This set of Power Systems Multiple Choice Questions & Answers (MCQs) focuses on “Inductance of Composite Conductor Lines – 1”.
1. Consider the figure as shown below:-
The line capacitance will be given by __________________
View Answer
Explanation: For the given configuration,
2. Consider the figure as shown below:-
The phase capacitance will be given by ____________
View Answer
Explanation: For the given configuration,
3. The per unit value of any quantity is usually given by _____________
a) (The actual value in any units)/(The base base value in same in same units)
b) (The base base value in same in same units)/(The actual value in any units)
c) The actual value in any units* The actual value in any units
d) 1/(The base base value)
View Answer
Explanation: The per unit value is given as (The actual value in any units)/(The base base value in same in same units).
4. If Xa is the armature reactance of a synchronous machine and Xl is the leakage reactance of the same machine, then the synchronous reactance is ____________
a) Xa+Xl
b) ½(Xa)
c) 1/2(Xa+Xl)
d) None of the mentioned
View Answer
Explanation: Xs = Xa+Xl
5. A large bus system whose voltage and frequency remain constant independent of the power exchange between the synchronous machine and the bus is called ________________
a) infinite bus
b) load bus
c) generator bus
d) cannot be determined
View Answer
Explanation: It is infinite bus.
6. The power delivered by a synchronous generator to an infinite bus is given by ______
View Answer
Explanation:
7. In a three phase system the three-phase fault MVA is always higher than the LG fault MVA at a bus.
a) True
b) False
View Answer
Explanation: Yes, at the bus three phase system the three-phase fault MVA is always higher than the LG fault.
8. The charging current of a 400 kV is _____ that of 220 kV line of the same length.
a) more than
b) less than
c) equal to
d) none of the mentioned
View Answer
Explanation: Line charging current is proportional to voltage.
9. Voltage regulation in the power system is __________
a) rise in voltage at receiving end
b) dip in voltage at receiving end
c) rise in voltage at sending end
d) dip in voltage at sending end
View Answer
Explanation: VR is rise in voltage at receiving end for a transmission line.
10. Voltage regulation becomes negative for a ______load.
a) leading
b) lagging
c) zero power factor
d) unity power factor
View Answer
Explanation: VR will be negative for a leading load at a receiving end.
Sanfoundry Global Education & Learning Series – Power Systems.
To practice all areas of Power Systems, here is complete set of 1000+ Multiple Choice Questions and Answers.
