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.

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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

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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-

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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

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75. The incremental transmission loss of a plant is :
A. Positive always
B. Negative always
C. Can be positive or negative
D. Zero

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76. If Pm is the maximum power tansferred, the loss on the system is :
A.3P
B.4
C. None of the above
D.

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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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