Sri Sai Power and Equipments Interview Questions and Answers

A transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.

• Consists of two coils of wire, known as primary and secondary coils

• Primary coil receives electrical energy and creates a magnetic field

• Magnetic field induces a voltage in the secondary coil, transferring energy

• Used in power distribution, voltage regulation, and isolation

• Examples include step-up tran...read more

Protection of generator involves implementing various measures to prevent damage during abnormal operating conditions.

• Implementing overcurrent protection to prevent damage from excessive current flow

• Installing differential protection to detect internal faults

• Using reverse power protection to prevent generator from acting as a motor

• Applying overvoltage and undervoltage protection to safeguard against voltage fluctuation...read more

Rankine cycle is a thermodynamic cycle used in power plants to convert heat into mechanical work.

• Rankine cycle is a thermodynamic cycle that converts heat into mechanical work.

• It consists of four main components: a pump, a boiler, a turbine, and a condenser.

• The cycle starts with the pump sending liquid water to the boiler where it is heated and converted into high-pressure steam.

• The high-pressure steam then enters the ...read more

AI, AO, DI, DO signals are types of signals used in instrumentation engineering.

• AI stands for Analog Input and refers to signals that are continuous and can take any value within a range.

• AO stands for Analog Output and refers to signals that are continuous and can be controlled to produce a specific output value.

• DI stands for Digital Input and refers to signals that are discrete and can only take on two values, typical...read more

Interlocks are safety mechanisms that prevent the turbine from operating under unsafe conditions.

• Interlocks are designed to prevent damage to the turbine and ensure safe operation.

• They can be mechanical, electrical, or software-based.

• Examples include overspeed protection, low oil pressure shutdown, and high exhaust temperature shutdown.

• Interlocks are critical components of turbine control systems and must be properly m...read more

Drum level maintenance differs in 3-element and single element systems.

• In 3-element systems, the drum level is controlled by measuring the water level, steam flow, and feedwater flow.

• In single element systems, only the water level is measured.

• Maintenance in 3-element systems involves checking and calibrating the sensors for each parameter.

• Maintenance in single element systems involves checking and calibrating the water...read more

Control valve troubleshooting involves identifying and resolving issues with the valve's performance.

• Check for any leaks or blockages in the valve

• Inspect the valve's positioner and actuator for any faults

• Verify that the valve is receiving the correct signals from the control system

• Check the valve's calibration and adjust if necessary

• Perform a functional test to ensure proper operation

Emerson DCS programming skills are essential for a Senior Instrumentation Engineer.

• Proficiency in programming languages such as ladder logic, function block, and sequential function chart

• Experience in configuring and programming Emerson DeltaV DCS systems

• Knowledge of Emerson AMS Device Manager software for device configuration and diagnostics

• Ability to troubleshoot and debug DCS programming issues

• Familiarity with indus