Power Systems The capacitance of an overhead transmission line increases with increase in height of conductors above ground neither 1 nor 2 increase in mutual geometrical mean distance both 1 and 2 increase in height of conductors above ground neither 1 nor 2 increase in mutual geometrical mean distance both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The corona loss on a particular system at 50 Hz is 1 kW/km per phase. What is the corona loss at 60 Hz in kW/km per phase? 1.25 1.13 1 0.89 1.25 1.13 1 0.89 ANSWER DOWNLOAD EXAMIANS APP
Power Systems The positive, negative and zero sequence per unit impedance of two generators connected in parallel are X1 = 0.12 pu, X2 = 0.096 pu and X0 = 0.036 pu. For LG fault at generator terminals (with 1 pu voltage) the positive sequence current will be 10.936 pu 7.936 pu 9.936 pu 8.936 pu 10.936 pu 7.936 pu 9.936 pu 8.936 pu ANSWER DOWNLOAD EXAMIANS APP
Power Systems Mechanical energy is supplied to a DC generator at the rate of 4200 J / S. The generator delivers 32.2 Amp at 120 V. How much energy is cost per minute of operation 25060 J. 20160 J. 20060 J. 23060 J. 25060 J. 20160 J. 20060 J. 23060 J. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Four identical alternators each are rated for 20 MVA, 11 KV having a subtransient reactance of 16% are working in parallel. The short circuit level at the busbar is 500 MVA 100 MVA 125 MVA 400 MVA 500 MVA 100 MVA 125 MVA 400 MVA ANSWER DOWNLOAD EXAMIANS APP
Power Systems Mho relay is used for protection of medium lines. short lines. none of these. long lines. medium lines. short lines. none of these. long lines. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS