Power Systems The per unit impedance of a circuit element is 0.30. If the base kV and base MVA are halved, then the new value of the per unit impedance of the circuit element will be 0.0030 0.30 0.0060 0.60 0.0030 0.30 0.0060 0.60 ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 100 Km long transmission line is loaded at 110 kV. If the loss of line is 5 MW and the load is 150 VA the resistance of the line is 6.06 Ω / phase. 2.26 Ω / phase. 8.06 Ω / phase. 4.65 Ω / phase. 6.06 Ω / phase. 2.26 Ω / phase. 8.06 Ω / phase. 4.65 Ω / phase. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A 200 MVA alternator operated at no load at frequency of 50 Hz, it has inertia constant of 5 MWsec/MVA and governing system has a time delay of 0.6 sec. If the load of 50 MW is suddenly applied then find the frequency deviation during this time? -0.76 Hz 0.76 Hz 0.85 Hz -0.85 Hz -0.76 Hz 0.76 Hz 0.85 Hz -0.85 Hz ANSWER DOWNLOAD EXAMIANS APP
Power Systems Power transmission lines are transposed to reduce ferranti effect skin effect radio interference proximity effect ferranti effect skin effect radio interference proximity effect ANSWER DOWNLOAD EXAMIANS APP
Power Systems An ACSR conductor has a diameter of 2 cm has internal inductance of 0.05 mH/Km. If this ACSR is replaced with another having a diameter of 4 cm then its internal inductance is 0.1 mH/Km 0.05 mH/Km 0 mH/Km 0.025 mH/Km 0.1 mH/Km 0.05 mH/Km 0 mH/Km 0.025 mH/Km ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following rotor is used in thermal power plants? salient pole rotor cylindrical rotor either of these squirrel cage rotor salient pole rotor cylindrical rotor either of these squirrel cage rotor ANSWER DOWNLOAD EXAMIANS APP
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