Electrical Circuits and Impedance Analysis Quiz

Test your knowledge on electrical circuits and impedance analysis with questions on resistance, power, reactance, phase angles, resonance, and more.

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What is the unit of electrical resistance?

Ohm

Ampere

Volt

Watt

1 answered

What is the unit of reactance?

Ohm

Henry

Farad

Siemens

1 answered

What is the unit of capacitance?

Ohm

Henry

Farad

Siemens

1 answered

What is the unit of inductance?

Ohm

Henry

Farad

Siemens

1 answered

What is the formula for calculating electrical power?

P = V / I

P = VI

P = V^2 / R

P = I^2R

What is the impedance of a purely resistive circuit?

Purely real

Purely imaginary

Complex number with zero imaginary part

Zero

What does a capacitor do in an AC circuit?

Decreases voltage

Increases current

Stores and releases energy

Decreases resistance

1 answered

What is reactance in an AC circuit?

Resistance to the flow of current

Opposition to the change in current

Ability to store energy

Ability to dissipate energy

1 answered

Which component in an AC circuit leads the voltage?

Resistor

Inductor

Capacitor

Depends on the frequency

1 answered

#10

What is the phase difference between voltage and current in a purely resistive circuit?

90 degrees

45 degrees

0 degrees

180 degrees

1 answered

#11

What happens to the impedance of a capacitor as the frequency of the AC source increases?

Impedance increases

Impedance decreases

Impedance remains constant

Impedance becomes zero

1 answered

#12

In an RL circuit, what happens to the phase angle if the frequency of the AC source decreases?

The phase angle increases

The phase angle decreases

The phase angle remains unchanged

The phase angle becomes zero

1 answered

#13

What is the power factor of an ideal inductor?

Depends on the frequency

Undefined

#14

What is resonance in an RLC circuit?

When the impedance is maximum

When the impedance is minimum

When the phase angle is maximum

When the circuit consumes the most power

1 answered

#15

In a series RLC circuit, when does the circuit resonate?

When XL = XC

When XL > XC

When XL < XC

Depends on the frequency

#16

What is the formula for calculating impedance in an RL circuit?

Z = R + jXL

Z = R - jXL

Z = R / XL

Z = R * XL

1 answered

#17

What is the formula for calculating total impedance in a series RL circuit?

Z = √(R^2 + (XL)^2)

Z = R + XL

Z = R / XL

Z = R * XL

1 answered

#18

What is the power factor of a purely capacitive circuit?

-1

Undefined

1 answered

Electrical Circuits and Impedance Analysis Quiz

What is the unit of electrical resistance?

What is the unit of reactance?

What is the unit of capacitance?

What is the unit of inductance?

What is the formula for calculating electrical power?

What is the impedance of a purely resistive circuit?

What does a capacitor do in an AC circuit?

What is reactance in an AC circuit?

Which component in an AC circuit leads the voltage?

What is the phase difference between voltage and current in a purely resistive circuit?

What happens to the impedance of a capacitor as the frequency of the AC source increases?

In an RL circuit, what happens to the phase angle if the frequency of the AC source decreases?

What is the power factor of an ideal inductor?

What is resonance in an RLC circuit?

In a series RLC circuit, when does the circuit resonate?

What is the formula for calculating impedance in an RL circuit?

What is the formula for calculating total impedance in a series RL circuit?

What is the power factor of a purely capacitive circuit?

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