GETCO Exam Paper (30-11-2008) Corona usually occurs when the electrostatic stress in the air around the conductor succeeds 30 kV (maximum value)/cm 11 kV (rms value)/cm 6.6 kV (rms value)/cm 22 kV (maximum value)/cm 30 kV (maximum value)/cm 11 kV (rms value)/cm 6.6 kV (rms value)/cm 22 kV (maximum value)/cm 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 6 4 3 2 6 4 3 2 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, star secondary Delta primary, delta secondary star primary, star secondary star primary, delta secondary Delta primary, star secondary Delta primary, delta secondary star primary, star secondary star primary, delta secondary ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) The arc voltage in a C.B. is _____ with the arc current in phase none of these lagging by 90˚ leading by 90˚ in phase none of these lagging by 90˚ leading by 90˚ ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) A CB under normal conditions, should be inspected once in 5 years 3 or 6 months a week a month 5 years 3 or 6 months a week a month ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (30-11-2008) The function of a breather in a transformer is to arrest flow of moisture into the tank to suppress harmonics to provide protection against over currents to control the level of oil in the tank to arrest flow of moisture into the tank to suppress harmonics 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.
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