Sinai White Portland Cement Co Mechanical Maintenance Engineer Interview Questions and Answers

Q1. Special coding applies for the bearings
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Q1. Is code of Ms pipeline .?
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Q2. What is a micrometre.?
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Q1. What is your name? My name is Angara Raviteja.
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Q2. What are your qualifications? I have completed the Government polytechnic in diploma mechanical engineering.
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Q3. What is MS and SS?
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MS stands for Mild Steel and SS stands for Stainless Steel.
• MS (Mild Steel) is a type of carbon steel with low carbon content and is commonly used in construction.

• SS (Stainless Steel) is a type of steel alloy with a minimum of 10.5% chromium content, known for its corrosion resistance.

• SS is often used in kitchen appliances, surgical instruments, and industrial equipment.

• MS is used in structural applications, automotive
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Q1. What is DOC & mufflers
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DOC stands for Diesel Oxidation Catalyst, a device used to reduce harmful emissions in diesel engines. Mufflers are components that reduce noise produced by the engine.
• DOC is a device used in diesel engines to convert harmful pollutants into less harmful substances.

• Mufflers are components in the exhaust system that reduce noise produced by the engine.

• DOCs are commonly used in vehicles to meet emission standards.

• Muffler...read more
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Q2. What is starting & presser pipe
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Starting & presser pipe is a term used in mechanical engineering to refer to pipes used for starting and pressurizing systems.
• Starting pipe is used to supply initial fluid or gas to start a system

• Presser pipe is used to maintain pressure in a system

• Examples include starting and presser pipes in hydraulic systems or pneumatic systems
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Q1. What means of tyre size
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Tyre size refers to the dimensions of a tire, including width, aspect ratio, and diameter.
• Tyre size is typically expressed as a series of numbers and letters on the sidewall of the tire.

• The first number represents the width of the tire in millimeters.

• The second number is the aspect ratio, which is the height of the tire's cross-section as a percentage of the width.

• The final number is the diameter of the wheel that the ...read more
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Q2. Diffrence between pan mixer and twin shaft mixer
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Pan mixer is a stationary mixer with a single shaft while twin shaft mixer has two horizontal shafts rotating in opposite directions.
• Pan mixer has a single shaft while twin shaft mixer has two horizontal shafts

• Twin shaft mixer provides better mixing efficiency and homogeneity compared to pan mixer

• Pan mixer is suitable for smaller batches while twin shaft mixer is used for larger production volumes
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Technical round and one by one person having questing and forward to answers

Q1. Regarding piping
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Q2. I have done piping also do then
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Q1. Specifiacation of machinery
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Specification of machinery refers to the detailed requirements and characteristics of a machine or equipment.
• Includes dimensions, materials, performance criteria, and safety features

• Should be clearly defined to ensure proper design and functionality

• Examples: maximum load capacity, operating temperature range, power consumption
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Q2. Schedule maintenance interval
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Q1. Basical quotation for machinery maintenance and plant and equipment
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Q2. Plant maintenance
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Q1. Salary discussion
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Q2. Family background
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Q1. What are the Fire NOC conditions
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Fire NOC conditions refer to the requirements set by the fire department for ensuring fire safety in a building or establishment.
• Fire NOC is required before starting any construction or occupancy of a building.

• The building must comply with fire safety regulations such as having fire extinguishers, smoke detectors, and fire alarms installed.

• Regular fire drills and training for occupants are necessary to ensure preparedn...read more
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Q2. Which one is more efficient for railways- 750V DC or 25 KV AC..and why?
Ans. 
25 KV AC is more efficient for railways due to lower energy losses over long distances.
• 25 KV AC is more efficient for long distance transmission as it experiences lower energy losses compared to 750V DC.

• 25 KV AC allows for higher speeds and heavier loads on the railway system.

• 25 KV AC is the standard voltage used in many modern railway systems around the world, such as in Europe and parts of Asia.

• 750V DC may be more su...read more
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Q3. Write code to reverse string without using string or inbuilt function
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Reverse a string without using string or inbuilt function
• Create an array of characters to store the string

• Use two pointers, one at the beginning and one at the end, swap characters until they meet

• Repeat until all characters are swapped
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