Power Mech Projects Interview Questions, Process, and Tips

My experience in Power plant Rotary equipment.. Maintenance.

Q1. Rotary equipment Maintenance.
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Q1. About boiler operation
Ans. Details of Startup and shutdown procedure. Emergency handling and coal classification.
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Q2. Boiler efficiency and how to overcome the factors affecting efficiency
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Boiler efficiency is the measure of how effectively a boiler converts fuel into steam. Factors affecting efficiency can be overcome by proper maintenance and optimization.
• Regular cleaning and maintenance of the boiler to remove soot and scale buildup

• Optimizing combustion by adjusting air-to-fuel ratio and ensuring proper fuel atomization

• Insulating boiler components to minimize heat loss

• Using economizers to recover wast...read more
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Q1. What is the definition of Lathe?
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A lathe is a machine tool that rotates a workpiece about an axis of rotation to perform various operations such as cutting, sanding, drilling, knurling, or deformation.
• Lathe is used to shape and cut materials such as wood, metal, and plastic.

• It rotates the workpiece on its axis and a cutting tool is applied to the workpiece to remove material.

• Lathe can perform various operations such as turning, facing, drilling, borin...read more
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Q2. What is the Boiler Drum? & how it's work
Ans. 
Boiler drum is a cylindrical container which is used to store water and steam produced in a boiler.
• It is a vital component of a boiler system.

• It is usually made of steel and is located at the top of the boiler.

• It acts as a reservoir of water/steam and helps to separate steam from water.

• It also helps to regulate the pressure and temperature of the steam.

• The level of water in the drum is maintained by a feedwater control...read more
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Q1. Mechanical technician
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Q2. Mechanical technician with dishal work turbine work
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Q1. Sometime turbine work
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Q2. Turbine work sometime
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Q1. Mechanical technician
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Q1. All type contractors in use electrical panel
Ans. 
Electrical panels can be used by various types of contractors.
• Electrical contractors are the most common type of contractors who use electrical panels.

• General contractors may also use electrical panels for specific projects.

• HVAC contractors may require electrical panels for their heating and cooling systems.

• Plumbing contractors may need electrical panels for water heaters or pumps.

• Fire protection contractors may use el...read more
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Q2. All type MCB in use panel
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Various types of MCBs are used in the panel.
• Type B MCB for general purpose circuits

• Type C MCB for circuits with inductive loads

• Type D MCB for circuits with high inrush currents

• Type K MCB for circuits with high inrush currents and motors

• Type Z MCB for circuits with DC components

• Type F MCB for circuits with sensitive equipment

• Type G MCB for circuits with surge protection

• Type L MCB for lighting circuits
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Q3. Difference in AC and DC current
Ans. 
AC current changes direction periodically while DC current flows in one direction only.
• AC current is used in household appliances while DC current is used in batteries and electronic devices.

• AC current can be easily transformed into different voltages using a transformer while DC current cannot.

• AC current is more dangerous to humans than DC current because it can cause muscle contractions.

• DC current is more efficient f...read more
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Q4. Definition of voltage
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Voltage is the measure of electric potential difference between two points in a circuit.
• Voltage is measured in volts (V).

• It is the force that drives electric current through a circuit.

• Voltage can be positive or negative depending on the direction of the current flow.

• A battery provides a voltage difference between its terminals to power a circuit.

• Voltage drop occurs when there is a decrease in voltage along a circuit du
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Q1. How many find the fault
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The question is unclear. Please provide more context.
• Please provide more information about the fault.

• Are you asking about fault-finding techniques or the number of people required to find a fault?

• Without more context, it is difficult to provide a specific answer.
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Q2. What is this Transformer safety parts
Ans. 
Transformer safety parts include fuses, circuit breakers, and grounding systems.
• Fuses protect against overcurrent and short circuits.

• Circuit breakers protect against overloads and faults.

• Grounding systems prevent electrical shock and protect equipment.

• Other safety parts may include temperature sensors and pressure relief devices.
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Q3. Why use capacitor in working
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Capacitors are used to store and release electrical energy in circuits.
• Capacitors can filter out noise and stabilize voltage in power supplies.

• They can also be used in timing circuits and oscillators.

• Capacitors are commonly used in audio equipment to filter out unwanted frequencies.

• They can also be used in electric motors to improve power factor and efficiency.

• Capacitors are essential components in electronic devices a
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Q4. What Is the sunt relay and use
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A sun t relay is a type of time-delay relay used in electrical systems.
• It is used to control the operation of a circuit based on a time delay.

• It is commonly used in lighting systems to delay turning on or off.

• It can also be used in motor control circuits to prevent damage from sudden power surges.

• The delay time can be adjusted to suit the specific needs of the circuit.

• It works by using a small current to charge a capac...read more
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Q1. Many major under voltage
Ans. 
Under voltage can cause major electrical problems.
• Under voltage can cause equipment damage and failure.

• It can also lead to power outages and disruptions.

• Proper monitoring and maintenance can prevent under voltage issues.

• Examples of under voltage problems include brownouts and voltage sags.
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Q1. What are the major parts in power transformer?
Ans. 
The major parts in a power transformer include the core, windings, insulation, cooling system, and tap changer.
• Core: Provides a path for magnetic flux and is usually made of laminated steel sheets.

• Windings: Consist of primary and secondary coils that transfer electrical energy.

• Insulation: Prevents electrical leakage and ensures safety.

• Cooling System: Keeps the transformer within operating temperature limits, commonly u...read more
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Q1. What do you want to switch ?
Ans. 
I want to switch electrical circuits and devices.
• Switching electrical circuits to control the flow of electricity.

• Switching electrical devices on or off.

• Switching between different power sources.

• Switching between different modes or settings of electrical equipment.

• Switching between different electrical connections or configurations.
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