20+ Sri Indu Technical Services Interview Questions and Answers

A centrifugal pump is a mechanical device used to transport fluids by converting rotational energy into hydrodynamic energy.

• Centrifugal pumps are commonly used in industries such as oil and gas, water treatment, and chemical processing.

• They work by using an impeller to create a centrifugal force that pushes the fluid towards the pump outlet.

• The impeller rotates at high speeds, generating kinetic energy that is then converted into pressure energy.

• Centrifugal pumps are efficien...read more

Some mathematical formulas for area of circle, volume of cone, and volume of sphere.

• Area of circle: A = πr²

• Volume of cone: V = (1/3)πr²h

• Volume of sphere: V = (4/3)πr³

A gear is a mechanical device that transmits rotational motion and power between two or more rotating shafts.

• Gears are used in various machines and mechanisms to change the speed, torque, and direction of rotation.

• They consist of toothed wheels that mesh together to transmit power.

• Different types of gears include spur gears, helical gears, bevel gears, worm gears, etc.

• Spur gears are the most common type, with straight teeth parallel to the gear axis.

• Helical gears have angled ...read more

TG protection details with rated setting

• TG protection refers to transformer generator protection

• Rated setting refers to the maximum allowable current or voltage that the protection system can handle

• The protection system should be able to detect and isolate faults in the TG system

• The rated setting should be set based on the maximum expected fault current or voltage

• The protection system should be regularly tested and maintained to ensure proper functioning

There are several types of gears used in the market.

• Spur gears

• Helical gears

• Bevel gears

• Worm gears

• Planetary gears

• Rack and pinion gears

• Internal gears

• Miter gears

• Spiral bevel gears

• Hypoid gears

Hydraulic pump is a device that converts mechanical energy into hydraulic energy. Centrifugal pump is a type of pump that uses centrifugal force to move fluid. Tube bundle dryers are used to dry materials in a tube. Root blower is a type of positive displacement blower.

• Hydraulic pump converts mechanical energy into hydraulic energy

• Centrifugal pump uses centrifugal force to move fluid

• Tube bundle dryers are used to dry materials in a tube

• Root blower is a type of positive displa...read more

NGR function with auto operation

• NGR stands for Neutral Grounding Resistor

• It is used to limit the fault current in a power system

• Auto operation means the NGR is automatically switched on or off based on the system conditions

• This helps in protecting the equipment and personnel from damage or harm

Daily maintenance planning schedule involves scheduling and prioritizing maintenance tasks.

• Create a list of maintenance tasks

• Prioritize tasks based on urgency and importance

• Assign tasks to team members

• Set deadlines for completion

• Regularly review and adjust schedule as needed

Relay coordination principle ensures that the protective devices operate in a coordinated manner to isolate the faulted section.

• Relay coordination principle is used to ensure that the protective devices operate in a coordinated manner to isolate the faulted section.

• It involves selecting the appropriate time-current characteristic curves for the protective devices.

• The aim is to ensure that the protective device closest to the fault operates first, followed by the next protecti...read more

I am a highly motivated and detail-oriented professional with experience in purchasing and procurement.

• I have a strong understanding of supply chain management and vendor relations.

• I am skilled in negotiating contracts and ensuring cost-effective purchasing decisions.

• I have a proven track record of optimizing inventory levels and reducing procurement costs.

• I am proficient in using purchasing software and have excellent analytical skills.

• I am a team player and have the ability...read more

The steps of purchase involve identifying needs, researching suppliers, evaluating options, negotiating terms, making a purchase decision, and managing the procurement process.

• Identify the needs or requirements for the purchase

• Research and gather information about potential suppliers

• Evaluate and compare different options based on factors like price, quality, and delivery time

• Negotiate terms and conditions with the chosen supplier

• Make a purchase decision and place the order

• Man...read more

Managing employees requires clear communication, setting expectations, providing feedback, and creating a positive work environment.

• Establish clear expectations and goals for each employee

• Provide regular feedback and coaching to help employees improve

• Create a positive work environment that fosters collaboration and teamwork

• Communicate openly and transparently with employees

• Recognize and reward employees for their hard work and achievements

There are numerous types of materials, including metals, polymers, ceramics, composites, and more.

• Metals: iron, aluminum, copper, etc.

• Polymers: plastics, rubber, etc.

• Ceramics: glass, porcelain, etc.

• Composites: fiberglass, carbon fiber, etc.

• Other: wood, concrete, etc.

There are several types of bolts, including hex bolts, carriage bolts, and lag bolts.

• Hex bolts have a hexagonal head and are commonly used in construction.

• Carriage bolts have a smooth, rounded head and are often used in woodworking.

• Lag bolts have a pointed tip and are used to attach heavy objects to wood or other materials.

• Other types of bolts include eye bolts, U-bolts, and J-bolts.

Transformers work on the principle of electromagnetic induction to transfer electrical energy between two or more circuits.

• Transformers have two coils of wire, known as primary and secondary coils, which are wound around a core made of ferromagnetic material.

• When an alternating current flows through the primary coil, it creates a changing magnetic field around the coil.

• This changing magnetic field induces a voltage in the secondary coil, causing current to flow through it.

• The...read more

Transformers are cooled using methods such as oil cooling, air cooling, and water cooling.

• Oil cooling: Transformers are immersed in oil to dissipate heat generated during operation.

• Air cooling: Fans are used to circulate air around the transformer to cool it down.

• Water cooling: Water is circulated around the transformer to absorb heat and cool it.

• Forced oil cooling: Oil is circulated through a heat exchanger to remove heat more efficiently.

I have excellent communication skills, both verbal and written.

• I am able to clearly articulate my thoughts and ideas

• I actively listen to others and ask clarifying questions

• I am comfortable communicating with people at all levels of an organization

• I am proficient in written communication, including email and reports

• I am able to adapt my communication style to different situations and audiences

PH is a measure of acidity or alkalinity of a solution on a scale of 0-14.

• PH stands for 'potential of hydrogen'.

• A solution with a PH of 7 is neutral, below 7 is acidic, and above 7 is alkaline.

• The PH scale is logarithmic, meaning a change of one unit represents a tenfold change in acidity or alkalinity.

• Examples of PH values: lemon juice (2), vinegar (3), coffee (5), pure water (7), baking soda (9), bleach (12).

A buffer solution is a solution that resists changes in pH when small amounts of acid or base are added.

• Buffer solutions contain a weak acid and its conjugate base or a weak base and its conjugate acid.

• They are used in various applications such as in biological systems, chemical reactions, and analytical chemistry.

• Examples of buffer solutions include acetic acid-sodium acetate buffer and phosphate buffer.

• Buffer capacity is the amount of acid or base that can be added to a buf...read more