Q1. All Choose the correct answer: 1. One of the advantage of using a per unit system in power system calculations is: a) To increase the accuracy of the results b) no computation are required to refer an impedance from one side of a transfo c) The per unit impedances of machines of the same type and widely different rating usually lie within a wide range. 2. The load is modelled in fault calculation of a power system by: a) A constant impedance b) An EMF in series with an impedance c) A constant impedance for a static load and an EMF in series with an impedance for rotating machines 3. The most famous fault in a power system is a) Symmetrical three phase fault b) Single line to ground fault c) Line to line fault (1) (2)
Q1. All Choose the correct answer: 1. One of the advantage of using a per unit system in power system calculations is: a) To increase the accuracy of the results b) no computation are required to refer an impedance from one side of a transfo c) The per unit impedances of machines of the same type and widely different rating usually lie within a wide range. 2. The load is modelled in fault calculation of a power system by: a) A constant impedance b) An EMF in series with an impedance c) A constant impedance for a static load and an EMF in series with an impedance for rotating machines 3. The most famous fault in a power system is a) Symmetrical three phase fault b) Single line to ground fault c) Line to line fault (1) (2)
Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter7: Symmetrical Faults
Section: Chapter Questions
Problem 7.6P
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