Statcon Power Controls Junior Engineer 1 Interview Questions and Answers

Q1. What is polymorphism?
Ans. 
Polymorphism is the ability of a single function or method to operate on different types of data.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example: Inheritance in object-oriented programming languages like Java allows for polymorphism.

• Example: Function overloading
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Q2. Design a 3 but up/down counter?
Ans. 
A 3-bit up/down counter can be designed using flip-flops and logic gates.
• Use 3 D flip-flops to store the count value.

• Connect the Q output of each flip-flop to the D input of the next flip-flop.

• Use logic gates to control the direction of counting (up or down).
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Q1. About your self details
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Q2. Project explain
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I worked on a project to develop a mobile application for a local restaurant.
• The project involved designing the user interface and user experience of the app.

• I collaborated with a team of developers to build the app using React Native.

• We integrated features such as online ordering, menu browsing, and push notifications.

• I also conducted user testing and made improvements based on feedback.

• The project was completed withi
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Q1. Subject wise questions.
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Q2. How do job performances.
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Job performances are evaluated based on the quality and quantity of work done, adherence to deadlines, teamwork, and communication skills.
• Quality and quantity of work done

• Adherence to deadlines

• Teamwork

• Communication skills
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Simple 20 question online test

Q1. Simple interview
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Q1. How to reduce resistance for transformer
Ans. 
To reduce resistance in a transformer, one can use low resistance materials, increase the cross-sectional area of the winding, and minimize the length of the winding.
• Use low resistance materials for the transformer windings

• Increase the cross-sectional area of the winding to reduce resistance

• Minimize the length of the winding to reduce resistance

• Ensure proper insulation to avoid any short circuits

• Maintain proper cooling
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Q1. Testing of energy meters, CTs and PTs etc.
Ans. 
Testing of energy meters, CTs and PTs involves verifying their accuracy and functionality.
• Energy meters are tested to ensure they measure energy consumption accurately.

• CTs (Current Transformers) are tested to verify their current ratio and accuracy.

• PTs (Potential Transformers) are tested to verify their voltage ratio and accuracy.

• Testing may involve simulating different load conditions and measuring the output.

• Calibrat...read more
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Q1. How energy meter will be test on line mode at site.
Ans. 
Energy meter can be tested on line mode at site using a portable test equipment.
• Use a portable test equipment to simulate the load and measure the output of the energy meter.

• Ensure that the test equipment is calibrated and accurate.

• Perform the test during normal operating conditions to get accurate results.

• Compare the readings with the manufacturer's specifications to determine if the energy meter is functioning proper...read more
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Q2. How CT will be test at site with load condition.
Ans. 
CT can be tested at site with load condition using a test kit and a load bank.
• Use a test kit to measure the CT ratio and polarity

• Connect the CT to a load bank to simulate load conditions

• Measure the output voltage and current of the CT under load

• Compare the measured values with the CT specifications

• Repeat the test for different load conditions

• Ensure safety precautions are taken during the test
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Q1. How PT will be test at load condition.
Ans. 
PT can be tested at load condition by applying the load and measuring the voltage and current.
• Apply the load to the PT

• Measure the voltage and current using appropriate instruments

• Calculate the power factor and accuracy of the PT

• Ensure that the PT is within the acceptable limits of error

• Repeat the test at different load conditions to ensure accuracy
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Q2. How over current relay will be set according to the load described.
Ans. 
Over current relay is set based on the load current and time characteristics.
• Determine the maximum load current and time characteristics

• Select the appropriate over current relay type and current rating

• Calculate the relay settings based on the load current and time characteristics

• Adjust the settings to ensure proper coordination with other protective devices

• Test the relay to ensure proper operation
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Q1. Basis of production interview questions.
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Q1. Salary discussion
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