GETCO Exam Paper (22-07-2015) In synchronous motor, V-curve is a graph of Armature current Vs active power Armature current Vs reactive power Armature current Vs power factor Armature current Vs Field current Armature current Vs active power Armature current Vs reactive power Armature current Vs power factor Armature current Vs Field current ANSWER EXPLANATION DOWNLOAD EXAMIANS APP v curve: armature current → field currentInverted V curve: power factor → field current
GETCO Exam Paper (22-07-2015) For given kVAR and line voltage the ratio of star to delta value of capacitor is 3 1 0.33333333333333 1.73 3 1 0.33333333333333 1.73 ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In a given current transformer, If permissible current ratio error rated primary current is 5% the CT is suitable for both measuring and protection as power transformer protection purpose measuring purpose both measuring and protection as power transformer protection purpose measuring purpose ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) The RMS value of the voltage u(t) = 3 + 4 cos(3t) is 4.12 5 3 + 2(1.41) 7 4.12 5 3 + 2(1.41) 7 ANSWER EXPLANATION DOWNLOAD EXAMIANS APP if voltage is given by,v(t) = V₀ + V₁ cos(3t) + V₂ cos(5t)+ …RMS value is given by,√( V₀² + (V₁/√2)² + (V₂/√2)² + …)
GETCO Exam Paper (22-07-2015) Switching surges are power frequency voltage short duration transient voltage high voltage Acs high votage DCs power frequency voltage short duration transient voltage high voltage Acs high votage DCs ANSWER DOWNLOAD EXAMIANS APP
GETCO Exam Paper (22-07-2015) In sub stations for making and breaking of load current isolators are used circuit breakers are used load interrupter switches are used relays are used isolators are used circuit breakers are used load interrupter switches are used relays are used ANSWER DOWNLOAD EXAMIANS APP
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