Power Systems Find the surge impedance of a line when inductance is 160 mH and capacitance is 1µF? 400 Ω 160 Ω 200 Ω 800 Ω 400 Ω 160 Ω 200 Ω 800 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 3-phase transmission line has its conductors at the corners of an equilateral triangle with side 3m. The diameter of each conductor is 1.63 cm. The inductance of the line per phase per km is 1.182 mH 1.232 mH 1.093 mH 1.043 mH 1.182 mH 1.232 mH 1.093 mH 1.043 mH ANSWER DOWNLOAD EXAMIANS APP
Power Systems Find the characteristic impedance of a transmission line, if impedance is 16 Ω and admittance is 0.1 m℧? 400 Ω 160 Ω 320 Ω 200 Ω 400 Ω 160 Ω 320 Ω 200 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems An alternator having an induced emf of 1.6 pu is connected to an infinite bus of 1 pu. If the bus bar has reactance of 0.6 pu and alternator has reactance of 0.2 pu, what is the maximum power that can be transferred? 2 pu 5 pu 2.67 pu 6 pu 2 pu 5 pu 2.67 pu 6 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems A power system network has n nodes, Z33 of its bus impedance matrix is j0.5 pu. The voltage at node 3 is 1.3∠ -10°. If capacitor is having reactance of -j3.5 pu is now added to the network between node 3 and reference node, the current drawn by the capacitor in pu is 0.325∠ -100° 0.725∠ 80° 0.371∠ -100° 0.433∠ 80° 0.325∠ -100° 0.725∠ 80° 0.371∠ -100° 0.433∠ 80° ANSWER DOWNLOAD EXAMIANS APP
Power Systems A generator has reactances of sub transient (X")= 0.5 pu, transient (X') = 0.8 pu and synchronous reactance (X) = 5 pu. The voltages at these reactances are 1.2 V, 1.1 V and 1 V respectively. Find the corresponding sub transient fault current in pu? 0.2 pu 1.375 pu 2.4 pu 3.975 pu 0.2 pu 1.375 pu 2.4 pu 3.975 pu ANSWER DOWNLOAD EXAMIANS APP
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