DGVCL Exam Paper (11-12-2011) The circuit breaker generally used in railway traction is Bulk Oil CB Minimum Oil CB Vacuum CB Air break CB Bulk Oil CB Minimum Oil CB Vacuum CB Air break CB ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) Hysteresis in an instrument means The repeatability 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 reliability of the instrument The repeatability 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 reliability of the instrument ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) Fot fast load flow calculations, the best method is Gauss-Siedal Approximate method Newton-Raphson De-coupled method Gauss-Siedal Approximate method Newton-Raphson De-coupled method ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) The advantage of slipring induction motor over the squirrel cage induction motor is It can be started with the help of rotor resistances It's power factor is higher It has a higher efficiency It is suitable for higher speeds It can be started with the help of rotor resistances It's power factor is higher It has a higher efficiency It is suitable for higher speeds ANSWER EXPLANATION DOWNLOAD EXAMIANS APP slip ring motor have high starting torque compare to squirrel cage motor and have good speed controlalso have high over loading capacity, smooth acceleration under heavy loads.
DGVCL Exam Paper (11-12-2011) The best location of the power factor correction equipment to be installed in the transmission line is at Middle of the line Any place The sending end The receiving end Middle of the line Any place The sending end The receiving end ANSWER DOWNLOAD EXAMIANS APP
DGVCL Exam Paper (11-12-2011) In the protection of transformers, harmonic restraint is used to guard against Lightning Magnetizing inrush current Unbalanced protection Switching over voltages Lightning Magnetizing inrush current Unbalanced protection Switching over voltages ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Initial inrush of magnetizing currents have high component of even and odd harmonics.2nd - 63%3rd -26.8%4th- 5.1%5th- 4.1%6th- 3.77th-2.4
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