Megha Engineering & Infrastructures Mechanical Foreman Interview Questions and Answers

Normal introduction and interview

Q1. Type of electrical motor
Ans. 
There are various types of electrical motors including AC motors, DC motors, synchronous motors, and induction motors.
• AC motors: commonly used in household appliances and industrial applications

• DC motors: used in applications where speed control is important, such as in electric vehicles

• Synchronous motors: used in applications where precise speed control is required, such as in clocks and timers

• Induction motors: widely...read more
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Q2. 3 phase induction motor starter
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Q3. Protection of transformer
Ans. 
Protection of transformer involves measures to prevent damage from overcurrent, overvoltage, and overheating.
• Use overcurrent protection devices such as fuses and circuit breakers to prevent damage from excessive current flow.

• Install overvoltage protection devices like surge arresters to safeguard against voltage spikes.

• Implement temperature monitoring systems to prevent overheating, such as thermal sensors and cooling ...read more
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Q4. ACB VCB maintenance
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Q5. Star delta connection
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Q1. Electrical maintenance kese kar te ho
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Q1. What is diesel generator, transformer & HVAC
Ans. 
Diesel generator is a backup power source using diesel fuel, transformer is a device that transfers electrical energy between circuits, and HVAC is a system for heating, ventilation, and air conditioning.
• Diesel generator: provides backup power using diesel fuel, commonly used in areas with frequent power outages

• Transformer: transfers electrical energy between circuits, stepping up or down voltage levels as needed

• HVAC: ...read more
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Q2. Operation & maintenance LT pannel & HT pannel
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Q3. What is fire fighting system
Ans. 
A fire fighting system is a set of equipment and procedures designed to detect, control, and extinguish fires in a building or area.
• Includes fire alarms, sprinkler systems, fire extinguishers, and fire hoses

• May also involve fire suppression systems like foam or gas

• Designed to protect lives and property in the event of a fire

• Regular maintenance and testing are crucial to ensure effectiveness
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Q4. What is DM plant
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DM plant stands for Demineralization plant, used to remove minerals and salts from water.
• DM plant is used in industries to produce demineralized water for various processes.

• It consists of ion exchange resins to remove minerals like calcium, magnesium, and salts from water.

• The process involves passing water through cation and anion exchange columns to remove ions.

• DM plant is essential in power plants, pharmaceutical ind...read more
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Q5. What is acb,vcb,mccb, mcb
Ans. 
ACB, VCB, MCCB, MCB are types of circuit breakers used in electrical systems.
• ACB stands for Air Circuit Breaker, used for high voltage applications.

• VCB stands for Vacuum Circuit Breaker, used for medium voltage applications.

• MCCB stands for Molded Case Circuit Breaker, used for low voltage applications.

• MCB stands for Miniature Circuit Breaker, used for residential and commercial applications.
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Q6. Fire fighting system
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Q7. ACB,VCB,MCCB,MCB,OCB etc
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Q1. Ht motor LT panal and transformer distribution
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Q2. Electrical relative question
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Q1. Motor and panal mcc and transformer
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Q1. Fabrication and ailment erection complite
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Q1. Cable Laying and termination
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Q1. Tell me about yourself (Details if education and career)
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Q2. What all things you have handled till now?
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Q3. What is the criteria to evaluate thickness and length of cable?
Ans. 
Criteria for evaluating cable thickness and length in electrical engineering.
• Consider the current carrying capacity of the cable

• Evaluate the voltage drop over the length of the cable

• Take into account the environmental conditions where the cable will be installed

• Check the insulation material and its thickness

• Ensure the cable length is sufficient for the intended application
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Q4. How many people (workmen) needed to compoete a 100km traywork in 20days? In cable vault? In piperack?
Ans. 
The number of workmen needed depends on the size and complexity of the traywork, cable vault, and piperack.
• The number of workmen needed for a 100km traywork in 20 days will vary based on factors such as terrain, weather conditions, and equipment availability.

• For a cable vault, the number of workmen required will depend on the size of the vault, the type of cables being installed, and any specific safety regulations tha...read more
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Q5. What are earthling procedures? What is earthgrid?
Ans. 
Earthing procedures involve connecting electrical systems to the ground to prevent electric shock and ensure safety. Earthgrid is a network of interconnected grounding systems.
• Earthing procedures involve connecting electrical systems to the ground using conductors like copper rods or plates.

• The purpose of earthing is to prevent electric shock by providing a path for fault currents to flow safely into the ground.

• Earthgr...read more
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Q6. Explain cable dressing.
Ans. 
Cable dressing is the process of organizing and securing cables in a neat and efficient manner to improve safety and aesthetics.
• Cable dressing involves arranging cables in a way that minimizes interference and maximizes airflow.

• It helps in identifying and tracing cables easily for maintenance or troubleshooting.

• Proper cable dressing can prevent cable damage and reduce the risk of electrical hazards.

• Examples of cable dr...read more
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Q7. Depending on availability of cable tell us what cable you will use fir a specific equipment (load)!
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Q1. Where are you working now?
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Q2. What all facilities you are getting now?
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Q3. What is your current payment? (Griss and inhand)
Ans. 
My current payment is $80,000 annually before taxes and $65,000 after taxes.
• My current annual salary is $80,000 before taxes

• After taxes, my take-home pay is $65,000

• I receive a monthly salary of $6,666.67 before taxes
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Q4. Send me details.
Ans. 
Provide details about a specific topic or project.
• Include background information

• Explain the purpose or goal

• Discuss the methods or techniques used

• Present the results or outcomes

• Highlight any challenges faced and how they were overcome
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