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WorksheetsEE8702_PSOC_Model_IV_Part B
Total questions: 15
Worksheet time: 8mins
The maximum demand of a consumer is 5 kW and his/her daily energy consumption is 24 units. His/her % load factor is
5
20
25
48
A generating station has a connected load of 40 MW and a
maximum demand of 20 MW. The demand factor is
0.7
0.6
0.5
0.4
If the load on an isolated generator is increased without
increasing the power input to the prime mover
The generator will slow down
The generator will speed up
The generator voltage will increase
The generator field
Two alternators A and B are operating in parallel. If excitation of A is increased.
reactive power of A is increased while that of B is decreased
reactive power of A is increased while that of B is remain unchanged
reactive power of A is decreased
both real and reactive power of A are increased
The units for speed regulation of governor are
Hz
Hz per MVA
Hz per MW
none of the choices
The maximum demand on a power station is 100 MW. If the annual load factor is 40 %. Calculate the total energy generated in a year
350×106 Units
350 kWhr
350×103 kWhr
350×106 MWhr
Decentralized control system is used for larger power system because
Centralized system is not possible
Centralized control is more inefficient than decentralized control
Modern LFC algorithm is difficult to implement in centralized manner
All of above
The equation of area control error(ACE) is
ACE = ΔPtie + b.Δf
ACE = ΔPtie - b.Δf
ACE = ΔPtie +1/ b.Δf
ACE = ΔPtie - 1/b.Δf
Incremental cost of two generators Ic1 = 0.2 P1+60, Ic2 = 0.3 P2+40 and the ratings of the generator are 150 and 250 MW. Find the load sharing of each generator for a load of 200 MW?
P1 = 120 MW, P2 = 80 MW
P1 = 80 MW, P2 = 120 MW
P1 = 100 MW, P2 = 100 MW
P1 = 60 MW, P2 = 140 MW
Which of the following methods is/are used for reactive or voltage compensation
Shunt capacitor
Series capacitor
Generation excitation control
All of the above
Line compensation improve power system operation by
Keeping voltage closer to nominal value
Reduces line current and losses
Enhance stability
All of above
Which of the following is/are the base load plants?
Thermal plants
Nuclear plant
Hydro plant
All of the above
If the loading of the line corresponds to the surge impedance the voltage at the receiving end is
Greater than sending end
Less than sending end
Equal to the sending end
None of the above is necessary.
If the penalty factor of a plant is unity, its incremental transmission loss is
1.0
– 1.0
Zero
None of the above
The loss coefficients for a two-bus system are
B11= 0.02, B22 = 0.05, B12= 0.01, B21 = 0.015
B11= 0.02, B22 = 0.04, B12= -0.01, B21 = 0.01
B11= 0.03, B22 = 0.005, B12= 0.001, B21 = -0.001
B11= 0.03, B22 = 0.05, B12= 0.001, B21 = -0.001
