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# 4 hi friends i m from electrical branch and seeking for tech. + apti. both papers of hpcl plz get it available as soon as possible my email id is sumit_lig189@yahoo.co.in
HPCL,
1969In all the generators, the excitation supply is DC. What is the significance of DC excitation? What will happen if AC supply is given as excitation supply?
2 4913if 2 coil of 1000W connect in series and 200 v is applied across it . then what is the total power of coil when coil have only resistive load .
BSNL,
1 2599how can we measure 220kv or more than these voltages ...?and also how can we conform whether we r getting 220kv from generating stations throuth the h v transmission lines?
1 3450if 2 coil of 1000W connect in series and 200 v is applied across it . then what is the total power of coil when coil have only resistive load .
BSNL,
1918In all the generators, the excitation supply is DC. What is the significance of DC excitation? What will happen if AC supply is given as excitation supply?
8 14318what topics we have to concentrate for power grid et.written test.and tell what to read for english synonyms and antonyms.
1905Post New Electrical Engineering Questions
why 15 kw motor winding resistance is low then 5 kw motor winding resistance?
What is the difference between PLC and Embeded system
How is the gain affected by the introduction of feedback in a control system.
I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?
What is the basic principal, by which DC voltage level is increased more than the supplied AC voltage during conversion. As upto AC level it is contorrled by firing anlge but after maximum level how is it possible.Please clear picture. OR we have to supply the higher level AC?
state types of reflectors in illumination engg. ???????
how to select the mpcbs and contactor for 3 phase 30 hp star delta motors.for plc control.and tell me the calaculation for future use.
why is the power generator connected as star earthed or star earthed through reactance and what its features ?
I have done my m.tech in electrical engg discipline. Can any one please suggest me how should I prepare for getting into phd in iit or nit.How should I prepare for getting into lecturership
How REF protects transformer alone? explain with diagram.
design a LV scheme for a 15 storied building?
What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works?
How many methods use the load flow solution?
being an electrical engineer why you wanna come into software i have an very good academics what answer i have to give
How do we calculate over and under frequency tolerance from generator data?
