Maharashtra State Electricity Distribution Company Electrical Operations and Maintenance Engineer Interview Questions and Answers

Q1. Electrical questions for machine
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Q2. Machine of electrical
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Q3. Electrical questions
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Q4. Machine of a electrical device
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A machine is a combination of electrical components that work together to perform a specific function.
• Machines can range from simple devices like a toaster to complex systems like a computer.

• They typically consist of power sources, input/output components, control systems, and mechanical parts.

• Examples include washing machines, refrigerators, and electric motors.
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Q1. Loop checking &brekars & really ref 615 &rem620 settings all working electrical work
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Q1. What is isolator ? Answer:- आइसोलेटर एक स्विचिंग डिवाइस है जो एक सर्किट में विद्युत प्रवाह को बनाने और तोड़ने की पेशकश करता है।
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Q2. What is circuit breaker?
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A circuit breaker is an electrical switch that automatically interrupts the flow of current in a circuit.
• It is designed to protect electrical circuits from damage caused by excessive current or short circuits.

• When the current exceeds a certain limit, the circuit breaker trips and interrupts the flow of electricity.

• It can be manually reset after tripping or may automatically reset once the fault is cleared.

• Circuit break...read more
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Q3. What is transformer? Answer:- ट्रांसफार्मर एक ऐसा विद्युत यंत्र है जो कि AC सप्लाई की फ्रीक्वेंसी को बिना बदले उसे कम या ज्यादा करने के लिए इस्तेमाल किया जाता है.
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Q4. What is the step up and step down transformer?
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Step up and step down transformers are used to increase or decrease the voltage in electrical systems.
• Step up transformers increase the voltage from the input to the output.

• Step down transformers decrease the voltage from the input to the output.

• Step up transformers have more turns in the secondary coil than in the primary coil.

• Step down transformers have fewer turns in the secondary coil than in the primary coil.

• Step ...read more
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Q1. Capability curve of Generator
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Capability curve of a generator shows the relationship between the electrical output and mechanical input of the generator.
• The capability curve is a graph that shows the maximum electrical output a generator can produce at different mechanical input levels.

• It helps in determining the operating limits of the generator and ensures it is not overloaded.

• The curve typically shows the maximum power output, rated power output...read more
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Q2. All Protection of Generator
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All protection of a generator is essential to ensure its safe and efficient operation.
• Overcurrent protection to prevent damage from excessive current flow

• Overvoltage protection to safeguard against voltage spikes

• Underfrequency protection to prevent damage during frequency deviations

• Reverse power protection to prevent generator from acting as a motor

• Earth fault protection to detect ground faults and protect equipment

• Tem...read more
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Q3. Transformers testing
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This has two papers one technical and one non technical
Technical has only two subjects machines and power systems 100 ques 1 hour.
Non technical exam has 50 ques 1/2hour.

Q1. Share details of your previous job.
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Q2. Why should we hire you?
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Q3. What are your strengths and weaknesses?
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Q4. Tell me about yourself.
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Q1. Star delta connection Distribution transformer Colorcoding of conductor Earthing vs grounding Ques on machine efficiency and stability.
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Questions related to electrical engineering concepts such as star delta connection, distribution transformer, color coding of conductor, earthing vs grounding, machine efficiency and stability.
• Star delta connection is a method of starting three-phase induction motors.

• Distribution transformer is used to step down high voltage to low voltage for distribution purposes.

• Color coding of conductor is used to identify the func...read more
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