Discrete Mathematics, Continuous Mathematics, and Probability
(A10100W1)
Electrical Engineering Questions and Answers
Question
Three impedances are connected in series across a 100V, 2kHz supply.
The impedances comprise:
• an inductance of 0.45mH and resistance 2Ω
• an inductance of 570μH and 5Ω resistance
• a capacitor of capacitance 10μH and resistance 3Ω
Assuming no mutual inductive effects between the two inductances.
(i) What is total impedance of the circuit.
(ii) What is the total current of the circuit.
(iii) Calculate the circuit phase angle.
(iv) Calculate the voltages across each impedance.
(v) Draw the phasor diagram.
ANSWER:
ω = 2πf
= 4000πK
Now, impedance (Z1) = R + jXL
(A10100W1)
Electrical Engineering Questions and Answers
Question
Three impedances are connected in series across a 100V, 2kHz supply.
The impedances comprise:
• an inductance of 0.45mH and resistance 2Ω
• an inductance of 570μH and 5Ω resistance
• a capacitor of capacitance 10μH and resistance 3Ω
Assuming no mutual inductive effects between the two inductances.
(i) What is total impedance of the circuit.
(ii) What is the total current of the circuit.
(iii) Calculate the circuit phase angle.
(iv) Calculate the voltages across each impedance.
(v) Draw the phasor diagram.
ANSWER:
ω = 2πf
= 4000πK
Now, impedance (Z1) = R + jXL
