Viraj Profiles Mechanical Maintenance Engineer Interview Questions and Answers

Q1. What are type of crane used
Ans. 
Various types of cranes are used in mechanical maintenance, including overhead cranes, gantry cranes, jib cranes, and mobile cranes.
• Overhead cranes are commonly used in industrial settings for lifting and moving heavy loads.

• Gantry cranes are used in shipyards and construction sites for lifting and moving large objects.

• Jib cranes are often used in workshops and warehouses for precise lifting and positioning of materials...read more
Answered by AI
Add your answer
Q2. What are type of loading on bearing
Ans. 
Types of loading on bearings include radial load, axial load, and moment load.
• Radial load: Load acting perpendicular to the axis of rotation.

• Axial load: Load acting parallel to the axis of rotation.

• Moment load: Load causing bending or twisting of the bearing.

• Combination loading: Bearings may experience a combination of radial, axial, and moment loads.

• Examples: Radial load on a wheel bearing, axial load on a thrust bear
Answered by AI
Add your answer
Q3. What type of heat treatment to be done on tube mill shaft
Ans. 
The tube mill shaft should undergo heat treatment to improve its strength and durability.
• The most common heat treatment for tube mill shafts is quenching and tempering.

• Quenching involves heating the shaft to a high temperature and then rapidly cooling it in water or oil to increase its hardness.

• Tempering is done after quenching to reduce the brittleness caused by the rapid cooling process.

• Other heat treatment methods l...read more
Answered by AI
Add your answer
Q4. What do you understand by Pickling process
Ans. 
Pickling process is a metal surface treatment method to remove impurities and improve corrosion resistance.
• Pickling is a chemical process used to remove impurities like stains, rust, and scale from metal surfaces.

• It involves immersing the metal in an acidic solution, such as hydrochloric acid or sulfuric acid.

• The process helps to improve the metal's corrosion resistance and prepare it for further treatments like painti...read more
Answered by AI
Add your answer
Q5. What happen in cold rolling mill process to structure of steel
Ans. 
In cold rolling mill process, the structure of steel is altered through compression and deformation.
• Cold rolling reduces the thickness of steel by compressing it between rollers

• This process increases the strength and hardness of the steel

• Grain structure of the steel becomes elongated and aligned in the direction of rolling

• Cold rolling can also improve the surface finish and dimensional accuracy of the steel

• Examples: Co...read more
Answered by AI
Add your answer
Q6. How Centrifugal pump work
Ans. 
Centrifugal pumps work by converting mechanical energy from a motor into kinetic energy to move fluid through the pump.
• Centrifugal force is created by the rotation of the pump impeller, which pushes the fluid towards the outer edges of the pump casing.

• The kinetic energy of the fluid increases as it moves through the pump, creating pressure that forces the fluid out of the pump discharge.

• Centrifugal pumps are commonly u...read more
Answered by AI
Add your answer
Q7. Tube mill roll materail and their root dia
Ans. 
Tube mill rolls are typically made of high-quality alloy steel or tool steel, with varying root diameters depending on the specific application.
• Tube mill rolls are commonly made of materials such as high-quality alloy steel or tool steel for durability and wear resistance.

• The root diameter of tube mill rolls can vary depending on the specific requirements of the milling process.

• Examples of tube mill roll materials incl...read more
Answered by AI
Add your answer
Q8. Gear box ratio and output power
Ans. 
Gear box ratio determines the relationship between input and output speeds, while output power is the amount of work done per unit of time.
• Gear box ratio is the ratio of the number of teeth on the input gear to the number of teeth on the output gear.

• Output power is the product of the force applied and the distance over which the force is applied per unit of time.

• For example, if a gear box has a ratio of 2:1 and the inp...read more
Answered by AI
Add your answer

Q1. Working principal of pump
Ans. 
Pumps work by creating a pressure difference to move fluid from one place to another.
• Pumps use mechanical energy to increase the pressure of a fluid and move it through a system

• They can be classified into different types such as centrifugal pumps, positive displacement pumps, etc.

• The working principle involves the conversion of mechanical energy into hydraulic energy

• Examples include water pumps in buildings, fuel pumps
Answered by AI
View 1 more answer
Q2. What is working principal of cooling tower
Ans. 
Cooling towers work on the principle of evaporative cooling to remove heat from a process or building.
• Cooling towers use water as a cooling medium to absorb heat from a process or building.

• The hot water is pumped to the top of the tower and distributed over the fill media.

• As the water flows over the fill media, some of it evaporates, taking away heat and cooling the rest of the water.

• The cooled water is then collected ...read more
Answered by AI
Add your answer
Q3. Pollution bag filter specifications
Ans. 
Pollution bag filter specifications include material type, filtration efficiency, airflow capacity, and pressure drop.
• Material type: Bag filters can be made of various materials such as polyester, polypropylene, or fiberglass.

• Filtration efficiency: This indicates the percentage of particles the filter can capture. Higher efficiency filters are more effective but may have higher pressure drops.

• Airflow capacity: The maxi...read more
Answered by AI
Add your answer
Q4. Softner water parameter
Add your answer
Q5. What is the formula of centrifugal pump head
Ans. 
The formula for centrifugal pump head is H = (Q * SG) / (3.14 * D^2 * 2.31)
• Head (H) is calculated using the flow rate (Q), specific gravity (SG), and diameter of the impeller (D)

• The formula is derived from the basic equation for head in a centrifugal pump

• Example: H = (100 gpm * 1.0) / (3.14 * 0.5^2 * 2.31) = 45.75 ft
Answered by AI
Add your answer

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
Answered by AI
Add your answer
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
Answered by AI
Add your answer

Q1. Types of bearing.
Ans. 
Types of bearings include ball bearings, roller bearings, plain bearings, and fluid bearings.
• Ball bearings use balls to reduce friction between two surfaces.

• Roller bearings use cylindrical rollers to reduce friction.

• Plain bearings have a sliding surface instead of balls or rollers.

• Fluid bearings use a thin layer of liquid or gas to reduce friction.

• Examples: Ball bearings - deep groove ball bearing, Roller bearings - cy...read more
Answered by AI
Add your answer
Q2. Difference between petrol engine & diesel engine
Ans. 
Petrol engines use spark ignition, while diesel engines use compression ignition.
• Petrol engines use a spark plug to ignite the air-fuel mixture, while diesel engines rely on compression to ignite the fuel.

• Petrol engines are lighter and more responsive, while diesel engines are more fuel efficient and have higher torque.

• Petrol engines are typically used in cars and motorcycles, while diesel engines are commonly found in
Answered by AI
Add your answer
Q3. Types of gears.
Ans. 
Types of gears include spur gears, helical gears, bevel gears, worm gears, rack and pinion gears, and planetary gears.
• Spur gears have straight teeth and are the simplest type of gear.

• Helical gears have angled teeth for smoother and quieter operation.

• Bevel gears have cone-shaped teeth and are used to change the direction of rotation.

• Worm gears have a screw-like appearance and provide high gear reduction ratios.

• Rack and ...read more
Answered by AI
Add your answer
Q4. Show in tools name.
Add your answer

Q1. Engineering technical
Add your answer

Q1. Salary Hike in percentage
Add your answer
Q2. Salary Hike as per previous company
Add your answer

Jsw Steel is a best company

Q1. Sir company kis cheez ka manufacturing krti hai
Add your answer

Q1. Sir company ka future me goal kya hai
Add your answer