Bharat Petroleum Graduate Apprentice Interview Questions and Answers for Experienced

Technical and non technical questions objective type

Q1. Pump compressor and heat exchanger working
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Q1. What is current transformer.
Ans. 
A current transformer is a device used to measure or monitor electric current in high voltage systems.
• It is a type of instrument transformer that steps down high current to a lower value suitable for measurement.

• It consists of a primary winding and a secondary winding, with the primary winding connected in series with the current to be measured.

• The secondary winding is connected to a measuring or monitoring device.

• The ...read more
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Q2. What is power system.
Ans. 
Power system is a network of electrical components used to generate, transmit, and distribute electricity.
• Power system includes power generation plants, transmission lines, substations, and distribution networks.

• It is responsible for delivering electricity from power plants to homes, businesses, and industries.

• Power system engineers design, operate, and maintain the system to ensure reliable and efficient electricity s...read more
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Q3. Combination of power generation , transmission and distribution we will call power systems.
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Q4. What is earthing ,why it is ?
Ans. 
Earthing is the process of connecting electrical equipment to the earth to prevent electric shock and damage to the equipment.
• Earthing provides a path for the fault current to flow to the ground instead of passing through the human body.

• It helps in stabilizing the voltage and reducing the risk of electrical fires.

• Earthing is essential for electrical safety and is required by electrical codes and regulations.

• Examples of...read more
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Q5. Earthing means we are providing a low resistance path to the body of m/c whenever surge arrestors/strikes are came then that current will pass through earth wire. We will do parallel earthing two provide l...read more
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Q6. Self introduction, again asked regarding education background.
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Q1. Motor speed relationship between pole and frequency formula
Ans. 
The motor speed is directly proportional to the number of poles and the frequency of the power supply.
• Motor speed is determined by the number of poles and the frequency of the power supply.

• The formula to calculate the motor speed is: Speed = (120 * Frequency) / Number of Poles.

• Higher frequency or more poles result in higher motor speed.

• Lower frequency or fewer poles result in lower motor speed.
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Maths, gd, gk and english also with major subject question

Q1. Screeting for the interview and docmenting
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Q2. About yourself and family background
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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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80 questions from technical and 20 questions general

Q1. Technical questions form branch related
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Q2. Entropy, law of thermodynamics,pump classification,type of pump, entropy generation, enthalpy, turbine, compressor, specific speed of turbine and many questions
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Q1. Medical examination like different types of blood test aids test, Vidal test, ECG, lungs test etc
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Q1. Technical question based on your branch
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