B5 Plus Assistant Manager Electrical Maintenance Interview Questions and Answers

Q1. What is the use of lubricant in roling mill
Ans. 
Lubricant in rolling mills reduces friction between metal surfaces, prevents wear and tear, and improves efficiency.
• Lubricant reduces friction between metal surfaces in rolling mills

• Prevents wear and tear on machinery

• Improves efficiency by reducing energy consumption

• Helps in cooling the metal during the rolling process

• Examples: oil-based lubricants, grease, graphite-based lubricants
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Q2. What are the major cause of roll broken
Ans. 
The major causes of roll breakage in maintenance engineering include material defects, improper setup, excessive tension, and foreign objects.
• Material defects such as weak spots or impurities can weaken the roll and lead to breakage.

• Improper setup or alignment of the roll can cause uneven stress distribution and eventual breakage.

• Excessive tension on the roll can exceed its load-bearing capacity and cause it to break.

• F...read more
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Q3. What is cause of rolling mill bearing broken
Ans. 
The main causes of rolling mill bearing breakage are lack of lubrication, contamination, overloading, and misalignment.
• Lack of lubrication can lead to increased friction and heat generation, causing the bearing to fail prematurely.

• Contamination from dirt, debris, or water can accelerate wear and tear on the bearing surfaces.

• Overloading the bearing beyond its capacity can cause excessive stress and lead to failure.

• Misal...read more
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Q4. Compressor overhead cause
Ans. 
Compressor overhead cause can be due to various factors such as high discharge pressure, low suction pressure, dirty filters, or worn out components.
• High discharge pressure can lead to overheating of the compressor.

• Low suction pressure can cause the compressor to work harder and overheat.

• Dirty filters can restrict airflow and cause the compressor to overheat.

• Worn out components such as valves or seals can lead to ineff
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Q5. How to measure wire rope condition
Ans. 
Wire rope condition can be measured by visual inspection, non-destructive testing, and load testing.
• Visual inspection for signs of wear, corrosion, broken wires, and distortion

• Non-destructive testing methods like magnetic particle inspection, ultrasonic testing, and dye penetrant testing

• Load testing to assess the strength and integrity of the wire rope under working conditions
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Q6. Lubricant chemicals property
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Q1. Machine transmission distribution
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Q2. Electric generation
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Q3. Electric measurement
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Q1. Pump main tenec
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Q2. Machine maintenance
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Q1. Machanical work
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Q2. Crean maintenance
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Q1. Ptm all parts Reapair
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Q2. Bearing, Neumatic cyclender
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Q3. Hydrolic cyclender
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Q4. Wheel reapair, Gear box
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Q1. What is safety, What is Hazards.
Ans. 
Safety refers to measures taken to prevent accidents and injuries, while hazards are potential sources of harm or danger.
• Safety involves implementing protocols and procedures to minimize risks in the workplace

• Hazards are factors or situations that have the potential to cause harm

• Examples of hazards include electrical hazards, chemical hazards, and ergonomic hazards

• Safety measures may include training employees on prope...read more
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Q2. What is predictive maintenance.
Ans. 
Predictive maintenance is a proactive maintenance strategy that uses data analysis to predict when equipment failure is likely to occur.
• Uses data analysis to predict when equipment failure is likely to occur

• Helps in scheduling maintenance activities before a breakdown occurs

• Reduces downtime and increases equipment reliability

• Examples include vibration analysis, oil analysis, and thermography
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Common aptitude test

Q1. Electrical technical questions
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Q1. Personal details
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Q1. What is your favourite subject?
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Q2. Different types of starter
Ans. 
Starters are used to control the starting and stopping of motors. Different types of starters are used based on the motor's power rating and application.
• Direct On-Line (DOL) Starter

• Star-Delta Starter

• Auto Transformer Starter

• Soft Starter

• Variable Frequency Drive (VFD) Starter
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Q3. Parallel operations of transformer
Ans. 
Parallel operation of transformers refers to connecting two or more transformers with the same voltage ratio and frequency to supply a common load.
• Parallel operation increases the capacity of the system and provides redundancy.

• The transformers must have the same voltage ratio, impedance, and phase angle.

• Proper synchronization is necessary to avoid circulating currents.

• Parallel operation can be achieved by using a commo...read more
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Q1. How are home load of power plant received
Ans. 
Home load of a power plant is received through a distribution network.
• Home load is received from the power plant through a distribution network.

• The power plant generates electricity and sends it to a substation.

• The substation then distributes the electricity to homes through power lines.

• The distribution network ensures that the electricity reaches each home efficiently.

• Examples of distribution networks include overhead
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Q2. What is black out condition?
Ans. 
A blackout condition refers to a complete loss of electrical power in a specific area or across a larger region.
• Blackouts can be caused by various factors such as equipment failure, severe weather conditions, or intentional power cuts.

• During a blackout, all electrical devices and systems dependent on electricity cease to function.

• Blackouts can last for a few seconds, minutes, hours, or even days depending on the cause ...read more
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