GETCO Exam Paper (22-07-2015) Slip at maximum torque depends on load current stator reactance rotor resistance and reactance stator resistance load current stator reactance rotor resistance and reactance stator resistance ANSWER EXPLANATION DOWNLOAD EXAMIANS APP at maximum torque:S=R₂/X₂
GETCO Exam Paper (22-07-2015) Which of the following is a reason to decouple AVR and LFC loops when there is a shortage of reactive power? Change in voltage magnitude marginally affects real power AVR loop response is slower than LFC loop angle of the voltage is not considered deference of error is the main reason Change in voltage magnitude marginally affects real power AVR loop response is slower than LFC loop angle of the voltage is not considered deference of error is the main reason ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) Merz-Price protection is employed for protection of transmission lines circuit breaker motor alternators transmission lines circuit breaker motor alternators ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The relay which is most sensitive to power swings (mal operation) is Reactance Relay Impedance Relay Over current Relay Mho Relay Reactance Relay Impedance Relay Over current Relay Mho Relay ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In synchronous motor, V-curve is a graph of Armature current Vs power factor Armature current Vs reactive power Armature current Vs Field current Armature current Vs active power Armature current Vs power factor Armature current Vs reactive power Armature current Vs Field current Armature current Vs active power ANSWER EXPLANATION DOWNLOAD EXAMIANS APP v curve: armature current → field currentInverted V curve: power factor → field current
GETCO Exam Paper (22-07-2015) In differential protection scheme, a stabilizing resistance connected to block harmonics increase the current limit reduce the effect of non identical CTs increase the relay sensitivity block harmonics increase the current limit reduce the effect of non identical CTs increase the relay sensitivity ANSWER DOWNLOAD EXAMIANS APP
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