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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,
2003In 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 5020if 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 2679how 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 3512if 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,
1960In 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 14533what topics we have to concentrate for power grid et.written test.and tell what to read for english synonyms and antonyms.
1953Post New Electrical Engineering Questions
Explain about p.t?
Vaccum circuit breaker
-How do you select cable size for a given load at a given distance from source of supply. How do you find voltage drop.
What test must you do before powering up a circuit that you have been working on?
will 1050kva DG set withstand for back charge of 16MVA transformer
The 3 phase 400 hp 440 volt slip ring induction motor do not take one phase amps why ? The motor is running good condition
What do you understand by oldham's coupling ?
How is the gain affected by the introduction of feedback in a control system.
why do we put a transformer on soak before loading it
How to decide and select the different earthing wire size for the different types of earthing
This is urgent!! What is a Thyristor-based 3-ways selector switch with Zero crossing control? how does it operate and where is it mostly found in a system?
List few applications of d.c series motor?
What are the different methodes for calculating the short circuit Current?
why the NGR (neutral grounding resistor) always OFF during DG off?
What is different between resistance grounding system and resistance earthing system?
