Inteva Products Senior Engineer- Maintenance Interview Questions and Answers

Q1. What is star delta starter ?
Ans. 
Star delta starter is a type of reduced voltage starter used for starting high power motors.
• Consists of two contactors - one for star connection and one for delta connection

• Reduces starting current and torque to prevent damage to motor windings

• Commonly used for motors with high starting current requirements, such as induction motors
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Q2. How can hysteresis loss be calculated?
Ans. 
Hysteresis loss can be calculated using the area enclosed by the hysteresis loop on a B-H curve.
• Calculate the area enclosed by the hysteresis loop on a B-H curve

• Use the formula: Hysteresis Loss = ∮B.dH

• Consider the material's properties and operating conditions for accurate calculation
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Q3. What is skin effect?
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Skin effect is the tendency of alternating current to flow near the surface of a conductor, due to self-inductance.
• Skin effect is more prominent at higher frequencies.

• It causes the effective resistance of the conductor to increase.

• Skin effect can be reduced by using hollow conductors or by using stranded conductors.

• Example: Skin effect is a common phenomenon in high-frequency transmission lines.
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Q4. What is fluorocent effect?
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Fluorescent effect is the emission of light by a substance that has absorbed light or other electromagnetic radiation.
• Fluorescent effect occurs when a substance absorbs light at a specific wavelength and then re-emits light at a longer wavelength.

• Common examples include fluorescent light bulbs, glow-in-the-dark materials, and certain minerals that glow under UV light.

• Fluorescent materials can be used in various applica...read more
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Q5. Different between parallel circuit and series circuit?
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In a parallel circuit, components are connected in separate branches, allowing current to flow through multiple paths. In a series circuit, components are connected in a single path, where current flows through each component in sequence.
• Parallel circuit allows current to flow through multiple paths, while series circuit has only one path for current.

• In a parallel circuit, voltage across each component is the same, whi...read more
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Q1. Scania bus technician
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Q2. Scania bus engine is a very powerfully engine
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Q3. Scania bus is on the very confatable
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Q4. Scania bus is a very advance bus
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Q5. Scania bus on the way very goodsuspension
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Basic engineer level of aptitude test

Q1. RBL is fully hydraulic press machines,so the technical questions are raised related hydraulic troubleshooting
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Q1. It's about your personality
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Q1. Senior most person will lead interview
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Q1. What is star delta starter?
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Q2. How to use third party device in plc what is process?
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Q3. What is eddy current formula?
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Q4. What methods can be used to improve the power factor of a 130 kW load with a power factor of 0.7, and what rating of capacitor is required for this improvement?
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Q1. What questions were asked regarding your family background, specifically about your mother, brother, wife, and daughter?
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Q2. What are two reasons why we should hire you?
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Q1. Maintenance of panel boards and panel rewiring. To carryout preventive maintenance of transformer(11KV/433V-900KVA), motor(up to 160kw), HT-LT distribution panel , starter Fitting new part and making sure...read more
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Q1. What is eddy current What is 5s tpm What is electromagnetic induction What formula of rpm measurement How dc motor work How you daily shift handover takeover How deal with major breakdown How star delta ...read more
Ans. 
Questions related to maintenance engineering including eddy current, 5S TPM, electromagnetic induction, RPM measurement, DC motor, shift handover, major breakdown, and star delta starter.
• Eddy current is a current induced in a conductor due to a changing magnetic field

• 5S TPM is a methodology for workplace organization and standardization

• Electromagnetic induction is the production of an electromotive force across a condu...read more
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Q1. Family baground and eduction oral discussion
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