Switch Reluctance Motor ( SRM ) Interview Question Answer - II

Short Question on Switch Reluctance Motor

Explain the term : Torque ripple
Torque ripple
  • It is defined as the difference between the maximum and minimum instantaneous torque during steady state condition. 
  • It is expressed as percentage of the average torque.


Safety Provisions For Electric Vehicle Charging Stations

Safety Provisions for Electrical Charging Stations 

Following safety provisions are applied to electric vehicle charging stations

Protection against overload of input supply and output supply fittings

  • Electric vehicle charging point shall be installed so that any socket outlet of supply is at least 800 millimeter above the finished ground level. 


Hydrogen Fuel Transportation

 Hydrogen Production – Centralized / Decentralized

  • Hydrogen is produced either in a centralized or decentralized manner, but transportation is key point. 
  • The cost of hydrogen generation is lower due to economies of scale but transmission and distribution costs are higher in the centralized production. 


Earthing Protection For E Vehicle Charging Stations


Earth Protection for E Vehicle Charging Station as per IS

According to Central Electrical Authority notification, 2019 earth protection system for the all the electrical vehicle charging stations

All residual current device of the protection of supplies for electric vehicle shall

India's Hydrogen Energy Roadmap : Vision - 2020

India’s Hydrogen Energy Roadmap

  • The nation hydrogen energy roadmap was laid in the year 2006 to provide blueprint for the long-term public and private efforts required for hydrogen energy development in the country. 
  • The roadmap identifies technology gaps and challenges for introduction of hydrogen in large scale in different phase manner. 
  • Major initiatives for hydrogen energy is for transportation and power generation


Hydrogen As Fuel | Future of Hydrogen

Hydrogen As Fuel 

  • As energy demand is rising day by day, hydrogen is promising energy carrier. 
  • It is non-polluting, efficient and clean fuel which could be used for most of the energy sectors like the conventional fuel or like electricity and provide energy to the nation. 

Fuel Cell : Hydrogen Production & Applications


Hydrogen production, storage, transportation and applications

  • The current global demand of hydrogen is 70 million metric ton per year in terms of energy it is around 330 million. 
  • Most of the hydrogen is produced from fossil fuels ( 76% form natural gas, 23% from coal and remaining from electrolysis of water ) which consumes 6% of global natural gas and 2% of global coal, result in CO2 emission of 830 Mt per year.