Power Systems What will be the thermal efficiency of a 240 V, 1000 W electric kettle if it brings 2 liters of water at 15° C to boiling point 15 Minutes 79.33 %. 74.56 %. 80.25 %. 78.96 %. 79.33 %. 74.56 %. 80.25 %. 78.96 %. ANSWER DOWNLOAD EXAMIANS APP
Power Systems IF the time of operation of a relay for unity TMS is 10 sec then the time of operation for 0.5 TMS is 10 sec. 5 sec. 20 sec. none of these. 10 sec. 5 sec. 20 sec. none of these. ANSWER DOWNLOAD EXAMIANS APP
Power Systems The Gauss Seidel load flow method has following disadvantages. Which of the following statement is wrong? Unreliable convergence Choice of slack bus affects the convergence A good initial guess for voltages is essential for convergence Slow convergence Unreliable convergence Choice of slack bus affects the convergence A good initial guess for voltages is essential for convergence Slow convergence ANSWER DOWNLOAD EXAMIANS APP
Power Systems For some given transmission line the expression for voltage regulation is given by (Vs - Vr)/Vr *100%. Hence, None of these this must be a short line this may either be a medium line or short line this expression is true for any line None of these this must be a short line this may either be a medium line or short line this expression is true for any line ANSWER DOWNLOAD EXAMIANS APP
Power Systems Which of the following transformer is used in sub station for operating a protective relay? auto transformer capacitor voltage transformer distribution transformer All of these auto transformer capacitor voltage transformer distribution transformer All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems Steady state stability of a power system is improved by single pole switching decreasing generator inertia using double circuit line instead of single circuit line All of these single pole switching decreasing generator inertia using double circuit line instead of single circuit line All of these ANSWER DOWNLOAD EXAMIANS APP
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