known as primary and secondary coils

• Primary coil receives electrical energy and induces a magnetic field

• Magnetic field then induces a voltage in the secondary coil

• Used to step up or step down voltage levels in electrical systems
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Q2. What are the types of Rectifiers?
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Types of rectifiers include half-wave, full-wave, and bridge rectifiers.
• Half-wave rectifier only allows one half of the AC input waveform to pass through

• Full-wave rectifier allows both halves of the AC input waveform to pass through

• Bridge rectifier uses four diodes to rectify the AC input waveform

• Examples include diode rectifiers and semiconductor rectifiers
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Q3. Difference between Synchronous and induction motor
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Synchronous motors have constant speed and require external excitation, while induction motors have variable speed and are self-starting.
• Synchronous motors have a constant speed determined by the frequency of the power supply.

• Induction motors have variable speed depending on the load.

• Synchronous motors require external excitation to generate a magnetic field, while induction motors are self-starting.

• Synchronous motors ...read more
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Q4. What is Ohms law?
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Ohm's law states that the current flowing through a conductor is directly proportional to the voltage across it, and inversely proportional to the resistance of the conductor.
• Ohm's law is represented by the formula: V = I * R, where V is voltage, I is current, and R is resistance.

• It helps in calculating the relationship between voltage, current, and resistance in an electrical circuit.

• For example, if a circuit has a vo...read more
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Q1. Will you ready to go to abroad after 5 years?
Ans. 
Yes, I am open to the possibility of going abroad after 5 years for career advancement and new experiences.
• I am open to exploring international opportunities for career growth.

• I believe working abroad can provide valuable experiences and broaden my perspective.

• I am willing to adapt to new cultures and environments for professional development.
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Q2. Why you have not choose higher education
Ans. 
I chose to start working in the electrical field to gain practical experience and skills rather than pursuing higher education.
• Prefer hands-on learning over theoretical education

• Opportunity to gain real-world experience in the field

• Financial constraints prevented pursuing higher education

• Passionate about electrical work and wanted to start career sooner
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Q3. Family details and Occupation
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Q1. What is different between control circuit drawing and power circuit drawing
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Q2. Megar testing & phase rotation
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Simple aptitude questions

This is a shortlisting round, and many technically knowledgeable individuals did not qualify for this stage.

Q1. Which flow system is more effective: countercurrent flow or concurrent flow, and what are the reasons for this?
Ans. 
Countercurrent flow is more effective due to increased concentration gradient and better utilization of resources.
• Countercurrent flow allows for a greater concentration gradient between the two fluids, leading to more efficient mass transfer.

• Countercurrent flow also allows for better utilization of resources as the fluids are in contact for a longer period of time.

• Concurrent flow, on the other hand, results in a lower ...read more
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Q2. What is the procedure for designing a heat exchanger?
Ans. 
The procedure for designing a heat exchanger involves determining heat transfer requirements, selecting appropriate materials, designing the geometry, and analyzing performance.
• Determine the heat transfer requirements based on the fluids involved, flow rates, temperatures, and desired heat transfer rate.

• Select appropriate materials for the heat exchanger based on compatibility with the fluids, operating conditions, and...read more
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Regarding RDSS Projects

Q1. Regarding BOQ of 11 KV & 33 KV Feeder Bifurcation
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Q2. Regarding Installation of DTR Structure with transformer
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Q3. Regarding 33/11 KV Augmented substation and installation of Power Transformer
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Q1. Brief introduction about your self.
Ans. 
I am a highly experienced Piping Engineer with a strong background in designing and implementing piping systems for various industries.
• Over 10 years of experience in piping engineering

• Proficient in using CAD software for designing piping layouts

• Extensive knowledge of industry standards and regulations

• Managed multiple projects from conception to completion

• Strong problem-solving skills in resolving complex piping issues
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Q2. How to calculate pipe thickness
Ans. 
Pipe thickness can be calculated using various methods such as ASME B31.3 code, API 570 code, and engineering calculations.
• Calculate based on pressure and temperature requirements specified in ASME B31.3 code

• Use API 570 code for calculating minimum required thickness for piping in-service

• Perform engineering calculations considering factors like material properties, design pressure, and corrosion allowance

• Consider addit...read more
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Q1. What is salary expectation
Ans. 
My salary expectations are in line with industry standards for a Piping Engineer with my level of experience and qualifications.
• Research industry standards for Piping Engineer salaries in the specific location

• Consider my level of experience and qualifications when determining salary expectations

• Be prepared to negotiate based on the overall compensation package offered
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Q2. Brief family background
Ans. 
I come from a close-knit family with a diverse background and strong values.
• My parents are both professionals in the engineering field.

• I have two siblings, one of whom is studying medicine.

• We often gather for family dinners and celebrate special occasions together.
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