GETCO Exam Paper (30-11-2008) The number of pilot wires required for protecting 3-phase transmission lines using Translay System of protection is 6 2 3 4 6 2 3 4 ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) Which of the following connection of transformer will give the highest secondary voltage? Delta primary, delta secondary Delta primary, star secondary star primary, delta secondary star primary, star secondary Delta primary, delta secondary Delta primary, star secondary star primary, delta secondary star primary, star secondary 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 short circuiting of primary winding corrosion of core material short circuiting of secondary winding reduction in heat dissipation short circuiting of primary winding corrosion of core material short circuiting of secondary winding reduction in heat dissipation ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) When a star delta transformer bank of three single phase transformers is to be used for step down transformation with line voltages of 23000 V and 2300 V, the ratio of transformation will be 5.8:1 17.2:1 10.0:1 12.1:1 5.8:1 17.2:1 10.0:1 12.1:1 ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) The function of a breather in a transformer is to suppress harmonics to arrest flow of moisture into the tank to provide protection against over currents to control the level of oil in the tank to suppress harmonics to arrest flow of moisture into the tank to provide protection against over currents to control the level of oil in the tank ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Function of breather is to extract moisture from air going into the conservator.it is small container filled with silica gel.silica gel in breather will be blue colour when installedsilica gel turn into pink colour when absorb moisture.
GETCO Exam Paper (30-11-2008) Dynamic stability characteristics are predominant in the period between the time the governors start reacting and when the steady-state stability is reached both (b) & (c ) while governor is in action immediately following a loss of load between the time the governors start reacting and when the steady-state stability is reached both (b) & (c ) while governor is in action immediately following a loss of load ANSWER DOWNLOAD EXAMIANS APP
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