The steady state stability of the power system can be increased by_____________?
A. connecting lines in parallel
B. connecting lines in series
E. using machines of high impedance
D. reducing the excitation of machines
E. none of the above
A. connecting lines in parallel
B. connecting lines in series
E. using machines of high impedance
D. reducing the excitation of machines
E. none of the above
A. low melting point and high specific resistance
B. low melting point and -low specific resistance
C. high melting point and low specific resistance
D. low melting point and any specific resistance
A. lengthening of the gap
B. cooling and blast effect
C. both (A) and (B)
D. deionizing the oil with forced air
E. none of the above
A. power
B. current
C. voltage wave
D. all of the above
A. power frequencies
B. higher frequencies entering generator or transformer units
C. either of the above
D. none of the above
A. maintain the arc
B. extinguish the arc
C. transmit large power
D. emit the ionizing electrons
A. delayed
B. instantaneous
C. both of the above
D. none of the above