ELGI Equipments
10+ Haldiram Foods International Limited Interview Questions and Answers
Q1. How do you derive frequency from free/forced vibrations ?
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
Q2. How is antifrcition bearing differs from journal bearing
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
Q3. 1. inputs required to select motor
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
Q4. Write equation for modal analysis of rigid body ?
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
Q5. Explain about eigen values for free vibration ?
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
Q6. Heat exchanger coolant selection criterion
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
Q7. fully developed flow defination
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
Q8. What is mass matrix ?
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
Q9. Fan selection criterion
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.
Q10. How can you effectively sell your product in a competitive market?
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.
Q11. Relay drivers working
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
Q12. Flip-flops diagram
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.
Q13. What is the market share ratio?
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%.
Q14. What is marketing and why do you like marketing
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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