Economics of Power Generation Which of the following devices may be used to provide protection against lightening over voltages ? Horn gaps Rod gaps Surge absorbers All of these Horn gaps Rod gaps Surge absorbers All of these ANSWER DOWNLOAD EXAMIANS APP
Economics of Power Generation The expected useful life of an hydroelectric power station is around 15 years 60 years 100 years 30 years 15 years 60 years 100 years 30 years ANSWER DOWNLOAD EXAMIANS APP
Economics of Power Generation The only motor that can be worked at leading power factor is 3-phase induction motor None of the listed here Synchronous motor 1- phase induction motor 3-phase induction motor None of the listed here Synchronous motor 1- phase induction motor ANSWER DOWNLOAD EXAMIANS APP
Economics of Power Generation In order to improve the power factor in case of 3 phase loads, the capacitors are connected in None of the listed here Delta Star or delta Star None of the listed here Delta Star or delta Star ANSWER DOWNLOAD EXAMIANS APP
Economics of Power Generation In a 3 phase system, the line losses are W at a p. f. Of 1 . If the power factor becomes 0.8 lagging, the losses will becomes 1.25 W 0.8 W 1.57 W 2 W 1.25 W 0.8 W 1.57 W 2 W ANSWER DOWNLOAD EXAMIANS APP
Economics of Power Generation For given active power and voltage, the current drawn is minimum when the value of power factor is 0.8 lag 0.75 lag Unity O. 8 lead 0.8 lag 0.75 lag Unity O. 8 lead ANSWER DOWNLOAD EXAMIANS APP
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