Sample Exam

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EE1.1 – Electrical Power Systems Analysis:

In a 480-volt, 3-phase system having a main circuit breaker with an allowable interrupting rating of 25,000 amps, what is the available fault current?

EE1.2 – Electrical Power Systems Analysis:

A building with a 480-volt, 3-phase system has an available fault current of 16.37 MVA. The minimum allowable interrupting rating of the main circuit breaker is:

EE1.3 – Electrical Power Systems Analysis:

Power Factor Correction: Apparent power is measured in Volt-Amps, True power is measured in Watts,  and Reactive power is measured in Volt-Amps-Reactive (VAR’s). A 120-volt inductive motor has a resistance of 38.7 ohms and an inductive reactance of 29.2 ohms. What is the Apparent Power (S)?

EE1.4 – Electrical Power Systems Analysis:

The 120-volt inductive motor from EE1.3 has a resistance of 38.7 ohms and an inductive reactance of 29.2 ohms. What is the True Power (P)?
EE1.5 – Electrical Power Systems Analysis:

The 120-volt inductive motor from EE1.3 has a resistance of 38.7 ohms and an inductive reactance of 29.2 ohms. What is the Power Factor Correction?
EE2.1 – Short Circuit Analysis:

A short circuit is typically, an unintended connection between two nodes of an electric circuit that bypasses the load and establishes a path of low resistance through which excessive current flows. Short circuits can occur between two phases, between a phase and neutral, or between a phase and ground. Short circuits can result in: I. Fires, II. Explosions, III. Component Damage, IV. Overheating.
EE2.2 – Short Circuit Analysis:

A building’s electrical service utilizes a 150kVA, 480V, 3ᶲ transformer with an impedance (Z) of 1.2%. The closest over-current protection device is 125 ft. away. The conductors are 2 - #1/0 copper (“C” value = 8,925) in steel conduit. Determine the Line-to-Line Fault.

EE2.3 – Grounding Principles:

A building with a 2/0 service entrance conductor has a grounding system consisting of a #4 copper conductor soldered to an 8 foot long, 1¼” stainless steel ground rod. What part of this system is not code compliant?

EE2.4 – Grounding Principles:

A builder is planning on using a #2AWG bare copper conductor that completely encircles the building as a ground ring. How deep does the ground ring need to be buried?

EE2.5 – Grounding Principles:

Which of the following will correctly identify the terminal for connection of the grounding conductor?

EE3.1 – Grounding Principles:

In the diagram below, the dashed line represents the location of ground rods. What is the maximum number of ground rods that may be installed if the ground rods alternate (i.e. every other ground rod) between two grounding systems?


Grounding

EE3.2 – Electrical Construction Methods and Materials:

What type of conductor can be used in a wet application with a maximum operating temperature of 160°F and requiring a nylon jacket?

EE3.3 – Electrical Construction Methods and Materials:

In type THWN conductors, the “H” letter indicates the conductor is rated:

EE3.4 – Electrical Construction Methods and Materials:

What is the maximum number of quarter bends allowed in Electrical Metallic Tubing (Type EMT)?

EE3.5 – Overcurrent Protection Methods and Device Coordination:

The following continuous loads are being served by a single circuit: 12 amps, 3 amps, 8 amps, 4 amps. What size circuit breaker is required?


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Electrical Engineering Power PE Sample Exam

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Electrical Engineering Power PE Sample Exam

Electrical Engineering Power PE Sample Exam

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