Tata Steel Associate Engineer Interview Questions, Process, and Tips

Tests done during maintenance of a power transformer

• Insulation resistance test

• Turns ratio test

• Winding resistance test

• Oil quality test

• Partial discharge test

• Visual inspection

To test id run in a VFD, measure the current and voltage at the motor terminals.

• Measure the current and voltage at the motor terminals using a multimeter.

• Compare the measured values with the rated values of the motor.

• Ensure that the VFD is properly programmed and configured for the motor.

• Check for any abnormal noise or vibration from the motor during operation.

• Perform a visual inspection of the motor and VFD for any si

RTD stands for Resistance Temperature Detector. It is a type of temperature sensor.

• RTD measures temperature by detecting the change in resistance of a metal wire as the temperature changes.

• The most common types of RTD are platinum, nickel, and copper.

• Platinum RTDs are the most accurate and have the widest temperature range (-200°C to 850°C).

• Nickel RTDs have a smaller temperature range (-80°C to 260°C) but are less expe...read more

VCB maintenance procedures involve regular inspection, cleaning, lubrication, and testing.

• Inspect the VCB for any signs of damage or wear.

• Clean the VCB and its components regularly to prevent dust and dirt buildup.

• Lubricate moving parts to ensure smooth operation.

• Test the VCB regularly to ensure it is functioning properly.

• Follow manufacturer's guidelines and safety procedures.

• Keep records of maintenance and repairs.

• Tra...read more

Speed of an EOT crane can be controlled by changing the voltage or frequency of the power supply.

• By changing the voltage or frequency of the power supply, the speed of the EOT crane can be controlled.

• This can be achieved by using a transformer to change the voltage or a generator to change the frequency.

• However, this method is not as efficient as using a VFD.

• Another option is to use a mechanical system such as a gearbo...read more

Coupling refers to the degree of interdependence between software modules.

• Coupling can be classified as tight or loose.

• Tight coupling means modules are highly dependent on each other.

• Loose coupling means modules have minimal dependencies.

• Types of coupling include data coupling, stamp coupling, control coupling, etc.

• Data coupling occurs when modules share data through parameters or global variables.

• Stamp coupling occurs...read more

A fluid coupling is a device used to transmit rotational power between two shafts without direct mechanical connection.

• Fluid coupling uses hydraulic fluid to transmit torque.

• It consists of an impeller, turbine, and a fluid medium.

• The impeller is connected to the input shaft and the turbine to the output shaft.

• When the impeller rotates, it creates a flow of fluid which in turn rotates the turbine.

• The fluid coupling allo...read more