Power Systems Load frequency control is achieved by properly matching the individual machines generator ratings. turbine inputs. reactive powers. generated voltages. generator ratings. turbine inputs. reactive powers. generated voltages. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The insulation of the modern EHV lines is designed based on corona. the lighting voltage. the switch voltage. R × I. corona. the lighting voltage. the switch voltage. R × I. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following matrix is used for load flow studies? Unit matrix null matrix Y bus matrix Z bus matrix Unit matrix null matrix Y bus matrix Z bus matrix ANSWER DOWNLOAD EXAMIANS APP
Power Systems The use of high speed circuit breakers improves system stability. increased the short circuit current. decrease system stability. reduces the short circuit current. improves system stability. increased the short circuit current. decrease system stability. reduces the short circuit current. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Frequencies must be same in which of the following line to exchange the power from one place to other place ? Synchronous line Asynchronous line No need of same frequency for exchange of power both 1 and 2 Synchronous line Asynchronous line No need of same frequency for exchange of power both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems Three generators rated 100 MVA, 11 kV have an impedance of 0.15 pu each. If in the same plant, these generators are being replaced by a single equivalent generator, the effective impedance of equivalent generator will be 0.15 pu 0.25 pu 0.05 pu 0.45 pu 0.15 pu 0.25 pu 0.05 pu 0.45 pu ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS