Lohia Aerospace Interview Questions and Answers

I joined as GET and aptitude test was seemed easy.

Q1. What is your favorite subject?
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Q2. What is critical speed?
Ans. 
Critical speed is the speed at which a rotating object experiences resonance and begins to vibrate uncontrollably.
• It is the speed at which the natural frequency of the object matches the frequency of its rotation.

• It can cause damage to the object and surrounding equipment.

• It is important to calculate critical speed in order to avoid resonance and vibration issues.

• Examples include turbine rotors, drive shafts, and centr
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Q3. How do u design a shaft?
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Designing a shaft involves determining its dimensions, material, and manufacturing process.
• Determine the required torque and power to be transmitted

• Select appropriate material based on strength, weight, and cost

• Calculate the shaft diameter and length based on the torque and bending stress

• Choose a manufacturing process such as forging, casting, or machining

• Consider factors such as surface finish, tolerances, and heat tr...read more
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Q4. Which one is better for good weight to strength ratio? Hollow or solid?
Ans. 
Hollow structures have a better weight to strength ratio than solid structures.
• Hollow structures are lighter than solid structures of the same material and size.

• Hollow structures distribute weight more evenly, reducing stress points.

• Hollow structures are often used in aerospace and automotive industries for their weight-saving properties.

• Solid structures may be stronger in certain applications, such as load-bearing col
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Q5. What is equation of Castigliano's theorem?
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Castigliano's theorem relates the partial derivative of the strain energy to the applied loads.
• Castigliano's theorem is used to determine the deflection of a structure under a given load.

• It is based on the principle of minimum potential energy.

• The theorem states that the partial derivative of the strain energy with respect to a force is equal to the displacement caused by that force.

• It can be used to solve for unknown ...read more
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Q1. Are you ready to relocate across India?
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Aptitude, verbal, questions on op-amps

Q1. Tell me about yourself explain your project asked some questions based on our project favorite subject (questions based on that subject)
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Q1. About your previous work
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Q2. About core technical
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Q1. General review of previous interview
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Q1. About your personal and the you are presenting
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Q1. It was purely technical based on my domain experience.
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Q1. It was technical plus HR kind of interview by my hiring manager.
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Q1. Dwara tha npn transistor symbol
Ans. 
The symbol for an NPN transistor consists of an arrow pointing outwards from the base.
• NPN transistors have three layers: N-type semiconductor between two P-type semiconductors

• The arrow points away from the base terminal

• Commonly used in amplification and switching circuits
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Q2. Resistor parallel and serial block diagram
Ans. 
Resistors connected in parallel have the same voltage across them, while resistors connected in series have the same current flowing through them.
• In a parallel circuit, the voltage across each resistor is the same.

• In a series circuit, the current through each resistor is the same.

• Parallel resistors have an equivalent resistance calculated as 1/R_total = 1/R1 + 1/R2 + ...

• Series resistors have an equivalent resistance ca
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Q3. Ohm law definition
Ans. 
Ohm's law defines the relationship between voltage, current, and resistance in an electrical circuit.
• 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.

• The formula for Ohm's law is V = I * R, where V is voltage, I is current, and R is resistance.

• It is named after German physicist Georg Sim...read more
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Q4. What is capacitor and resistor
Ans. 
A capacitor stores electrical energy in an electric field, while a resistor limits the flow of current in a circuit.
• Capacitor stores energy in an electric field

• Resistor limits the flow of current in a circuit

• Capacitors are used in filtering, timing circuits, and energy storage

• Resistors are used to control current flow, voltage division, and heat generation
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Q1. Tell me about Self introduce yourself?
Ans. 
I am a motivated and enthusiastic individual with a strong educational background and a passion for learning and professional growth.
• Start by stating your name and current educational background.

• Highlight any relevant work experience or internships.

• Mention your key skills and strengths.

• Discuss your career goals and aspirations.

• Conclude by expressing your enthusiasm for the opportunity and your willingness to contribute
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Q2. Any previous experience?
Ans. 
Yes, I have previous experience in a similar role as a Graduate Apprentice.
• I have worked as a Graduate Apprentice at XYZ Company for 6 months.

• During my apprenticeship, I gained hands-on experience in various aspects of the job.

• I successfully completed projects and tasks assigned to me, demonstrating my skills and abilities.

• I received positive feedback from my supervisors and colleagues for my performance.

• I also activel...read more
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