57. Which of the following carrier frequency is used in a carrier current protection scheme?
58. The problem of stability occurs in
59. Which of the following condition causes transient iqrstability in power system?
60. Between the power house and consumer, there are usually a number of transformation and switching stations. These are called
61. The condition necessary for transient stability is
62. Modern trend in rail electrification in India is to use which of the following supply system
63. Tractive force Fa needed to accelerate a train of effective mass M for providing acceleration a is given by
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