Figure 1 shows a circuit consisting of THREE (3) voltage sources and FIVE (5) resistors: Electrical Technology Assignment, UKM, Malaysia

• Determine the total current I_T for this circuit in polar form.
• Determine the phase angle of I_T lags the V_s.

QUESTION 3

Figure 3 shows a Y-connected source driving a Δ-connected load. The load is a balanced load ( Z_a=Z_b=Z_c= 15 + j20 Ω).

• Determine phase voltage V_θb and V_θc in polar form.
• Determine each line voltage (V_L1, V_L2, and V_L3) in polar form.
• Determine each load voltage (V_Za, V_Zb, and V_Zc) in polar form.
• Determine load current (I_Za, I_Zb, and I_Zc) in polar form.
• Determine the total magnitude of true load power (P_L(tot)).