Power Systems The function of moderator in a nuclear reactor is to reduce the speed of neutrons. absorb neutrons. reduce temperature. stop chain reaction. reduce the speed of neutrons. absorb neutrons. reduce temperature. stop chain reaction. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Lightning arresters are used to protect electrical equipment against over voltages due to indirect lightning stroke. power frequency of over voltages. direct strokes of lightning. over currents due to lightning stroke. over voltages due to indirect lightning stroke. power frequency of over voltages. direct strokes of lightning. over currents due to lightning stroke. ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has (2 + j4)Ω impedance, 100 MVA and base voltage is 10 KV. Find the per unit impedance value of transmission line? (4 + j8 ) pu (2 + j4 ) pu (1 + j2 ) pu (0.5 + j1 ) pu (4 + j8 ) pu (2 + j4 ) pu (1 + j2 ) pu (0.5 + j1 ) pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has a surge impedance of 400 Ω for a length of the line of 200 km. If the length of line is increased to 400 km, then its surge impedance is 0 Ω 200 Ω 800 Ω 400 Ω 0 Ω 200 Ω 800 Ω 400 Ω ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following statements are true? both 1 and 2 Bus impedance matrix is a full matrix Bus admittance matrix is a sparse matrix nether 1 nor 2 both 1 and 2 Bus impedance matrix is a full matrix Bus admittance matrix is a sparse matrix nether 1 nor 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems In a 4*4 Y bus matrix the number of non zero elements are 12. Find the sparsity of the system? 0.25 0.5 1 0.75 0.25 0.5 1 0.75 ANSWER DOWNLOAD EXAMIANS APP
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