Chopra Industries Engineer Interview Questions and Answers

A transformer is a static machine used for stepping up or stepping down voltage.

• Transformers are used to transfer electrical energy from one circuit to another through electromagnetic induction.

• They consist of two coils of wire, the primary and secondary, wrapped around a magnetic core.

• The primary coil is connected to the input voltage source, while the secondary coil is connected to the output load.

• Transformers can in...read more

CT or Current Transformer is an instrument used to measure high currents in power systems.

• CT is used to step down high currents to a level that can be measured by instruments.

• It is commonly used in power systems to measure the current flowing through transmission lines.

• CTs are also used for protection purposes, to detect faults and isolate faulty sections of the power system.

• They are available in different types and si...read more

PT stands for Potential Transformer, which is used to measure high voltage in power systems.

• PT is a type of instrument transformer that steps down high voltage to a lower voltage that can be safely measured by instruments.

• It is commonly used in power systems to measure voltage levels and protect equipment from overvoltage.

• PTs are also used in conjunction with current transformers (CTs) to measure power and calculate en...read more

SOV stands for Solenoid Operating Valve and is used to open and close valves in fluid power systems.

• SOV is a type of valve that operates when current flows through its coil.

• It is commonly used in fluid power systems to control the flow of fluids.

• SOV can be used to open and close valves in f.f.p.h line.

• The operation of SOV is based on Faraday's law of electromagnetic induction.

A circuit breaker is an electrical switch that automatically interrupts an electrical circuit to prevent damage or fire.

• It is designed to protect electrical circuits from damage caused by overload or short circuit.

• It works by detecting the excess current and interrupting the flow of electricity.

• It can be reset manually or automatically after tripping.

• It is commonly used in homes, buildings, and industrial settings.

• Exam...read more