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10+ Haldiram Foods International Limited Interview Questions and Answers

Updated 6 Jan 2025

Q1. How do you derive frequency from free/forced vibrations ?

Ans.

Frequency can be derived from free/forced vibrations by analyzing the period of the vibrations.

  • Frequency is the reciprocal of the period of the vibration.

  • For free vibrations, the natural frequency of the system can be determined by analyzing the oscillations without any external force.

  • For forced vibrations, the frequency can be determined by analyzing the response of the system to an external force at different frequencies.

  • Frequency can also be calculated using the formula: f...read more

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Q2. How is antifrcition bearing differs from journal bearing

Ans.

Antifriction bearings use rolling elements to reduce friction, while journal bearings use a sliding motion.

  • Antifriction bearings use rolling elements like balls or rollers to reduce friction, while journal bearings use a sliding motion between the bearing surface and the shaft.

  • Antifriction bearings have lower friction and higher efficiency compared to journal bearings.

  • Examples of antifriction bearings include ball bearings, roller bearings, and needle bearings, while examples...read more

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Q3. 1. inputs required to select motor

Ans.

Inputs required to select motor include power requirements, speed, torque, voltage, current, duty cycle, environment, and budget.

  • Power requirements: Determine the amount of power needed for the application.

  • Speed: Decide on the desired speed of the motor.

  • Torque: Consider the required torque for the application.

  • Voltage and current: Ensure the motor is compatible with the available power supply.

  • Duty cycle: Determine how often and for how long the motor will be running.

  • Environmen...read more

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Q4. Write equation for modal analysis of rigid body ?

Ans.

Modal analysis of rigid body equation involves calculating natural frequencies and mode shapes.

  • Modal analysis involves determining the natural frequencies and mode shapes of a system.

  • The equation for modal analysis of a rigid body is typically represented as Kx = Mw^2x, where K is the stiffness matrix, M is the mass matrix, w is the angular frequency, and x is the mode shape vector.

  • The modal analysis equation helps in understanding the dynamic behavior of a rigid body structu...read more

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Q5. Explain about eigen values for free vibration ?

Ans.

Eigen values for free vibration represent the natural frequencies at which a system will vibrate without any external forces.

  • Eigen values are the values of natural frequencies at which a system vibrates without any external forces.

  • They are obtained by solving the characteristic equation of the system.

  • Each eigen value corresponds to a mode shape, which describes the pattern of vibration.

  • Higher eigen values indicate higher natural frequencies and shorter periods of vibration.

  • Ei...read more

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Q6. Heat exchanger coolant selection criterion

Ans.

Coolant selection for heat exchangers is based on factors like thermal conductivity, corrosion resistance, cost, and environmental impact.

  • Consider thermal conductivity of coolant to ensure efficient heat transfer

  • Select coolant with good corrosion resistance to prevent damage to heat exchanger

  • Evaluate cost of coolant to ensure it fits within budget constraints

  • Take into account environmental impact of coolant to comply with regulations

  • Examples: water, ethylene glycol, propylene...read more

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Q7. fully developed flow defination

Ans.

A fully developed flow definition outlines the sequence of steps and interactions in a process.

  • Identify the starting point and ending point of the flow

  • List all the steps involved in the process

  • Define the conditions or decisions that determine the flow of the process

  • Include any loops or branches in the flow

  • Specify the inputs and outputs of each step

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Q8. What is mass matrix ?

Ans.

Mass matrix is a mathematical representation of the mass distribution of a system in structural dynamics.

  • Mass matrix is used in structural dynamics to represent the mass distribution of a system.

  • It is a square matrix that relates the accelerations of different points in a structure to the forces acting on those points.

  • The mass matrix is typically diagonal for systems with uniform mass distribution.

  • In finite element analysis, the mass matrix is used to calculate the dynamic re...read more

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Q9. Fan selection criterion

Ans.

Fan selection criteria include airflow requirements, noise level, energy efficiency, size, and cost.

  • Consider the airflow requirements of the space being ventilated.

  • Evaluate the noise level produced by the fan to ensure it meets acceptable limits.

  • Look at the energy efficiency rating of the fan to minimize operating costs.

  • Choose a fan size that fits the space and installation requirements.

  • Compare the cost of different fan options to find the best value for the budget.

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Q10. How can you effectively sell your product in a competitive market?

Ans.

By understanding the market, highlighting unique selling points, building strong relationships, and providing excellent customer service.

  • Conduct thorough market research to understand competitors and customer needs.

  • Highlight the unique features and benefits of your product compared to competitors.

  • Build strong relationships with customers through personalized interactions and follow-ups.

  • Provide excellent customer service to ensure customer satisfaction and loyalty.

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Q11. Relay drivers working

Ans.

Relay drivers work to control the operation of relays in electrical systems.

  • Relay drivers are responsible for sending signals to activate or deactivate relays.

  • They ensure proper functioning of relays in various applications such as industrial automation, automotive systems, and electronic devices.

  • Relay drivers may use transistors, integrated circuits, or microcontrollers to control the relay operation.

  • They need to have a good understanding of electrical circuits and signal pr...read more

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Q12. Flip-flops diagram

Ans.

Flip-flops are digital circuits that store a single bit of data using two stable states.

  • Flip-flops are used in digital electronics to store binary data.

  • They have two stable states: 0 and 1.

  • Common types of flip-flops include D flip-flop, JK flip-flop, and T flip-flop.

  • Flip-flops are often used in sequential logic circuits to store and transfer data.

  • They can be triggered by a clock signal to change their state.

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Q13. What is the market share ratio?

Ans.

Market share ratio is the percentage of total sales in a market that is captured by a company or product.

  • Market share ratio is calculated by dividing a company's sales by the total sales in the market and multiplying by 100.

  • It is used to measure a company's competitiveness and performance in a specific market.

  • For example, if a company has sales of $1 million in a market with total sales of $10 million, its market share ratio would be 10%.

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Q14. What is marketing and why do you like marketing

Ans.

Marketing is the process of promoting and selling products or services to customers.

  • Marketing involves identifying customer needs and wants

  • Creating and communicating a message that resonates with the target audience

  • Developing strategies to reach and engage potential customers

  • Measuring and analyzing the effectiveness of marketing efforts

  • I like marketing because it allows me to be creative and strategic while helping businesses grow and succeed

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