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Question 1
A 3-phase, 480 V commercial distribution line serves an inductive motor load drawing a line current of 120 A. What is the total apparent power (S) delivered to the load?
Correct Answer:
99.8 kVA
Question 2
An industrial facility operates a 3-phase load consuming 400 kW of active real power (P) at a lagging power factor of 0.80. What is the reactive power (Q) in kVAR drawn by this facility?
Correct Answer:
300 kVAR
Question 3
A 60 Hz high-voltage overhead transmission line has a series inductance of 1.5 mH per mile per phase. What is the inductive reactance (X_L) per mile of this line?
Correct Answer:
0.565 Ω/mile
Question 4
In a balanced 3-phase Delta-connected distribution system, what is the relationship between the line voltage (V_L) and the phase winding voltage (V_P)?
Correct Answer:
Line voltage is equal to phase voltage
Question 5
In a balanced 3-phase Wye (Star) connected distribution circuit, how does the line current (I_L) compare to the phase winding current (I_P)?
Correct Answer:
Line current is equal to phase current
Question 1
Exam overview

About this Exam

Prepare with the AZ ROC A-17 Electrical and Transmission Lines Practice Questions - Arizona ROC A-17 Electrical and Transmission Lines (Commercial) Examination Exam practice quiz. This question bank includes 100 questions covering line, phase, transmission, distribution, and current. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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AZ ROC A-17 Electrical and Transmission Lines Practice Questions - Arizona ROC A-17 Electrical and Transmission Lines (Commercial) Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on line, phase, transmission, distribution, and current. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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