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Indian Oil Corporation Chemical Plant Operator Interview Questions and Answers
Indian Oil Corporation Chemical Plant Operator Interview Experiences
1 interview found
I applied via Recruitment Consulltant and was interviewed in Mar 2022. There were 2 interview rounds.
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Electrical Supervisor Interview Questions & Answers
Hindustan Petroleum
Anonymous
posted on 5 Jan 2021
Interview Questionnaire
7 Questions
- Q1. What are the transformer losses
- Ans.
Transformer losses refer to the energy losses that occur during the operation of a transformer.
Transformer losses include copper losses and iron losses.
Copper losses occur due to the resistance of the transformer windings.
Iron losses, also known as core losses, occur due to hysteresis and eddy currents in the transformer core.
Copper losses can be minimized by using larger conductor sizes and reducing the resistance of ...
- Q2. Efficiency of transformer?
- Ans.
Efficiency of transformer is the ratio of output power to input power.
Efficiency is affected by factors such as core losses, winding resistance, and load impedance.
Efficiency can be improved by using high-quality materials, proper design, and regular maintenance.
Efficiency is expressed as a percentage and can range from 50% to 99% depending on the transformer type and application.
- Q3. Motor operated valve how work
- Q4. Breaker maintenance ppm
- Q5. Non sparking equipment and lights technique
- Ans.
Non-sparking equipment and lights are used in hazardous environments to prevent explosions.
Non-sparking tools are made of materials that do not create sparks when struck or rubbed against each other.
Non-sparking lights use LED technology and are enclosed in a housing that prevents sparks from escaping.
These techniques are commonly used in industries such as oil and gas, chemical, and mining.
Examples of non-sparking too...
- Q6. Fire system handling
- Q7. Gas leaked detection system
Selected
I applied via AmbitionBox and was interviewed in Nov 2022. There were 4 interview rounds.
(2 Questions)
- Q1. Branches Of Eletrical Equipment
- Ans.
Electrical equipment can be classified into several branches based on their functions and applications.
Power equipment - transformers, generators, motors, switchgear
Lighting equipment - bulbs, tubes, fixtures
Communication equipment - telephones, radios, antennas
Control equipment - relays, circuit breakers, controllers
Electronic equipment - computers, TVs, audio systems
Testing equipment - multimeters, oscilloscopes, pow
- Q2. Transformers,Basic Electrical
(2 Questions)
- Q1. Electrical Engineering
- Q2. Motor, Generator
(1 Question)
- Q1. Resources of Earth
- Ans.
Earth has various resources including minerals, water, air, and energy sources.
Minerals such as gold, silver, copper, and iron are found in the earth's crust.
Water is a vital resource for all living beings and is found in oceans, rivers, and lakes.
Air is composed of various gases such as oxygen, nitrogen, and carbon dioxide.
Energy sources include fossil fuels, solar energy, wind energy, and hydroelectric power.
Other re...
Ram Prasad
Ardhamatic,reasoning
Full stack Java Developer
(1 Question)
- Q1. In software development or Electrical and electronic engineering
I applied via Campus Placement and was interviewed in Aug 2021. There were 5 interview rounds.
No
C, C++ languages learning now
(5 Questions)
- Q1. What are your salary expectations?
- Q2. What is your family background?
- Q3. What are your strengths and weaknesses?
- Q4. Tell me about yourself.
- Q5. Carefully read the job description and understand every point
(3 Questions)
- Q1. What is your family background?
- Q2. What are your strengths and weaknesses?
- Q3. Tell me about yourself.
Interview Preparation Tips
- Electrical Engineering
Research company
Electrical Supervisor Interview Questions & Answers
Reliance Industries
Anonymous
posted on 20 Jul 2024
(5 Questions)
- Q1. Electrical engineer
- Q2. Electrical supervisor
- Q3. Diploma electrical
- Q4. I am interested
- Q5. Work in interested
Interview Preparation Tips
Interview Questionnaire
8 Questions
- Q1. WHAT IS DROPOUT SWITCH
- Ans.
A dropout switch is an electrical switch that opens when the voltage drops below a certain level.
It is used to protect electrical equipment from damage due to low voltage.
It can be manually or automatically reset.
Examples include low voltage disconnect switches and thermal overload switches.
It is commonly used in battery systems to prevent over-discharge.
