NEW
Font size
WorksheetsQuiz on AC series and parallel circuit
Total questions: 21
Worksheet time: 11mins
In a purely resistive circuit, how are voltage and current related?
Voltage and current are in phase
Current leads voltage by 90°
Voltage leads current by 90°
Voltage lags current by 90°
In a pure inductive circuit, how does current behave in relation to voltage?
Current is in phase with voltage
Current lags voltage by 90°
Current leads voltage by 90°
Current is equal to voltage
In a purely capacitive circuit, how does current behave in relation to voltage?
Current lags voltage by 90°
Current leads voltage by 90°
Current is equal to voltage
Current is in phase with voltage
What is the formula for inductive reactance?
XL = R - jXC
XL = 2πfL
XL = 1 / (2πfC)
XL = R + jXL
What does the impedance (Z) in a series R-L circuit represent?
Z = R + jXL
Z = R - jXC
Z = R + jXC
Z = R + jR
In a series R-L circuit, what is the phase angle (θ) if the power factor is cos θ?
θ = -37.016°
θ = 90°
θ = 0°
θ = 180°
What is the voltage drop across the resistor (VR) in a series R-L circuit?
VR = I * XL
VR = I * Z
VR = I * XC
VR = I * R
In a series R-C circuit, how is the voltage across the capacitor (VC) represented?
VC leads VR by 90°
VC is equal to VR
VC lags VR by 90°
VC is in phase with VR
What is the formula for capacitive reactance?
XC = 1 / (2πfC)
XC = 2πfL
XC = R - jXL
XC = R + jXL
In a parallel R-L circuit, how is the total current (IT) calculated?
IT = IR / IL
IT = IR + IL
IT = IR - IL
IT = IR * IL
What is the relationship between the supply voltage and the total vector of voltages in a series circuit?
They are unrelated
They are equal
Supply voltage is greater than total voltage
Supply voltage is less than total voltage
In a parallel R-C circuit, how does the current through the capacitor (IC) behave?
IC is equal to VR
IC is in phase with VR
IC leads VR
IC lags VR
What is the impedance (Z) in a parallel R-C circuit?
Z = R - jXC
Z = R + jXC
Z = R // jXC
Z = R // -jXC
In a series R-L-C circuit, what happens to the voltage across the inductor (VL) compared to the capacitor (VC)?
VL is equal to VC
VL is always less than VC
VL can be greater or less than VC depending on the circuit
VL is always greater than VC
What is the power factor (PF) in a circuit?
PF = θ
PF = cos θ
PF = sin θ
PF = tan θ
In a parallel R-L circuit, what is the phase angle (θ) between the resistor current (IR) and the total current (IT)?
θ = 0°
θ = 90°
θ = -35.39°
θ = 180°
What is the formula for total impedance in a parallel R-L-C circuit?
Z = R - jXL + jXC
Z = R + jXL + jXC
Z = R // jXL // -jXC
Z = R + jXL - jXC
In a series R-L circuit, what is the inductive reactance (XL) if the frequency is 60 Hz and the inductance is 40 mH?
XL = 10 Ω
XL = 20 Ω
XL = 15.0796 Ω
XL = 5 Ω
In a series R-C circuit, what is the phase angle (θ) between the total current (IT) and the voltage across the capacitor (VC)?
θ = 0°
θ = 90°
θ = -90°
θ = 45°
What is the formula for total impedance in a series R-C circuit?
Z = R + jXL
Z = R // jXC
Z = R - jXC
Z = R + jXC
In a parallel R-C circuit, how is the total current (IT) calculated?
IT = IR / IC
IT = IR * IC
IT = IR - IC
IT = IR + IC
