Indian Navy Naval Architect Interview Questions and Answers

1 hr and various apti topics

Q1. What are your strengths
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Q2. How do gas turbine engines work
Ans. 
Gas turbine engines work by compressing air, mixing it with fuel, igniting the mixture, and using the hot exhaust gases to spin a turbine.
• Air is drawn into the engine and compressed by a compressor

• Fuel is injected and mixed with the compressed air

• The mixture is ignited, causing a rapid expansion of gases

• The hot exhaust gases are used to spin a turbine, which drives the compressor and generates thrust

• Examples: Jet engin
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Q1. What is the sheet metal process
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Sheet metal process involves cutting, bending, and assembling metal sheets to create various products.
• Cutting: Using tools like shears, lasers, or plasma cutters to cut the metal sheets into desired shapes

• Bending: Utilizing press brakes to bend the metal sheets at specific angles

• Assembling: Joining the bent and cut metal sheets together using techniques like welding or fasteners

• Finishing: Applying coatings or finishes ...read more
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Q2. Types of Tolerances and explanation
Ans. 
Types of tolerances include bilateral, unilateral, limit, and fit tolerances.
• Bilateral tolerance: Allows for variation in both directions from the nominal dimension.

• Unilateral tolerance: Allows for variation in only one direction from the nominal dimension.

• Limit tolerance: Specifies the maximum and minimum acceptable limits for a dimension.

• Fit tolerance: Determines the acceptable range of tightness or looseness between
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Q1. Define the factor of safety?
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Factor of safety is a design parameter that accounts for uncertainties in material properties and loading conditions.
• Factor of safety is the ratio of the maximum stress a material can withstand to the maximum stress it is subjected to in a given application.

• It ensures that the structure or component will not fail under normal operating conditions.

• Higher factor of safety values indicate a more conservative design approa...read more
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Q2. What is tolerance?
Ans. 
Tolerance refers to the allowable variation in dimensions or properties of a part or product.
• Tolerance is important in engineering to ensure proper fit and function of components.

• It is typically specified as a range of acceptable values, such as +/- 0.1mm.

• Tolerance can be applied to dimensions, material properties, surface finish, etc.

• For example, a hole may have a tolerance of +/- 0.05mm to allow for proper alignment
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Q1. What is Runge kutt mthod used for?
Ans. 
Runge Kutta method is used for numerical solutions of ordinary differential equations.
• Numerical method for solving initial value problems in differential equations

• More accurate than Euler's method

• Commonly used in engineering and physics simulations

• Examples: RK2, RK4, RK45
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Q2. What is Hookes law
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Hooke's law states that the force needed to extend or compress a spring by a certain distance is proportional to that distance.
• Describes the relationship between the force applied to a spring and the resulting displacement

• Mathematically represented as F = kx, where F is the force, k is the spring constant, and x is the displacement

• Used in mechanical engineering for designing springs, shock absorbers, and other elastic
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Q1. GD and T Tolerance
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Q1. Explain working or upstream and downstream regulators
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Upstream regulators control the input flow while downstream regulators control the output flow in a system.
• Upstream regulators adjust the pressure or flow rate of the input fluid before it enters a system

• Downstream regulators control the pressure or flow rate of the output fluid after it exits a system

• Upstream regulators are typically located before the system while downstream regulators are located after the system

• Exa...read more
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Q1. Why should we hire you ?
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Q1. Explain your strengths specified on the resume
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