DGVCL Exam Paper (11-12-2011) Reactance relay is used to protect against Earth faults only Both phase and earth faults Over voltage faults Phase faults only Earth faults only Both phase and earth faults Over voltage faults Phase faults only 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 13 H 36 H 2.2 H 6 H 13 H 36 H 2.2 H 6 H ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) The bus bar zone faults are generally Single line to ground faults Phase to phase faults Double line to ground faults Three phase short ciruits Single line to ground faults Phase to phase faults Double line to ground faults Three phase short ciruits ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) The insulation coordination for UHV lines (above 500 kV) is done based on Switching surges Voltage level of the line Lightning surges Lightning and switching surges Switching surges Voltage level of the line Lightning surges Lightning and switching surges ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) What type of insulator is used if the direction of the transmission line is to be changed? Strain type Shakle type Pin type Suspebsion type Strain type Shakle type Pin type Suspebsion type ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) In which of the following motors, the stator and rotor magnetic fields rotate at the same speed? Reluctance motor Induction motor Synchronous motor Universal motor Reluctance motor Induction motor Synchronous motor Universal motor ANSWER EXPLANATION DOWNLOAD EXAMIANS APP In all machine stator and rotor magnetic field rotates (stationary with respect to each other) at synchronous speed with respect to stationary observer.
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