JGC Corporation Interview Questions and Answers

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Q1. What is transformer?
Ans. 
A transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.
• Consists of two coils of wire, known as primary and secondary coils

• Primary coil receives electrical energy and induces a magnetic field

• Magnetic field then induces a voltage in the secondary coil

• Used to step up or step down voltage levels in electrical systems
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Q2. What are the types of Rectifiers?
Ans. 
Types of rectifiers include half-wave, full-wave, and bridge rectifiers.
• Half-wave rectifier only allows one half of the AC input waveform to pass through

• Full-wave rectifier allows both halves of the AC input waveform to pass through

• Bridge rectifier uses four diodes to rectify the AC input waveform

• Examples include diode rectifiers and semiconductor rectifiers
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Q3. Difference between Synchronous and induction motor
Ans. 
Synchronous motors have constant speed and require external excitation, while induction motors have variable speed and are self-starting.
• Synchronous motors have a constant speed determined by the frequency of the power supply.

• Induction motors have variable speed depending on the load.

• Synchronous motors require external excitation to generate a magnetic field, while induction motors are self-starting.

• Synchronous motors ...read more
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Q4. What is Ohms law?
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Ohm's law states that the current flowing through a conductor is directly proportional to the voltage across it, and inversely proportional to the resistance of the conductor.
• Ohm's law is represented by the formula: V = I * R, where V is voltage, I is current, and R is resistance.

• It helps in calculating the relationship between voltage, current, and resistance in an electrical circuit.

• For example, if a circuit has a vo...read more
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Q1. Will you ready to go to abroad after 5 years?
Ans. 
Yes, I am open to the possibility of going abroad after 5 years for career advancement and new experiences.
• I am open to exploring international opportunities for career growth.

• I believe working abroad can provide valuable experiences and broaden my perspective.

• I am willing to adapt to new cultures and environments for professional development.
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Q2. Why you have not choose higher education
Ans. 
I chose to start working in the electrical field to gain practical experience and skills rather than pursuing higher education.
• Prefer hands-on learning over theoretical education

• Opportunity to gain real-world experience in the field

• Financial constraints prevented pursuing higher education

• Passionate about electrical work and wanted to start career sooner
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Q3. Family details and Occupation
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We were a panel of 7 members and were given a 10mins of time to choose a topic of our choice and begin the discussion

Q1. Questions were asked from tech stacks and projects mentioned in resume
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Q1. General questions
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Q1. What credential you possess for the position
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Q2. What can you contribute to the organization?
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Q1. What is the Bernoulli principle?
Ans. 
The Bernoulli principle states that as the speed of a fluid increases, its pressure decreases.
• The principle is named after Daniel Bernoulli, a Swiss mathematician and physicist.

• It is based on the conservation of energy principle.

• The principle is commonly used to explain the lift generated by an airplane wing.

• It also explains how a shower curtain is pulled inward when water flows out of a showerhead.

• The Bernoulli equati...read more
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Q2. The meaning of P&ID
Ans. 
P&ID stands for Piping and Instrumentation Diagram.
• P&ID is a schematic representation of a process system that shows the piping, equipment, and instrumentation involved.

• It provides detailed information about the process flow, control loops, and equipment connections.

• P&IDs are used by engineers and operators to understand and communicate how a system operates.

• They are essential in designing, constructing, and maintainin...read more
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