Chapter 11, Problem 11.2P

If the load draws a current of 2727 A, in phase, from a generator, which of the following statement is true? O A. The reactive power is flowing from generator to the load and the real power is flowing from the load to the generator. O B. Since the current is in phase with the generator voltage, both the real and reactive power is flowing from the generator to the load. O .Since the current is leading the generator, both the real and reactive power is flowing from the load to the generator. O D. The real power is flowing from generator to the load and the reactive power is flowing from the load to the generator. O E. None of the other choices are correct

A synchronous generator is rated 645 MVA, 24 kV, 0.9 pf lagging. It has a synchronous reactance 1.2 . The generator is feeding full load at 0.9 pf lagging at rated voltage. Calculate: (a) Excitation emf (E,) and power angle 8 (b) Reactive power drawn by the load Carry out calculations in pu form and convert the result to actual values.

Q₁/ Two identical S.G 600 Kv A, 48V; Connected in parallel to supply load when the field Current at the both generators are equal, and the prime mover at The generators have defferent speed droop Charactara stics. The one generator delivered 100 A and 0.9 lagging P.f. The other delivers 300d at 0.7 lag P.F. @ what is the real and reactive power of The load. how can we adjust the excitation to make both power fackops are equal.

A generating station is to supply four regions of load whose peak loads are10 MW, 5 MW, 8 MW and 7 MW. The diversity factor at the station is 1-5 and the average annual load factor is 60%. Then the installed capacity is (25 to26)MW. O (24 to25)MW. O (23 to24)MW. O

There are only two generators in a power system, and these generators supply a total load of 10 MW. The no-load frequencies and droop constants for the generators are 51 Hz, 0.5Hz/MW, and 52 Hz, 1Hz/MW, respectively. What is the frequency of the combined system? What are the powers produced by individual generators? At this loading condi- tion, if the generator 1 is delivered to producc equal amount of power as the generator 2, what should be the no-load frequency of the generator 1?

A generating station has a connected load of (45MW) and a maximum demand is (15MW). with average demand of (6300KW), the value of demand * factor and load factor are 0.55, 1.5 0.33 ,0.42 O 3,0.14 O

Can ripple factors be grater then unity . Justify?

Qa1. The three phases of a generator can be connected in either delia (D) or wye (Y) connection. List two advantages of three phase system over a single phase system. Also write mathematical relationship between the phase voltage and the ine voltage, and the phase current and the line current for both delia (D) and wye (Y) connections.   Please answer in typing format please..

two synchronous generators are connected in parallel, feeding a load together. the frequency of the first generator in the no-load State is 52 Hz and the slope of the characteristic is 1 MW/Hz. the total power of the load fed by these two generators is 2.5 MW and the power coefficient is 0.6 inductive. by drawing the characteristic curve of the system;a) what is the frequency of the system when the load in question is fed, and how do the two generators share the load between themselvesb) if a load of 0.5 MW is added to the system, find the operating frequency of the new system and the powers given by each generatorc) if a second load of 0.5 MW is connected to the system, the idle operating frequency of the second generator is increased by 0.5 Hz, what happens to the operating frequency of the system and the power values given by the generators