DGVCL Exam Paper (11-12-2011) Which type of back up protection is widely used for the protection of transmission lines? Control backup Relay backup Remote backup Breaker backup Control backup Relay backup Remote backup Breaker backup ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) Which motor is used to start heavy loads? Series motor Shunt motor Cumulatively compounded motor Differentially compounded motor Series motor Shunt motor Cumulatively compounded motor Differentially compounded motor ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Torque in d.c motor = k* φ * IaIn series motor φ α IaTα I²starting torque of dc series motor is high
DGVCL Exam Paper (11-12-2011) The positive and negative sequence impedance of a transmission line are Equal Zero Infinite Different Equal Zero Infinite Different ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) The mutual inductance between two unity coupled coils of 9 H and 4 H is 6 H 13 H 36 H 2.2 H 6 H 13 H 36 H 2.2 H ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) In a power plant, a reserve generating capacity which is not in service but is in operation is known as Cold reserve Firm power Spinning reserve Hot reserve Cold reserve Firm power Spinning reserve Hot reserve ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) Transposition of transmission line is done to Reduce skin effect Reduce line loss Reduce corona Balance line voltage drop Reduce skin effect Reduce line loss Reduce corona Balance line voltage drop ANSWER DOWNLOAD EXAMIANS APP
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