It is also used in power distribution systems to prevent damage t
- Q2. WHAT IS THE DIOD
- Ans.
A diode is an electronic component that allows current to flow in only one direction.
It has two terminals, an anode and a cathode.
It is commonly used in rectifiers to convert AC to DC.
It can also be used as a voltage regulator or a signal modulator.
It is made of semiconductor materials such as silicon or germanium.
It has a forward voltage drop that varies depending on the material and temperature.
- Q3. WHAT IS THE HRC FUSE
- Ans.
HRC fuse stands for High Rupturing Capacity fuse. It is a type of fuse that can withstand high fault currents.
HRC fuse is designed to protect electrical equipment from overcurrents.
It has a high breaking capacity and can interrupt high fault currents without causing damage to the equipment.
HRC fuse is commonly used in industrial and commercial applications.
It is available in different sizes and ratings to suit differen...
- Q4. WHAT IS THE 4 POLE MOTER RPM..
- Ans.
The RPM of a 4 pole motor is determined by the frequency of the power supply and the number of poles.
The RPM of a 4 pole motor is directly proportional to the frequency of the power supply.
The RPM of a 4 pole motor is inversely proportional to the number of poles.
For example, a 4 pole motor connected to a 60 Hz power supply will have an RPM of approximately 1800.
If the power supply frequency is increased to 120 Hz, the...
- Q5. CAN U CONVERT 10KW MOTER INTO HP
- Ans.
Yes, 10 kW is equal to 13.41 HP.
1 kW = 1.34 HP
Therefore, 10 kW = 10 x 1.34 = 13.41 HP
Conversion formula: HP = kW x 1.34
- Q6. WHAT IS ISOLATER
- Ans.
An isolator is an electrical switch that isolates a part of the circuit from the rest for maintenance or safety purposes.
Isolators are used to disconnect a circuit from the power source.
They are often used in high voltage applications.
Isolators are different from circuit breakers or fuses, as they do not provide protection against overloads or short circuits.
They are commonly used in industrial settings and power distr...
- Q7. WHAT IS THE DC VOLTAGE AND AC VOLTAGE
- Ans.
DC voltage is a constant voltage while AC voltage changes direction periodically.
DC voltage is a steady voltage that flows in one direction only
AC voltage changes direction periodically and has a frequency measured in Hertz
DC voltage is commonly used in batteries and electronic devices
AC voltage is used in household power outlets and electrical grids
- Q8. WHACH MOTER CAN CONTROL SPEAD
- Ans.
A motor's speed can be controlled by a variable frequency drive (VFD).
A VFD can adjust the frequency of the electrical power supplied to the motor, which in turn controls its speed.
VFDs are commonly used in industrial settings to control the speed of motors powering machinery.
VFDs can also improve energy efficiency by reducing the amount of power consumed by the motor.
Other methods of controlling motor speed include us...
Skills evaluated in this interview
I applied via Company Website and was interviewed in Jun 2022. There was 1 interview round.
(2 Questions)
- Q1. I am Ajay Kumar ghadai, I am form bhatrak, I have complete my ITI industrial technique institute Bhadrak.2011 ,
- Q2. I am continue in Infosys limited company electrical supervisor post in 5 years experience joining date 2018 to continue Sobha development limited 5 years experience joining date 2013 to 2018
Interview Preparation Tips
10 year experience
Chemical Plant Operator Interview Questions & Answers
Reliance Industries
Anonymous
posted on 8 Sep 2022
I applied via Recruitment Consulltant and was interviewed before Sep 2021. There was 1 interview round.
(4 Questions)
- Q1. Hto mto simple questions
- Q2. About extra qualification about yourself
- Q3. Why do you want to join
- Q4. What do you see your future here
Interview Preparation Tips
Production Supervisor Interview Questions & Answers
Reliance Industries
Anonymous
posted on 3 May 2022
I applied via Naukri.com and was interviewed before May 2021. There was 1 interview round.
(1 Question)
- Q1. Which týpes uses valve in chemical industries
- Ans.
Various types of valves are used in chemical industries for different purposes.
Gate valves are commonly used in chemical industries for on/off control of flow.
Globe valves are used for regulating flow and controlling pressure.
Ball valves are suitable for high-pressure applications and provide tight shut-off.
Butterfly valves are used for throttling and controlling flow.
Diaphragm valves are used for handling corrosive an...
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