Power Mech Projects Interview Questions, Process, and Tips

Q1. Generator protection Transformer protection Single line electrical diagram Switchyard single line diagram HT and LT breaker closing coil and tripping coil
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Q1. Generator protection , transformer protection
Ans. Generator :- stator short circuit , earth fault ,rotor earth fault, low forword power , reverse power flow, low frequency,over frequency
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Q1. What is safety meeting
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Q2. What is excavation
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Q3. What the evaluation
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1st round is conducted with simple aptitude and civil basic queations. By getting above of 25 we can qualify the first round out of 40 marks

Q1. They asked me basic civil subject queations.
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Q1. Will u agree to relocate all over the india.
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Q1. Target mean strength of M-35 Grade concrete
Ans. 
Target mean strength of M-35 Grade concrete is 35 MPa.
• The target mean strength of M-35 Grade concrete is 35 MPa.

• M-35 Grade concrete is designed for structural applications requiring high strength.

• Quality control measures should be in place to ensure the concrete meets the target strength.
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Q2. What is the soil compaction percentage to be achieved in Embankment
Ans. 
Soil compaction percentage in embankment typically ranges from 90% to 95% depending on the type of soil and project specifications.
• Soil compaction percentage in embankment is usually between 90% to 95%

• The exact percentage may vary based on the type of soil being compacted

• Project specifications and requirements will dictate the specific compaction percentage to be achieved
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Q1. What is your previous experience
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Q2. What is your salary experience
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Q1. In TRANSFORMER PROTECTION
Ans. 
Transformer protection is essential to prevent damage and ensure safe operation.
• The protection system should detect and isolate faults quickly.

• Common protection methods include overcurrent, differential, and distance protection.

• Proper maintenance and testing of protection equipment is crucial.

• Examples of transformer protection devices include Buchholz relays, pressure relief devices, and temperature sensors.
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Q2. What is Master trip relay
Ans. 
Master trip relay is a protective relay that trips all the circuit breakers in a power system in case of a fault.
• It is used to protect the power system from damage due to faults

• It is connected to all the circuit breakers in the system

• It operates when a fault is detected and trips all the circuit breakers simultaneously

• It is an important component of the protection system in power plants and substations
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Q1. Event and DR IN SCADA OPRATION
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Event and DR are crucial in SCADA operation for ensuring system reliability and continuity.
• Event refers to any occurrence that requires attention or action, such as a fault or alarm.

• DR (Disaster Recovery) is a plan for restoring normal system operation in case of a catastrophic event.

• SCADA systems rely on event and DR management to ensure uninterrupted operation and prevent downtime.

• Examples of events in SCADA operatio...read more
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Q2. In Line protection which relay use
Ans. 
Line protection relays are used for protecting transmission lines from faults.
• Line protection relays are used to detect faults in transmission lines and isolate them from the system.

• These relays can be of different types such as distance, differential, and directional relays.

• Distance relays measure the impedance of the line and trip when the impedance falls below a certain threshold.

• Differential relays compare the curr...read more
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Q3. GIS SUBSTATION SWITCHGEAR OPRATION PROCESS
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