Answer Posted / dipti ranjan singh
Residual current circuit breaker
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
why the neutral point in connnection oscillates?
How earthing of switchgear system to be done.
the winding of Generator and Motor is star or in delta ? and why
what are the maximum available current, voltage ratings and switching speeds of the power electronic devices thyristor, power mosfet, igbt, and mct?
How vfd saving power.
-What should be minimum value of insulation resistance and maximum value of earth resistance at any electrical instillation and what is method of testing the same.
where was current transformer protection units used and why??
What are the parts in a inverter?
why it is so called as xlpe(cross linked poly ethyline) cable?
How calculated single phase induction motor req. Capacitor?
following are the questions asked in interviews: 1) Considering the short circuit fault, which switchgear is preferable, SFU OR MCCB? Which operates faster? whicg one is popular in Indian Market and why? 2)Define SCPD. What is type2 coodination? 3)Why the contactor rating is higher for the fuseless selection than for fuse selection? whether the ratinf of SFU or MCCB remains the same in both the cases? 4)If the HP rating is known then can you calculate the ratings of L.V Switchgear(SFU/MCCB, contactor, OLR) without using the selection chart?
In cable sizing calculation (determining the max route length of cable) why we choose the shortest length between cable length of full load current Iflc & starting current Istart?
what is the difference between Power and Distribution transformers ?
how to avoid electrical shock how capacitor store charges wat are the speed control of induction motors state faradays law flemings left hand rule what is rotary converter wat is transmission and distribution what are the sources of energy abrevation of acb,vcb,sf6,igbt what is output equation of transformer which test copper iron and iron loss are calculated what is eddy current draw a single line diagram (10 marks) draw direct online starter(10 marks)
why co incidence factor considered in transformer sizing?