GETCO Exam Paper (22-07-2015) Slip at maximum torque depends on stator reactance load current stator resistance rotor resistance and reactance stator reactance load current stator resistance 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 economical operation of power systems Finding efficiency of a transmission line Stability studies Load flow studies economical operation of power systems Finding efficiency of a transmission line Stability studies ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) HVDC transmission is preferred to EHV AC because Its terminal equipment are inexpensive VAR compensation is not required in it Harmonic problem is avoided System stability can be improved Its terminal equipment are inexpensive VAR compensation is not required in it Harmonic problem is avoided System stability can be improved ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) For eliminating 7th harmonics from generated EMF in alternator the fractional pitch must be 7\8 2\3 5\6 6\7 7\8 2\3 5\6 6\7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP fractional pitch = Cos( α/2)α is obtain from: (nα/2)=90˚ where n is harmonicα=25.7143˚fractional pitch=6/7
GETCO Exam Paper (22-07-2015) Light from the nearest star (other than the sun) reaches the earth in 4.2 minutes 42 secs 4.2 years 4.2 hours 4.2 minutes 42 secs 4.2 years 4.2 hours ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The relay which is most sensitive to power swings (mal operation) is Reactance Relay Over current Relay Mho Relay Impedance Relay Reactance Relay Over current Relay Mho Relay Impedance Relay ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS