DGVCL Exam Paper (11-12-2011) If the excitation of a synchronous generator fails, it acts as a Induction motor Synchronous generator Induction generator Synchronous motor Induction motor Synchronous generator Induction generator Synchronous motor ANSWER EXPLANATION DOWNLOAD EXAMIANS APP if excitation of synchronous generator fails, operate as induction motor
DGVCL Exam Paper (11-12-2011) Which lightning stroke is most dangerous? Direct stroke on ground wire Direct stoke on tower top Direct stroke on line conductor Indirect stroke on conductor Direct stroke on ground wire Direct stoke on tower top Direct stroke on line conductor Indirect stroke on conductor ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) Which motor is used to start heavy loads? Shunt motor Cumulatively compounded motor Differentially compounded motor Series motor Shunt motor Cumulatively compounded motor Differentially compounded motor Series 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) In a power plant, a reserve generating capacity which is not in service but is in operation is known as Spinning reserve Hot reserve Cold reserve Firm power Spinning reserve Hot reserve Cold reserve Firm power ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) If a relay fails to operate inspite of a fault in its own zone of protection, it is said to Over reach Under reach Pick up Reach Over reach Under reach Pick up Reach ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) If a 5 A fuse is blown frequently in a house lighting circuit, it is required to Reduce the load Insert a fuse of higher voltage rating Insert a fuse of higher current rating Check the load Reduce the load Insert a fuse of higher voltage rating Insert a fuse of higher current rating Check the load ANSWER DOWNLOAD EXAMIANS APP
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