A 100 kVA , 400 v/250 kv testing transformer has 8% leakage
reactance and resistance on 100 KVA base . A cable has to be
tested at 500 kv using the above transformer as a resonant
transformer at 50 hz . if the charging current of the cable
at 500 kv is 0.4 A find the series inductance required .
Assume 2% resistance for the inductor to be used and the
connecting leads . Neglect dielectric loss of hte cable .
what will be the input voltage to the transformer ?
WHAT IS AIR GAP VALUE IN MM FOR A 11KV BUSHING OF 11KV/440V
DISTRIBUTION TRANSFORMER. AND AIR GAP VALUE OF 25 KV
BUSHING OF AT TRANSFORMER OF 25 KV TRACTION. WHAT IS THE
CALCULATION FOR THE AIR GAP PERMITTED FOR BUSHINGS AT
how can I calculate charging current of cable/overhead
conductor? what is roll of voltage in it ?
Why ELCB trip, when neutral touch with ground?
How line capacitance & line inductance varies with increase
in height tower.
How to detect voltage vector shifting in interconnection
what happen if drive input fail momentry at 48.5 HZ
5- What is the task (function) of the excitation and
isolation transformers in power plant?
6- What is the task (function) of LCI (A), LCI (B) and LCI
(COS) in power plant?
: LCI (A) and LCI(B) are load commutating inverter for
generator turbine starting.
, LCI (COS) is load commutating inverter change over
Why sometime AVR and sometime Booster coil is used in
Alternator? what is the diferance between AVR & Booster
coil due to which they are selected