Jindal Steel and Power Mining Engineer Interview Questions and Answers

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Q1. Difference between space and burden of blasting
Ans. 
Space is the distance between blastholes, while burden is the distance from the blasthole to the free face of the rock.
• Space is the distance between blastholes in a blast pattern.

• Burden is the distance from the blasthole to the free face of the rock.

• Space affects the fragmentation and distribution of the blasted material.

• Burden influences the amount of energy transferred to the rock mass.

• Optimal space and burden ratios
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Q2. Types of coal grade
Ans. 
Coal grades are categorized based on their carbon content and energy value.
• Coal grades include lignite, sub-bituminous, bituminous, and anthracite

• Higher carbon content coal grades have higher energy value

• Anthracite is the highest grade coal with the highest carbon content and energy value
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Q1. Mechanical testing
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Q2. Like Api audit , NABL audit , ISO and safety
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Q3. Quality manual,Quality objective, histogram,sop
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Q4. Standards and specification
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Q5. Internal audit,capa,moc,policy,
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Q1. What is thermocouple
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Q2. What is rtd
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Q1. Machine transmission distribution
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Q2. Electric generation
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Q3. Electric measurement
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Q1. Electrical department
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Q2. What is MCC PCC PANEL
Ans. 
MCC stands for Motor Control Center and PCC stands for Power Control Center. They are electrical panels used to control and distribute power to motors and other electrical equipment.
• MCC panels are used to control and distribute power to motors in industrial settings.

• PCC panels are used to control and distribute power to various electrical equipment.

• Both panels play a crucial role in ensuring efficient and safe operatio...read more
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Q1. Electrical materials
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Q2. Power system protection
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Q3. Electrical energy system
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Q4. High voltage direct current
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Q5. Electrical control system
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Q1. Electrical management
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Q1. Transformer me dub-11 ka matalab kya hota hai
Ans. Maine btaya “d” ka matalab Maine btaya transformer ka primary winding delta connect and “y” ka matalab Maine btaya transformer ka secondary winding star me connect hoti hai and “11” ka matalab hota hai transformer ka phase angle
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Q2. What is thyrestor
Ans. 
A thyristor is a semiconductor device that acts as a switch and can handle high voltages and currents.
• It has three terminals: anode, cathode, and gate

• It can be turned on by applying a small current to the gate terminal

• It can handle high power and is commonly used in power control applications

• Examples include AC motor speed control, lighting dimming, and power supplies
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Q1. What is thermocouple?
Ans. 
A thermocouple is a device that measures temperature by detecting the voltage difference between two different metals.
• Consists of two different metal wires joined at one end

• Produces a voltage that varies with temperature

• Used in temperature measurement and control systems

• Commonly used in industrial applications such as furnaces and boilers
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Q2. What is ohomic value of PT-100?
Ans. 
The ohmic value of PT-100 is 100 ohms at 0°C.
• PT-100 is a type of platinum resistance thermometer.

• It has a resistance of 100 ohms at 0°C.

• The resistance increases with temperature at a rate of 0.385 ohms/°C.

• PT-100 is commonly used in industrial temperature measurement applications.
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Q3. What is calibration 3.0 and 5.0?
Ans. 
Calibration 3.0 and 5.0 refer to the accuracy level of a measuring instrument.
• Calibration 3.0 means the instrument has an accuracy level of 0.3% of the full scale reading.

• Calibration 5.0 means the instrument has an accuracy level of 0.5% of the full scale reading.

• The higher the calibration number, the more accurate the instrument is.

• Calibration is the process of adjusting an instrument to ensure its accuracy.

• Calibratio...read more
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