DGVCL Exam Paper (11-12-2011) Bulk power transmission over long HVDC lines are preferred on account of Low cost of HVDC terminals Minimum line power losses No harmonic problems Simple protection Low cost of HVDC terminals Minimum line power losses No harmonic problems Simple protection ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) First zone distance relay protects the transmission line section upto 80 % of its full length 25 % of its full length Its full length 50 % of its full length 80 % of its full length 25 % of its full length Its full length 50 % of its full length ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) The bus bar zone faults are generally Three phase short ciruits Double line to ground faults Phase to phase faults Single line to ground faults Three phase short ciruits Double line to ground faults Phase to phase faults Single line to ground faults ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) The positive and negative sequence impedance of a transmission line are Equal Infinite Zero Different Equal Infinite Zero Different ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) Hysteresis in an instrument means The repeatability of the instrument The reliability of the instrument The inaccuracy due to change in temperature The change in the same reading when the input is first increased and then decreased The repeatability of the instrument The reliability of the instrument The inaccuracy due to change in temperature The change in the same reading when the input is first increased and then decreased ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) In carrier current protection, the purpose of the wave trap is for Trapping high frequency waves entering into generator/transformer unit. All of these Trapping power frequency waves Tripping fault current Trapping high frequency waves entering into generator/transformer unit. All of these Trapping power frequency waves Tripping fault current ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS