Shyam Steel Industries Electrical Engineer Interview Questions and Answers

A thermocouple is a device that measures temperature by detecting the voltage difference between two different metals.

• Consists of two different metal wires joined at one end

• Produces a voltage that varies with temperature

• Used in temperature measurement and control systems

• Commonly used in industrial applications such as furnaces and boilers

The ohmic value of PT-100 is 100 ohms at 0°C.

• PT-100 is a type of platinum resistance thermometer.

• It has a resistance of 100 ohms at 0°C.

• The resistance increases with temperature at a rate of 0.385 ohms/°C.

• PT-100 is commonly used in industrial temperature measurement applications.

Calibration 3.0 and 5.0 refer to the accuracy level of a measuring instrument.

• Calibration 3.0 means the instrument has an accuracy level of 0.3% of the full scale reading.

• Calibration 5.0 means the instrument has an accuracy level of 0.5% of the full scale reading.

• The higher the calibration number, the more accurate the instrument is.

• Calibration is the process of adjusting an instrument to ensure its accuracy.

• Calibratio...read more

Improving power factor helps in reducing energy losses, increasing system efficiency, and reducing electricity costs.

• Improving power factor reduces the amount of reactive power flowing in the system, which in turn reduces energy losses.

• Higher power factor means more efficient use of electricity and less strain on the electrical system.

• Improving power factor can lead to reduced electricity costs for consumers and utilit...read more

Buccholz relay is a protective device used in oil-filled transformers to detect faults such as internal arcing or overheating.

• Buccholz relay is installed in the oil pipe connecting the transformer tank and conservator tank.

• It works based on the principle that gas is generated when a fault occurs in the transformer, causing oil level to drop and gas to accumulate in the relay.

• The relay consists of two float switches - o...read more

DP in Siemens communication stands for Distributed Peripherals.

• DP is a communication protocol used by Siemens for connecting distributed peripherals to a central control system.

• It allows for real-time data exchange between the peripherals and the control system.

• DP is commonly used in industrial automation applications.

• Examples of DP communication modules include DP/DP couplers and DP slaves.

To communicate S7 PLC and ABB drive using Profibus, you need to configure the Profibus network, set up the communication parameters, and establish the communication link.

• Configure the Profibus network by setting the correct baud rate, address, and other network parameters.

• Set up the communication parameters on both the S7 PLC and ABB drive to ensure they are compatible with each other.

• Establish the communication link b...read more

A step up transformer is a type of transformer that increases the voltage level from the input side to the output side.

• Consists of more turns on the secondary coil than the primary coil

• Used to increase voltage levels for long distance power transmission

• Commonly found in power distribution systems and electrical grids

A distribution transformer is a device used to step down high voltage electricity to a lower voltage suitable for use in homes and businesses.

• Converts high voltage electricity from power lines to lower voltage for distribution

• Commonly used in electrical distribution systems

• Helps reduce voltage for safe use in homes and businesses

• Can be mounted on poles or placed on the ground

• Examples: pole-mounted distribution transfor

An alternator is a device that converts mechanical energy into electrical energy in the form of alternating current.

• An alternator is commonly used in vehicles to charge the battery and power the electrical system.

• It consists of a rotor, stator, diode rectifier, and voltage regulator.

• Alternators produce alternating current (AC) which is then converted to direct current (DC) for use in the vehicle.

• They are more efficient...read more

A synonyms machine is a tool or software that helps find alternative words with similar meanings for a given word.

• A synonyms machine can be a thesaurus or a feature in word processing software.

• It helps writers and speakers find the right word to convey their message effectively.

• Examples include online thesauruses like Thesaurus.com or built-in thesaurus in Microsoft Word.

A hysteresis motor is a type of synchronous motor that operates based on the hysteresis effect in magnetic materials.

• Hysteresis motors have a rotor made of a magnetic material with high hysteresis, such as cobalt steel.

• They do not require a separate DC excitation like other synchronous motors.

• Hysteresis motors are known for their smooth operation and low noise levels.

• They are commonly used in applications where precise...read more