71. The load flow solution is always assured in case of :

A. Newton-Raphson method

B. Gauss method

C. Gauss-Seidel method

D. None of these methods guarantees.

72. An alternators is delivering a load current; its per cent regulation is found to be zero. The type of load it delivers is :

A. Capacitive

B. Inductive

C. Resistive

D. None of above

73. The inertia constants of two groups of machines which do not swing together are Mi and M2. The equivalent inertia constant of the system is :

A. MI +M2

B. MI - M2 if M >M2M I M 2

C. M + M2

D. TM-71712-

74. The cost of generation is theoretically minimum if :

A. The system constraints are considered

B. The operational constraints are considered

C. and

D. The constraints are not considered

75. The incremental transmission loss of a plant is :

A. Positive always

B. Negative always

C. Can be positive or negative

D. Zero

76. If Pm is the maximum power tansferred, the loss on the system is :

A.3P

B.4

C. None of the above

D.

77. If X is the system reactance and R its resistance, the power transferred is maximum when :

A. X = R

B. X =

C. X =

D. X = 2R

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