Shapoorji Pallonji Group Manager Mechanical Interview Questions and Answers

Q1. What is the viscosity?
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Q1. Negotiable round
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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. What about power plant
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Q1. About strl erection
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Q2. About manpower handeling
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Q3. About codes and standards
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Q4. About raw material
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Q5. About contractor handling
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Q6. About hot work and height job executing
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Q7. About erection procedures of structure
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Q8. About safety precautions during hot job
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Q1. What are the Fire NOC conditions
Ans. 
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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Q1. Ask by HR to interviewer of their basic knowledge.
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Q2. Name, qualifications, where from, last job, last job responsibility etc.
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Q3. Software skill, SAP, Excel, Word, PPT etc.
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Q1. Equipment knowledge, engines knowledge, hydraulic machinery knowledge, hydraulic drawings, electrical drawings, knowledge of documentation work.
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Q2. They told me to prepare spares list from a breakdown hydra, TSE. Test my knowledge from breakdown equipment repair skills ask Hydraulic circuit they told me to attend breakdown of Hydraulic machines. Live...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
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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. What is your Current CTC?
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Q2. What will be the notice period?
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Q1. What are the parts of AHU?
Ans. 
An Air Handling Unit (AHU) consists of several parts that work together to condition and circulate air.
• Filter section: Removes dust and particles from the air.

• Heating coil: Warms the air before it is distributed.

• Cooling coil: Cools the air before it is distributed.

• Humidifier: Adds moisture to the air if needed.

• Fan: Circulates the air through the AHU.

• Dampers: Control the flow of air.

• Mixing chamber: Mixes outside and ret...read more
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Q2. What do you mean by ACPH?
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ACPH stands for Air Changes Per Hour.
• ACPH is a measurement used to determine the rate at which the air in a space is replaced with fresh air.

• It is commonly used in HVAC systems to ensure proper ventilation and air quality.

• ACPH is calculated by dividing the volume of air in a space by the flow rate of fresh air into that space.

• For example, if a room has a volume of 1000 cubic feet and fresh air is supplied at a rate of ...read more
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Q3. How much ACPH should be maintained in Kitchen?
Ans. 
The recommended ACPH for a kitchen depends on the size and type of kitchen.
• The recommended ACPH for a commercial kitchen is 15-20 ACPH (air changes per hour).

• The size and type of kitchen, as well as the type of cooking equipment used, can affect the recommended ACPH.

• The ACPH can be calculated by dividing the volume of the kitchen by the airflow rate.

• Proper ventilation and exhaust systems should be in place to maintain ...read more
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Q4. What do you mean by VAV?
Ans. 
VAV stands for Variable Air Volume.
• VAV is a type of HVAC system that varies the airflow to different zones based on their heating and cooling needs.

• It uses dampers to control the amount of air flowing into each zone.

• VAV systems are energy-efficient and can save money on heating and cooling costs.

• They are commonly used in commercial buildings and large residential buildings.

• VAV systems can be controlled by a building au
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Q5. Explain the working of VAV?
Ans. 
VAV stands for Variable Air Volume. It is an HVAC system that controls the airflow to different zones based on their heating and cooling needs.
• VAV uses a series of dampers to regulate the amount of air flowing into a space.

• It measures the temperature of the air in each zone and adjusts the airflow accordingly.

• VAV systems are energy-efficient as they only supply the amount of air required to maintain the desired tempera...read more
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Q6. What is the thumb rule to calculate the water consumption in a cooling tower?
Ans. 
The thumb rule to calculate water consumption in a cooling tower is 3 GPM per every 100 tons of cooling.
• Water consumption in cooling tower is calculated based on the cooling load

• The thumb rule is 3 GPM per every 100 tons of cooling

• Factors like temperature, humidity, and air flow rate affect water consumption

• Water treatment and maintenance can also impact water consumption
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Q7. What are the parameters considered while calculating the heat load in a room?
Ans. 
Parameters considered while calculating heat load in a room
• Size of the room

• Number of occupants

• Type and number of electrical appliances

• Number and size of windows

• Insulation of walls and ceiling

• Orientation of the room

• Climate of the region
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Q8. Why do we consider the directions while calculating a heat load?
Ans. 
Directions affect the amount of heat transferred and the efficiency of the system.
• Heat transfer is affected by the direction of the flow of fluids or gases.

• The orientation of the surface being heated or cooled affects the amount of heat transferred.

• The direction of the sun's rays can affect the heat load on a building.

• The direction of wind flow affects the heat load on a building.

• Considering directions helps in designi
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