TRL Krosaki Refractories Interview Questions, Process, and Tips

Q1. What is the unit of resistance?
Ans. 
The unit of resistance is ohm (Ω).
• The unit of resistance is measured in ohms (Ω).

• Resistance is denoted by the symbol 'R' in equations.

• One ohm is equal to one volt per ampere (1 Ω = 1 V/A).
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Q2. What is the meaning of current?
Ans. 
Current is the flow of electric charge in a circuit.
• Current is the rate of flow of electric charge in a circuit.

• It is measured in Amperes (A).

• Current flows from positive to negative terminal in a circuit.

• There are two types of current - AC (Alternating Current) and DC (Direct Current).
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Q3. What is magnet?
Ans. 
A magnet is an object that produces a magnetic field and attracts certain materials like iron.
• A magnet has two poles - north and south.

• Opposite poles attract each other while like poles repel.

• Magnets can be natural (lodestone) or man-made (permanent magnets).
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Q4. What is the working principle of transformer?
Ans. 
Transformer works on the principle of electromagnetic induction to transfer electrical energy between two or more circuits.
• Transformers have two coils of wire, known as primary and secondary coils.

• When an alternating current flows through the primary coil, it creates a changing magnetic field.

• This changing magnetic field induces a voltage in the secondary coil, transferring electrical energy.

• The ratio of the number of ...read more
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Q5. Value of Indian frequency?
Ans. 
The value of Indian frequency is 50 Hz.
• The standard frequency used in India for electrical power distribution is 50 Hz.

• This frequency is used for both residential and industrial purposes.

• It is important for ensuring compatibility of electrical equipment and appliances.

• In contrast, countries like the United States use a frequency of 60 Hz.
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Q6. What is the unit of current?
Ans. 
The unit of current is Ampere (A).
• The unit of current is Ampere (A)

• It is named after the French physicist Andre-Marie Ampere

• Current is the flow of electric charge in a circuit
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Q7. What is the meaning magnetic field?
Ans. 
A magnetic field is a region around a magnetic material or a moving electric charge within which the force of magnetism acts.
• A magnetic field is produced by moving electric charges or magnetic materials.

• It exerts a force on other moving charges and magnetic materials within its vicinity.

• The strength and direction of a magnetic field can be represented by magnetic field lines.

• Examples include the Earth's magnetic field
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Q8. Law's of resistance?
Ans. 
The laws of resistance describe how the resistance of a material is affected by factors such as length, cross-sectional area, and temperature.
• Resistance is directly proportional to the length of the material - longer materials have higher resistance.

• Resistance is inversely proportional to the cross-sectional area of the material - larger cross-sectional areas have lower resistance.

• Resistance increases with temperature ...read more
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Q9. Relationship between current, voltage and resistance?
Ans. 
The relationship between current, voltage, and resistance is described by Ohm's Law.
• Ohm's Law states that the current flowing through a conductor is directly proportional to the voltage applied across it and inversely proportional to the resistance of the conductor.

• Mathematically, Ohm's Law is expressed as I = V/R, where I is the current in Amperes, V is the voltage in Volts, and R is the resistance in Ohms.

• This relati...read more
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Q1. Why you want to join in TRL.
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Q2. What is your weaknesses
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Q1. Thermodynamics What is property What is state Laws of TD
Ans. 
Properties in thermodynamics refer to characteristics of a system, state refers to the condition of a system at a specific time, and laws of thermodynamics govern energy transfer and transformation.
• Property in thermodynamics: Any characteristic of a system that can be measured, such as temperature, pressure, or volume.

• State in thermodynamics: The condition of a system at a specific time, described by its properties.

• Law...read more
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Q2. SOM questions Modulous of rigidity Stiffness
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Q1. What are your further plans?
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Q2. Ready or not for relocation.
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