GETCO Exam Paper (22-07-2015) Slip at maximum torque depends on stator resistance stator reactance load current rotor resistance and reactance stator resistance stator reactance load current rotor resistance and reactance ANSWER EXPLANATION DOWNLOAD EXAMIANS APP at maximum torque:S=R₂/X₂
GETCO Exam Paper (22-07-2015) Differential equation is required to be solved in _____ Load flow studies Stability studies Finding efficiency of a transmission line economical operation of power systems Load flow studies Stability studies Finding efficiency of a transmission line economical operation of power systems ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The steady state stability of the power systems is most effected by transmission line reactance power factor of the load stability of generator voltage at generator bus transmission line reactance power factor of the load stability of generator voltage at generator bus ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) A transformer has negative voltage regulation when its load PF is lagging leading unity zero lagging leading unity zero ANSWER EXPLANATION DOWNLOAD EXAMIANS APP Voltage regulation = ((no load voltage)-(full load voltage)/(no load voltage))VR at leading PF = ((I*R*cosφ)-(I*X*sinφ))/VVR at lagging PF = ((I*R*cosφ)+(I*X*sinφ))/V
GETCO Exam Paper (22-07-2015) For a given transformer volte/turn for primary and secondary winding is depends on transformer design depends on load different same depends on transformer design depends on load different same ANSWER EXPLANATION DOWNLOAD EXAMIANS APP emf = 4.44*f*φ*Temf/T = 4.44*f*φ
GETCO Exam Paper (22-07-2015) The breaking capacity of a CB is usually expressed interms of volts amperes MVA MW volts amperes MVA MW ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS