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Which among these is the major advantage of per unit computations?

A. Per unit impedance of transformers is the same referred to either side of it.

B. For simulating steady state and transient models in the computer this method is very useful.

C. Manufactures usually specify the impedance of an apparatus in per unit system.

D. All of these

Related Questions on Power System Analysis, Stability & Computer Technique Test Questions

What is the per unit system (PU)?

A. A ratio of actual value in any units to the base or reference value in the same units

B. A ratio of the base or reference value in any units to the actual value in the same units.

C. Ratio of the square of the actual value in any units to the square of base or the reference value in the same units

D. All of these

What is infinite bus in power system?

A. A large system with infinite voltage

B. A large system in which the voltage and frequency varies

C. A large system whose voltage and frequency remains constant throughout.

D. Both (a) and (b)

E. None of these