Power Systems A fuse wire of circular cross-section has a radius of 0.8 mm. The wire blows off at an current of 8 Amp. Calculate the radius of wire that will blow off at an current of 1 amp? 2 mm. 4 mm. 0.4 mm. 0.2 mm. 2 mm. 4 mm. 0.4 mm. 0.2 mm. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The neutral of 10 MVA, 11 kV alternator is earthed through a resistance of 5 ohms. The fault ready is set to operate at 0.75 A. The current transformers have a ratio of 1000/5. What is the percentage of the alternator winding is protected? 15% 11.8% 85% 88.2% 15% 11.8% 85% 88.2% ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements is/are true? In case of parallel transmission lines fault current reduces both 1 and 3 fault current increases stability increases fault current reduces both 1 and 3 fault current increases stability increases ANSWER DOWNLOAD EXAMIANS APP
Power Systems The angular moment of 10 MVA generator is 0.2. Find the new value of angular moment for 20 MVA base? 0.1 pu 0.2 pu 0.4 pu 0.25 pu 0.1 pu 0.2 pu 0.4 pu 0.25 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems An ACSR conductor has internal inductance 0.05 mH/Km for µr = 1. If this ACSR is replaced with another having µr = 2, then find the internal inductance? 0.1 mH/Km 0.025 mH/Km 0.05 mH/Km 0 mH/Km 0.1 mH/Km 0.025 mH/Km 0.05 mH/Km 0 mH/Km ANSWER DOWNLOAD EXAMIANS APP
Power Systems An hydro-graph indicates All of these the maximum and minimum run off during the period. the discharge at any time during the period under consideration. the average run off during the period. All of these the maximum and minimum run off during the period. the discharge at any time during the period under consideration. the average run off during the period. ANSWER DOWNLOAD EXAMIANS APP
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