APL Apollo Tubes Mechanical Maintenance Engineer Interview Questions, Process, and Tips

Q1. Shaft daimeter 40 mm wy bearings no
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Q2. Ferro silicon melting point wy
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Q3. Which composition is a ci casting
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CI casting refers to cast iron casting, which is made from a composition of iron, carbon, and silicon.
• CI casting stands for cast iron casting.

• It is made from a composition of iron, carbon, and silicon.

• The carbon content in CI casting is typically between 2.1% and 4%.

• The silicon content in CI casting is typically between 1% and 3%.

• CI casting is known for its excellent castability, good machinability, and high wear resis
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Q4. High crome metal pouring temperature
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The pouring temperature of high chrome metal is typically between 1,600 to 1,800 degrees Celsius.
• High chrome metal is commonly used in applications that require high temperature resistance and corrosion resistance.

• The pouring temperature is crucial to ensure proper flow and solidification of the metal.

• The specific pouring temperature may vary depending on the exact composition of the high chrome metal and the desired p...read more
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Q5. Maild steel campotion
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Q1. What is motor?and explain working of motor
Ans. 
A motor is a device that converts electrical energy into mechanical energy to produce motion.
• Motors can be classified into different types such as DC motors, AC motors, and stepper motors.

• The basic working principle of a motor involves the interaction of magnetic fields to generate force and motion.

• In a DC motor, current flows through a coil within a magnetic field, creating a force that rotates the motor shaft.

• In an A...read more
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Q2. Define transformer? Explain types of transformer?
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A transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.
• Transformers are used to increase or decrease voltage levels in electrical circuits.

• There are two main types of transformers: step-up transformers and step-down transformers.

• Step-up transformers increase voltage levels, while step-down transformers decrease voltage levels.

• Other types of transformers...read more
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Q3. Different between switch, isolator and circuit breaker?
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Switch is used to control the flow of electricity, isolator is used for isolating a circuit, and circuit breaker is used for protecting the circuit from overloads.
• Switch is used to open or close an electrical circuit, allowing or stopping the flow of electricity.

• Isolator is used to disconnect a circuit from the power supply for maintenance or repair purposes.

• Circuit breaker is a device designed to protect an electrical...read more
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Q4. What is induction motor?
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An induction motor is a type of AC motor where power is supplied to the rotor by electromagnetic induction.
• Consists of a stator and a rotor

• Does not require any physical connection between the rotor and the stator

• Commonly used in industrial applications for driving pumps, compressors, and fans
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Q5. How many types of motor?
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There are two main types of motors: AC motors and DC motors.
• AC motors: Alternating current motors that are commonly used in household appliances and industrial applications.

• DC motors: Direct current motors that are often used in battery-operated devices and automotive applications.
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Q6. Explain difference between switch, isolator and circuit breaker?
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Switch is used to make or break an electrical circuit, isolator is used for isolating a circuit for maintenance, and circuit breaker is used for protecting the circuit from overloads and short circuits.
• Switch is used to manually open or close an electrical circuit.

• Isolator is used to isolate a circuit for maintenance purposes, ensuring no current flows through it.

• Circuit breaker is a safety device that automatically in...read more
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Q7. Explain how many types of fault?
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There are three main types of faults: normal faults, reverse faults, and strike-slip faults.
• Normal faults occur when the hanging wall drops down relative to the footwall. Example: Basin and Range Province in the western United States.

• Reverse faults occur when the hanging wall moves up relative to the footwall. Example: Rocky Mountains in North America.

• Strike-slip faults occur when the blocks slide past each other horiz...read more
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Q1. What to conveyor belt related questions
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Q2. Why to conveyor line experience in jspl
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Conveyor line experience in JSPL is relevant to the Production Engineer role.
• JSPL has a large-scale conveyor system for transporting raw materials and finished products.

• Experience with conveyor systems is important for optimizing production efficiency.

• Knowledge of conveyor maintenance and troubleshooting is also valuable.

• JSPL's conveyor system includes various types of conveyors such as belt, screw, and bucket conveyor...read more
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Q3. This types conveyor maintenance
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Q1. Rolling mill hydraulic systems and maintenance
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Q2. Hydraulic pump and valve maintenance
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