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A distribution transformer is a device used to step down high voltage electricity to a lower voltage suitable for use in homes and businesses.
Converts high voltage electricity from power lines to lower voltage for distribution
Commonly used in electrical distribution systems
Helps reduce voltage for safe use in homes and businesses
Examples include pole-mounted transformers and pad-mounted transformers
Relay testing of transformer involves verifying the proper functioning of protective relays to ensure the safety of the transformer.
Ensure proper settings of the relay for overcurrent, overvoltage, and differential protection
Verify the coordination between different relays to ensure proper protection
Perform primary and secondary injection tests to simulate fault conditions
Check the response time of the relay to ensure ...
Common types of motors used in industrial applications include AC motors, DC motors, and servo motors.
AC motors are commonly used for high-power applications and are cost-effective.
DC motors are often used for variable speed applications and precise control.
Servo motors are used for applications requiring high precision and accuracy, such as robotics and CNC machines.
The ratio of transformer is the ratio of the number of turns in the primary winding to the number of turns in the secondary winding.
The ratio of transformer is also known as turns ratio.
It determines how much the voltage is stepped up or down in a transformer.
For example, a transformer with a turns ratio of 1:2 will double the voltage from the primary to the secondary winding.
The value of 11kv DO FUSE rating is typically around 200A to 400A.
The value of 11kv DO FUSE rating is usually between 200A to 400A.
This rating determines the maximum current that the fuse can safely handle without blowing.
It is important to select the correct fuse rating based on the application and load requirements.
For example, a 11kv DO FUSE with a rating of 300A would be suitable for a specific electrical circuit.
I applied via Campus Placement and was interviewed in Jan 2024. There were 2 interview rounds.
Distribution networks can be categorized into radial, loop, and network types.
Radial distribution network: Power flows in one direction from the source to the load.
Loop distribution network: Power flows in multiple directions forming loops for redundancy.
Network distribution network: Power flows through interconnected paths for reliability and flexibility.
Relays are electrically operated switches used to control high power circuits with low power signals.
Electromechanical relays: use electromagnets to mechanically operate the switch (e.g. SPST, DPDT)
Solid-state relays: use semiconductor devices to perform switching action (e.g. SSR)
Time delay relays: provide a delay before switching (e.g. ON delay, OFF delay)
Overload protection relays: protect circuits from excessive cu
Medium level GD round
TP Central Odisha Distribution interview questions for popular designations
TPCODL stands for Tamil Nadu Power Finance and Infrastructure Development Corporation Limited.
TPCODL is a government-owned company in Tamil Nadu, India.
It is involved in financing and developing infrastructure projects in the state.
Example: TPCODL provided funding for the construction of a new power plant in Tamil Nadu.
Get interview-ready with Top TP Central Odisha Distribution Interview Questions
I applied via Campus Placement and was interviewed in Apr 2023. There were 3 interview rounds.
What is current & voltage
A transformer is an electrical device that transfers electrical energy from one circuit to another through electromagnetic induction.
Transformers are used to increase or decrease the voltage of an alternating current (AC) power supply.
They consist of two coils of wire, known as the primary and secondary coils, which are wrapped around a magnetic core.
When an AC voltage is applied to the primary coil, it creates a magne...
Transformers work on the principle of electromagnetic induction to transfer electrical energy from one circuit to another.
Transformers have two coils of wire, a primary coil and a secondary coil, wrapped around a magnetic core.
When an alternating current flows through the primary coil, it creates a magnetic field that induces a voltage in the secondary coil.
The voltage induced in the secondary coil is proportional to t...
Transformers are devices that transfer electrical energy from one circuit to another through electromagnetic induction.
There are several types of transformers, including power transformers, distribution transformers, autotransformers, isolation transformers, and instrument transformers.
Power transformers are used in high voltage transmission systems to step up or step down voltage levels.
Distribution transformers are u...
Eddy current loss is the energy lost due to the resistance of a material to the flow of eddy currents induced by a changing magnetic field.
Eddy current loss occurs in conductive materials when they are exposed to a changing magnetic field.
This loss is due to the resistance of the material to the flow of eddy currents.
Eddy current loss can be reduced by using laminated cores in transformers and motors.
Examples of eddy c...
Core loss is the energy lost in the magnetic core of a transformer or inductor due to hysteresis and eddy currents.
Core loss is also known as iron loss.
It is caused by the magnetic field in the core constantly changing direction, which causes the core to heat up and energy to be lost.
Hysteresis loss is caused by the magnetic domains in the core constantly changing direction, which causes friction and energy loss.
Eddy c...
I applied via Walk-in and was interviewed in Aug 2023. There was 1 interview round.
The formula for transformer short circuit test is Vsc = (Isc * Zsc)
The short circuit test is performed to determine the impedance and losses of a transformer.
The formula for short circuit test is Vsc = (Isc * Zsc), where Vsc is the short circuit voltage, Isc is the short circuit current, and Zsc is the impedance of the transformer.
The short circuit test is conducted by applying a reduced voltage to the primary winding ...
I applied via Recruitment Consulltant and was interviewed before Feb 2023. There was 1 interview round.
Handling consumers in customer service involves active listening, empathy, problem-solving, and effective communication.
Listen actively to understand the consumer's concerns
Show empathy and understanding towards their situation
Offer solutions and problem-solving assistance
Communicate clearly and effectively to provide information or resolve issues
Maintain a positive and professional attitude throughout the interaction
Yes, I am willing to go to rural places and speak to customers.
I am comfortable traveling to rural areas to meet with customers.
I understand the importance of providing excellent customer service, regardless of location.
I have experience communicating effectively with customers from diverse backgrounds.
I am adaptable and can quickly learn about the specific needs and challenges of rural customers.
I am committed to buil...
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