To which kind of system can the phasor technique be used Lin
     To which kind of system can the phasor technique be used?  Linear systems that are periodic in time.  Linear systems that are periodic in space.  Linear or nonlinear systems that are periodic in time.  Linear or nonlinear systems that are periodic in space. 
  
  Solution
The answer of the above question is ,phasar technique mostly used linear systems that are periodic in time

