DGVCL Exam Paper (11-12-2011) In which of the following motors, the stator and rotor magnetic fields rotate at the same speed? Universal motor Reluctance motor Induction motor Synchronous motor Universal motor Reluctance motor Induction motor Synchronous 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.
DGVCL Exam Paper (11-12-2011) Transposition of transmission line is done to Reduce skin effect Reduce corona Balance line voltage drop Reduce line loss Reduce skin effect Reduce corona Balance line voltage drop Reduce line loss 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) The circuit breaker generally used in railway traction is Minimum Oil CB Bulk Oil CB Vacuum CB Air break CB Minimum Oil CB Bulk Oil CB Vacuum CB Air break CB ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) In a series RLC circuit at resonance Current is minimum and power factor is unity Current is maximum and power factor is unity Current is minimum and power factor is 0.5 Current is maximum and power factor is 0.5 Current is minimum and power factor is unity Current is maximum and power factor is unity Current is minimum and power factor is 0.5 Current is maximum and power factor is 0.5 ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) Hysteresis in an instrument means 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 The repeatability of the instrument ANSWER DOWNLOAD EXAMIANS APP
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