BPCL Kochi Oil Refinery Graduate Apprentice Interview Questions and Answers

I applied for the Finance Department, which was based on Accounting and Finance 75% and general aptitude and English 25%.

Q1. No questions were asked just document verification.
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Q1. Basic on your Engineering Background
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Q2. Area of Interest and Basic Engineering knowledge and On Your academic Projects
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Q1. 1. Tell me about your self. 2. Why you wanted to do the Apprenticeship? 3. What you wanted to become? 4. Your Hobbies
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Q1. Not much of questions it was just medical Checkup
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Q1. What is principle of generator
Ans. 
The principle of a generator is based on electromagnetic induction, where a changing magnetic field induces an electric current in a conductor.
• Generators convert mechanical energy into electrical energy

• They work on the principle of electromagnetic induction

• A rotating coil within a magnetic field generates an electric current

• The direction of the current is determined by Fleming's right-hand rule
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Q2. What is current transformer
Ans. 
A current transformer is a type of instrument transformer that is used to step down high currents to a lower, more manageable level for measurement or protection purposes.
• Current transformers are typically used in conjunction with ammeters, wattmeters, and protective relays.

• They have a primary winding that is connected in series with the circuit carrying the current to be measured, and a secondary winding that is conne...read more
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Q3. What is the principle of motor
Ans. 
The principle of motor refers to the basic concept of how motors work to convert electrical energy into mechanical energy.
• Motors operate based on the principle of electromagnetic induction

• Electric current flowing through a wire creates a magnetic field

• This magnetic field interacts with other magnetic fields to produce motion

• Motors can be DC motors, AC motors, or stepper motors
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Q4. What is relationship between speed and frequency in motor
Ans. 
Speed and frequency in a motor are directly proportional to each other.
• Speed of a motor is directly proportional to the frequency of the power supply.

• Increasing the frequency of the power supply will increase the speed of the motor.

• Conversely, decreasing the frequency will decrease the speed of the motor.

• This relationship is important in controlling the speed of motors in various applications.
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Q5. Do you have any previous experience??
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Q6. What are the favorite subjects in your electrical engineering
Ans. 
My favorite subjects in electrical engineering are power systems, control systems, and electronics.
• Power systems: I enjoy studying the generation, transmission, and distribution of electrical power.

• Control systems: I find the design and analysis of control systems fascinating.

• Electronics: I am interested in learning about electronic circuits and devices.
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Q7. Why do you want to join??
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Q8. Types of cables and explain
Ans. 
Types of cables include coaxial, twisted pair, fiber optic, and HDMI cables.
• Coaxial cable: used for cable television and internet connections

• Twisted pair cable: commonly used for Ethernet networks

• Fiber optic cable: transmits data using light pulses

• HDMI cable: used to connect audio and video devices
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