Keeping in view the cost and overall effectiveness, the following circuit breaker is suited for capacitor bank switching air blast. oil. SF6. vacuum. TRUE ANSWER : ? YOUR ANSWER : ?
In a Gauss Seidel load flow method, the number of iterations may be reduced if the correction in voltage at each bus is multiplied by Acceleration factor Gauss constant Blocking factor Lagrange multiplier TRUE ANSWER : ? YOUR ANSWER : ?
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? 85% 88.2% 11.8% 15% TRUE ANSWER : ? YOUR ANSWER : ?
The insulator thickness on the conductor, in cables depends upon power factor reactive power current voltage TRUE ANSWER : ? YOUR ANSWER : ?
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 -0.85 Hz 0.76 Hz 0.85 Hz TRUE ANSWER : ? YOUR ANSWER : ?
In kaplan runner, the number of blades is generally of the order of 16 - 24. 3 - 6. 12 - 16. 1 - 2. TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following materials is/are used as moderators? graphite All of these beryllium heavy water TRUE ANSWER : ? YOUR ANSWER : ?
In a 4 bus,4×4 Y bus matrix the number of non zero elements are 12. Find the number of transmission lines? 8 2 4 5 TRUE ANSWER : ? YOUR ANSWER : ?
Under excited Synchronous phase modifier works as series capacitor shunt capacitor shunt reactor any of the above TRUE ANSWER : ? YOUR ANSWER : ?
For some given transmission line the expression for voltage regulation is given by (Vs - Vr)/Vr *100%. Hence, this may either be a medium line or short line None of these this expression is true for any line this must be a short line TRUE ANSWER : ? YOUR ANSWER : ?