Power System Objective Type Questions and answers

16.  In load flow studies of a power system, a voltage control bus is specified by

   A. Real power and reactive power

   B. Reactive power and voltage magnitude

   C. Voltage and voltage phase angle

   D. Real power and voltage magnitude

17.  In power system, the maximum number of buses are

   A. Generator buses

   B. Load buses

   C. Slack buses

   D. P-V buses

18.  In power system, if a voltage controlled bus is treated as a load bus then which one of the following limits would be violated ?

   A. Voltage

   B. Active power

   C. reactive power

   D. Phase angle

19. In a load flow analysis of a power system, the load connected at a bus is represented as

   A.. Constant current drawn from the bus

   B. Constant impedance connected at the bus

   C. Voltage and frequency dependent sources at the boss

   D. Constant real and reactive power drawn from the bus

20.  The voltage of a particular bus can be controlled by controlling the

   A. Active power of the bus

   B. Reactive power of the bus

   C. Phase angle

   D. All of the above

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