Final Year Exam Maths

Question 1

Q1A) What are the steps?

Answer 1

1) Convert voltage to phasor
2) Determine impedance
3) Determine current (V/Z)
4) State power factor( Vtheta-Itheta)
5) Leading or lagging (Ztheta>0 lagging)
6) Determine P(W) and Q(VARS) from formula sheet and state S (S = P+jQ)

Question 2

Q1B)

Answer 2

1) Convert voltage to phasor
2) Determine impedances of reactive elements
3) Redraw circuit removing ZL
4) Determine Vth using voltage divider (source and