Basic Electrical Engineering MCQ

Q:

The quadrature component is also known as?

A) Active component B) Reactive component
C) Either active or reactive component D) Neither active nor reactive component
 
Answer & Explanation Answer: B) Reactive component

Explanation: The quadrature component is also known as the reactive component because the reactive component forms a quadrature with the voltage.

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20
Q:

The phase difference between the active component of an impedance parallel circuit and the voltage in the network is __________

A) 0 B) 90
C) 180 D) 360
 
Answer & Explanation Answer: A) 0

Explanation: The active component in an impedance parallel network will always be in phase with the voltage in the circuit. Hence the phase difference is 0.

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25
Q:

The active component in an impedance parallel circuit will __________ the voltage.

A) Leads B) Lags
C) Be in phase with D) Either leads or lags
 
Answer & Explanation Answer: C) Be in phase with

Explanation: The active component in an impedance parallel network will always be in phase with the voltage in the circuit.

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24
Q:

The reactive component in an impedance parallel circuit leads the voltage when the current _________ the voltage.

A) Leads B) Lags
C) Either leads or lags D) Cannot be determined
 
Answer & Explanation Answer: A) Leads

Explanation: The reactive component in an impedance parallel circuit leads the voltage when the current leads the voltage.

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22
Q:

In an impedance parallel network, the reactive component will either lead or lag the ________ by 90 degrees.

A) Voltage B) Current
C) Either voltage or current D) Cannot be determined
 
Answer & Explanation Answer: A) Voltage

Explanation: In an impedance parallel network the reactive component will either lead or lag the voltage by 90 degrees.

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26
Q:

In an impedance parallel network, the reactive component will either lead or lag the voltage by _________ degrees.

A) 0 B) 90
C) 45 D) 180
 
Answer & Explanation Answer: B) 90

Explanation: In an impedance parallel network the reactive component will either lead or lag the voltage by 90 degrees.

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35
Q:

In an impedance parallel network, the reactive component will ____________ the voltage by 90 degrees.

A) Lead B) Lag
C) Either lead or lag D) Depends on the circuit
 
Answer & Explanation Answer: C) Either lead or lag

Explanation: In an impedance parallel network the reactive component will either lead or lag the voltage by 90 degrees.

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26
Q:

In a parallel circuit, current in each impedance is_____________

A) equal B) different
C) zero D) infinite
 
Answer & Explanation Answer: B) different

Explanation: In parallel circuits, the current across the circuits vary whereas the voltage remains the same. So, current in each impedance is different.

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