10+ Shift Incharge Engineer Interview Questions and Answers

This interview is for the Shift Incharge Engineer position and the questions are related to compressors and Siemens Energy.

• Compressor is a mechanical device that increases the pressure of a gas by reducing its volume.

• There are two main types of compressors - positive displacement and dynamic.

• Double acting compressors compress the gas on both sides of the piston.

• Siemens Energy is a global energy company that provides products and solutions for power generation and transmission...read more

Primary and secondary current voltage on transformer refers to the input and output voltage and current of the transformer.

• Primary voltage and current refer to the input side of the transformer, while secondary voltage and current refer to the output side.

• The ratio of primary to secondary voltage is determined by the turns ratio of the transformer.

• For example, a transformer with a turns ratio of 1:2 will have twice the secondary voltage as the primary voltage.

• The primary and ...read more

CVT in transmission line works by continuously varying the gear ratio to provide smooth acceleration and optimal engine performance.

• CVT uses a belt and pulley system to vary the gear ratio based on engine speed and load

• It provides seamless acceleration without the need for traditional gear shifts

• CVT allows the engine to operate at its most efficient RPM range for better fuel economy

• Examples of vehicles with CVT include Nissan Altima, Honda Civic, and Subaru Outback

Slip ring induction motors are used on cranes for their ability to provide high starting torque and smooth acceleration.

• Slip ring induction motors have a high starting torque which is necessary for lifting heavy loads on cranes.

• They also provide smooth acceleration which is important for maintaining control over the load.

• The slip ring design allows for easy maintenance and replacement of the brushes.

• Examples of cranes that use slip ring induction motors include gantry cranes,...read more

PSSR stands for Pre-Startup Safety Review. It is required to ensure that all safety measures are in place before starting up a new process or system.

• PSSR is a thorough review of safety procedures, equipment, and documentation before starting up a new process or system.

• It helps identify potential hazards, ensure proper safety measures are in place, and prevent accidents or incidents.

• PSSR involves reviewing safety data sheets, operating procedures, emergency response plans, and...read more

A petrol engine works by igniting a mixture of fuel and air inside a cylinder to create a controlled explosion that powers the engine.

• Fuel and air are mixed in the carburetor or fuel injection system

• The mixture is compressed by a piston inside a cylinder

• A spark plug ignites the mixture, causing a controlled explosion

• The explosion pushes the piston down, which turns the crankshaft and powers the engine

• The exhaust gases are expelled through the exhaust system

Diesel engines work by compressing air and fuel in a cylinder, causing combustion and driving a piston.

• Air is drawn into the cylinder and compressed by a piston.

• Fuel is injected into the cylinder and ignites due to the high temperature and pressure.

• The resulting explosion drives the piston, which turns the crankshaft and powers the engine.

• Diesel engines are commonly used in trucks, buses, and heavy equipment due to their high torque and fuel efficiency.

PRV stands for Pressure Relief Valve, a safety device designed to protect equipment from overpressure by releasing excess pressure.

• PRVs are commonly used in industries such as oil and gas, chemical, and manufacturing.

• They are designed to open when the pressure inside a system exceeds a certain set point, allowing the excess pressure to be released.

• PRVs help prevent catastrophic failures and protect equipment from damage.

• Examples of PRVs include spring-loaded valves, pilot-ope...read more

To reduce electric bill, focus on energy efficiency and conservation.

• Switch to energy-efficient appliances and lighting

• Unplug electronics when not in use

• Use power strips to easily turn off multiple devices at once

• Adjust thermostat settings to reduce heating and cooling costs

• Consider installing solar panels or other renewable energy sources

Testing of transformer involves various electrical tests to ensure its performance and safety.

• Routine tests include turns ratio test, insulation resistance test, and winding resistance test.

• Type tests include temperature rise test, impulse test, and short circuit test.

• Special tests may include partial discharge test and noise level test.

• Testing is crucial to ensure the transformer meets specifications and standards for efficiency and safety.

• Regular maintenance and testing hel...read more

A wave trap is a device used in electrical systems to filter out unwanted high-frequency signals.

• Wave traps are typically used in power systems to prevent high-frequency currents from flowing back into the system.

• They are designed to have a high impedance at the frequency of the unwanted signal, effectively blocking it from passing through.

• Wave traps can be installed on transmission lines or connected to transformers to protect equipment from damage caused by high-frequency d...read more