DGVCL Exam Paper (11-12-2011) Bulk power transmission over long HVDC lines are preferred on account of Minimum line power losses Simple protection No harmonic problems Low cost of HVDC terminals Minimum line power losses Simple protection No harmonic problems Low cost of HVDC terminals 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 Its full length 25 % of its full length 50 % of its full length 80 % of its full length Its full length 25 % of its full length 50 % of its full length ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) All the peripheral devices connected to a computer require power to work. Which of the following voltages is required for the motherboard to work? DC AC Negative cycle of sine wave Positive cycle of sine wave DC AC Negative cycle of sine wave Positive cycle of sine wave ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) The purpose of interpoles in DC machines is to nullify The reactance voltage Both the cross-magnetizing mmf and the reactance voltage The demagnetizing effect of armature mmf The cross-magnetizing effect of armature mmf The reactance voltage Both the cross-magnetizing mmf and the reactance voltage The demagnetizing effect of armature mmf The cross-magnetizing effect of armature mmf ANSWER EXPLANATION DOWNLOAD EXAMIANS APP interpoles is widely use to improve commutationplace between main poles fitted to yokefunctions:to neutralize armature mmf in commutating zoneto produce some flux in commutating zone
DGVCL Exam Paper (11-12-2011) An IDMT relay provides An inverse characteristic for low values of the fault current and a definite time characteristic for high values of the fault current A definite time cuttent characteristic A definite time characteristic for low values of the failt current and an inverse characteristic for high values of the fault current An inverse time current characteristic An inverse characteristic for low values of the fault current and a definite time characteristic for high values of the fault current A definite time cuttent characteristic A definite time characteristic for low values of the failt current and an inverse characteristic for high values of the fault current An inverse time current characteristic ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) Which type of back up protection is widely used for the protection of transmission lines? Remote backup Breaker backup Control backup Relay backup Remote backup Breaker backup Control backup Relay backup ANSWER DOWNLOAD EXAMIANS APP
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