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WorksheetsQuiz-2_PS-II Subject _ ( Chapter 1 & 2 )_12 Sept.2020
Total questions: 20
Worksheet time: 21mins
Ci = αi + βiPi + γi Pi2 , In this equation, what do you mean by αi?
salary & wages, intrest & depriciation & is independent of generation.
Two core Fuel Cost.
Fuel Cost of generator i.
Measure of losses in the system
Ci = αi + βiPi + γi Pi2 , In this equation, what do you mean by Ci?
salary & wages, intrest & depriciation & is independent of generation.
Two core Fuel Cost.
Fuel Cost of generator i.
Measure of losses in the system
For a generator for any given electrical power output is defined as the limiting value of ratio of the increase in cost of fuel in Rs/hr to the corresponding increase in electrical power output in MW when the increase in power o/p tends to zero, is know as………………?
Output Power
Fuel Cost
Incremental Fuel Cost
Ratio of output Fuel Cost
What is the unit of Incremental Fuel Cost??
MWhr.
Rs MWhr.
Rs/MWhr
Rs/Hr
Which relation is true in case of Economic dispatch neglecting transmission loss?
dc1/dp1 = dp2/dc2
dp1/dc1 = dp2/dc2
dc2/dc1 = dp2 / dp2
dc1/dp1 = dc2 / dp2
Which relation is true in case of Economic dispatch considering transmission loss?
L1 dc1/dp1 = L2 dp2/dc2
L1 dc1/dp1 = L2 dc2 / dp2
L1 dc2/dc1 = dp2 / dp2
L2dp1/dc1 = L1dp2/dc2
what do you mean by following equation in case of Economic dispatch considering transmission loss?
∂Pi∂PLIncremental Fuel Cost
Incremental transmission Loss
Incremental loss
Incremental Fuel Loss
Complete the Equation PL =P12 B11 + 2 P1P2 B12 + ………?
P2 B22.
P22 B12.
P22 B11
P22B22
B11, B22 and B12 are called as ….?
Loss Coefficient.
Beta Coefficeint
Loss factor
both a & b.
The Fuel Cost of a two unit plant are given by,
C1 = 1.6 +15P1+0.1P12 Rs/hr.
C2 = 1.8 + 25 P2+ 0.1P22 Rs/hr.
If the total demand on the generators is 250 MW, Find the economic loading of two generators.
P1=200 & P2 = 150
P1 = 150 & P2 =200
P1 = 100 & P2= 200
P1 = 190 & P2=60
Advantages of gauss siedel method is/are ?
calculation time for each iteration is less
number of iterations are less
applicable for large power system network
all of the above
For load flow studies, What are the quantities specified at load bus are?
P and V
P and Q
V and δ
δ and Q
For n bus power system size of Y bus matrix is?
(n-1)×(n-1)
(n-2)×(n-2)
n×n
(n-1)×(n-2)
Which of the following matrix is used for load flow studies?
Z bus matrix
Y bus matrix
Unit matrix
null matrix
The value of off diagonal elements is in case of Ybus Matrix?
which is connected between bus i and bus j with negative sign
which is connected between bus i and bus j with positive sign
sum of admittances connected at bus i
sum of admittances connected at bus j
For accurate load flow calculations on large power systems, the best method is?
N-R method
G-S method
Decoupled method
all of the above
Which among the following quantities are to be determined in voltage controlled bus?
P and Q
Q and |V|
|V| and δ
Q and δ
Which among theses quantities are to be determined in slack bus?
P and Q
Q and |V|
|V| and δ
Q and δ
Which among the following buses constitute the maximum number in a power system??
Slack bus
P Q bus
P V bus
All of these
Why are load flow studies carried out?
To study of stability of the system
For fault calculations
For planning the power system
All of these
