why 400Hz is used for aircraft systems ?
Answer Posted / ss
because using higher frequency makes the trnsfrmr size small.
Is This Answer Correct ? | 138 Yes | 9 No |
Post New Answer View All Answers
What happens if we connect a single phase energy meter in reverse polarity.
How to Design green buildings services? What is the advantage to design green building?
How can a equal potential zone be carried out in conductors?
WHY BREAKER ARE USED IN SUBSTATIONS?
How can we findout the maximum efficiancy of Transformer? At which load?
What is center gravity load in substation?
We are designer please help me calculate the size of 11kv cables from step up transformer to M.V panel, total load is 5 mega watt distance 900 feet (used aluminum type cables) please provided formula for calculate the cable with example.
what happen when increase or decrease size of lamp,light.glass.
can we use engine degreaser for electrical motors?
When MICC cables used ?
How do we calculate the Out put voltage of generator, after the excitation is being given?
What are the types of transformers according to the arrangement of iron cores?
where are the circulat the diesel in DG parts name with pictue
Can any answer me ,What will be the range of C.T coil for L&T energy meter EM301 used for 180 kva DG set
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?