Polycab Wires Senior Engineer Interview Questions and Answers

Q1. Position Tolerance, Tolerance stack, Temperature Rise test, Vaccuum Circuit breaker, arc quenching,
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Q1. About power electronics
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Q2. Switches in power electronics
Ans. 
Switches are essential components in power electronics that control the flow of electrical energy.
• Switches are used to turn on and off the flow of electrical energy in power electronics.

• They are used in various applications such as power supplies, motor drives, and inverters.

• Common types of switches include MOSFETs, IGBTs, and thyristors.

• Switches must be carefully selected based on the specific application requirements...read more
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Q3. Dc dc converter application
Ans. 
DC-DC converters are used to convert one DC voltage level to another, commonly used in power supplies and battery-powered devices.
• DC-DC converters are used to step up or step down voltage levels

• They are commonly used in power supplies for electronic devices

• They are also used in battery-powered devices to regulate voltage levels

• Examples include buck converters, boost converters, and buck-boost converters
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Q1. GD&T QUESTION? Technical question?
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Q2. GD&T- Geometric dimensioning & Tolerancing
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Q1. Transformers Installation
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Q1. Eelctrical Testing for equiomemt
Ans. 
Electrical testing for equipment involves verifying functionality and safety through various tests.
• Perform insulation resistance tests to check for any leakage currents

• Conduct continuity tests to ensure proper electrical connections

• Verify voltage and current ratings are within acceptable limits

• Test for proper grounding to prevent electrical hazards

• Use specialized equipment like multimeters and insulation testers

• Documen
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Technical, aptitude, English,Gk

Q1. Personal Interview
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Q2. Technical subject
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Q1. Previous project cost and scope
Ans. Previous project cost -467 cr and scope overhead line convert into underground project
Answered by Arvind Maurya
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Q1. Cable type and current carrying capacity and also methode of Laying
Ans. 
Different cable types have varying current carrying capacities and methods of laying, impacting overall electrical system performance.
• Different cable types such as PVC, XLPE, and rubber have different current carrying capacities.

• Current carrying capacity is influenced by factors like conductor size, insulation material, and ambient temperature.

• Methods of laying cables include direct burial, conduit installation, and ov...read more
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Q2. Xlpe cable are used in ug cable and cable capacity can be varry as per size of cable
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