CASE Construction Equipment Vehicle Testing Engineer Interview Questions and Answers

Q1. Discussion about previous experiences
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Q1. Conducted Tool test
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Mining engineering releted all questions

Mining engineering releted

All members are morning shift discussion

Q1. Prasnal details
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Q2. Qlifiqation all questions
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Q1. Mining prosess warck
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Q2. Mining department quantity
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Morning shift discussion

Q1. Basic In my Branch Mechanical
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Q2. Vernier Caliper , Micrometer,Height gauge etc.
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Q1. Basic of Transmission Tower Design.
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Q1. Salary negotiation
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Q1. What are your salary expectations?
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Q2. What is your family background?
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Q3. Share details of your previous job.
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Q4. Why should we hire you?
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Q5. Why are you looking for a change?
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Q6. Where do you see yourself in 5 years?
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Q7. What are your strengths and weaknesses?
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Q8. Tell me about yourself.
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Q1. Tell me about PSV sizing
Ans. 
PSV sizing is the process of determining the required size of pressure safety valves to protect equipment from overpressure.
• PSV sizing involves calculating the relieving capacity required to protect equipment from overpressure events.

• Factors such as maximum allowable working pressure, design pressure, and relieving pressure are considered in PSV sizing.

• Codes and standards such as API 520 and API 521 provide guidelines ...read more
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Q2. What includes in P&ID
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P&ID includes symbols and diagrams that represent the process flow, equipment, piping, instrumentation, and control systems in a plant.
• Symbols representing equipment such as pumps, valves, tanks, and vessels

• Lines representing piping connecting the equipment

• Instrumentation symbols for sensors, transmitters, and control loops

• Control system symbols for controllers, PLCs, and HMI panels

• Annotations for labeling and identify
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Q3. How to you calculate suction pressure and discharge pressure and NPSH in pump ?
Ans. 
Suction pressure, discharge pressure, and NPSH in pumps are calculated using specific formulas and measurements.
• Suction pressure is calculated by measuring the pressure at the pump inlet.

• Discharge pressure is calculated by measuring the pressure at the pump outlet.

• NPSH (Net Positive Suction Head) is calculated by subtracting the vapor pressure of the fluid from the total suction head.

• Formulas: NPSH = (P_atm - P_vap) / ...read more
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Q4. How do you select a pump ?
Ans. 
Pumps are selected based on the required flow rate, head, type of fluid, operating conditions, and budget.
• Consider the required flow rate and head for the application

• Select a pump type suitable for the fluid being pumped (e.g. centrifugal pump for water)

• Take into account the operating conditions such as temperature and pressure

• Evaluate the budget constraints and choose a pump that meets the requirements within budget
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Q5. What will you do if you are getting two phase flow on control valve outlet
Ans. 
I would investigate the root cause of the two phase flow and take appropriate corrective actions.
• Check for any blockages or restrictions in the control valve

• Verify if the control valve is properly sized for the flow conditions

• Consider adjusting the pressure or temperature to prevent two phase flow

• Consult with other engineers or experts for further analysis

• Implement changes to the control system if necessary
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Q6. Calculate CV for control valve ?
Ans. 
CV for a control valve can be calculated using the formula: CV = Q / (SG * sqrt(ΔP))
• CV is the flow coefficient of the valve

• Q is the flow rate in gallons per minute (GPM)

• SG is the specific gravity of the fluid

• ΔP is the pressure drop across the valve
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Q7. Explain mac ab theile Method for Column sizing
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Mac ab theile Method is used for column sizing in chemical engineering.
• Mac ab theile Method is an empirical method used to size distillation columns based on the number of theoretical stages required for separation.

• It involves calculating the minimum reflux ratio required for separation and then determining the number of theoretical stages based on the operating line and equilibrium curve.

• The method takes into account ...read more
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Q8. What is HETP ?
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HETP stands for Height Equivalent to a Theoretical Plate, a measure of the efficiency of a column in a chromatography process.
• HETP is used to quantify the efficiency of a chromatography column.

• It represents the height of packing material that would provide the same separation as one theoretical plate.

• Lower HETP values indicate better column efficiency.

• HETP is calculated using the formula HETP = L/N, where L is the colu...read more
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Q1. Sheet Metal Related & welding related
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Q2. Press shop & Weld shop
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