GETCO Exam Paper (30-11-2008) Which loss in a transformer varies significantly with load? Hysteresis loss Copper loss Core loss Eddy current loss Hysteresis loss Copper loss Core loss Eddy current loss ANSWER EXPLANATION DOWNLOAD EXAMIANS APP During O.C test obtained no load losses (core loss)During S.C. test obtained copper loss (load losses)during loaded condition of transformer copper loss more significant than core loss.
GETCO Exam Paper (30-11-2008) An air blast C.B. is usually employed for _____ duty intermittent short repeated instantaneous intermittent short repeated instantaneous ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) Directional over current relays have two exciting coils connected across _____ secondary's of two _____ phases P.T., different T. & P.T., same T. & P.T., different T., different P.T., different T. & P.T., same T. & P.T., different T., different ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) In a dry type transformer, accumulation of dust on the windings and core is likely to cause corrosion of core material short circuiting of primary winding reduction in heat dissipation short circuiting of secondary winding corrosion of core material short circuiting of primary winding reduction in heat dissipation short circuiting of secondary winding ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) The power transmitted will be maximum when reactance is high receiving end voltage is more corona losses are least sending end voltage is more reactance is high receiving end voltage is more corona losses are least sending end voltage is more ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) The number of pilot wires required for protecting 3-phase transmission lines using Translay System of protection is 4 6 3 2 4 6 3 2 ANSWER DOWNLOAD EXAMIANS APP
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