Voltech Interview Questions and Answers

Q1. In power plant related
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Q2. Plc and dcs question
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Q3. What is NDM? Calibration process describe.
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Q4. Different between plc and dcs.
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First round is aptitude test.the test questions topics for numerical solutions, logical reasoning, psychometric etc.

Q1. What you have learn in GET ?
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Q2. What is your favourite subject?
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Q1. What is your salary package?
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Q2. What is meaning of the your name?
Ans. 
My name means 'peaceful ruler' in Latin.
• My name is derived from the Latin word 'Pax' which means peace.

• It also has roots in the Roman goddess of peace, Pax.

• The name signifies a peaceful and authoritative presence.
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Q1. How many c&I instrument in work? Describe.
Ans. 
The number of C&I instruments in work varies depending on the project requirements and scope.
• The number of C&I instruments can range from a few dozen to several hundred in a typical industrial project.

• These instruments include sensors, transmitters, controllers, recorders, and final control elements.

• Examples of C&I instruments include pressure transmitters, temperature sensors, flow meters, level switches, and control
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Q2. Different between Rtd & thermocoupler? And his type work.
Ans. 
RTD measures temperature using the resistance change of a metal, while thermocouples measure temperature using the voltage generated at the junction of two different metals.
• RTD stands for Resistance Temperature Detector, while thermocouple is a temperature sensor made of two different metals.

• RTDs are more accurate and stable compared to thermocouples.

• RTDs have a linear relationship between resistance and temperature, w...read more
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Q1. What is Transformer?
Ans. 
A transformer is a device that transfers electrical energy between two or more circuits through electromagnetic induction.
• Consists of two coils of wire, known as primary and secondary coils

• Works on the principle of electromagnetic induction

• Used to step up or step down voltage levels in electrical circuits

• Commonly used in power distribution systems
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Q2. What is transformer Protection
Ans. 
Transformer protection refers to the measures taken to prevent damage to transformers from faults or abnormal operating conditions.
• Transformer protection devices include overcurrent relays, differential relays, and Buchholz relays.

• Overcurrent relays protect against overloads and short circuits.

• Differential relays compare the current entering and leaving the transformer to detect internal faults.

• Buchholz relays detect g...read more
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