Sample Exam Problems
for the Power P.E. Exam

by Justin Kauwale, P.E.

Introduction

The webpage shows a sample of the exam problems provided in the Sample Exam that can be purchased from the Store Page.

The information shown on this website is a sample of the material provided in the technical study guide and sample exam. See the STORE to purchase these items.

Sample Exam Problem 1 - Devices and Power Electronic Circuits

Devices and Power Electronic Circuits accounts for 7 Problems on the PE Exam

The RMS voltage of the following AC circuit is 480V. The load is a purely resistive load with a value of 30 ohms. If diode B1 fails open (open circuit), then what is the RMS voltage seen by the load?



Sample Exam Problem 2 - Rotating Machines

Rotating Machines accounts for 10 Problems on the PE Exam

A synchronous motor has an internal motor voltage of 30 kV per phase and a terminal motor voltage of 24 KV per phase. The synchronous reactance is 20 ohms per phase and the armature current is 360 A. There is an unknown load served by the motor. The power factor of the motor is 1.0. If this load is removed, what is the torque angle?

Sample Exam Problem 1 - Distribution Systems

Sample Exam Problem 1 - Distribution Systems

The first part of Protection that you should understand is the main types of tripping devices. These devices isolate faults from damaging equipment and injuring personnel. Faults and the different types of faults were previously discussed in the Transmission section. Tripping devices are part of an overall protection scheme. This protection scheme consists of, (1) Measurement device, (2) relay devices and (3) tripping devices. First, the measurement device, which is typically a current or potential transformer, will measure a value that is not within normal operating range and is unsafe during a fault condition. This value will cause the relay device which will send a signal to the tripping device to trip and disengage the circuit to isolate the fault. Tripping devices and relay devices are discussed in this section, but the measurement devices are discussed in the Measurement & Instrumentation section.



Sample Exam Problem 1 - Distribution Systems

Sample Exam Problem 1 - Distribution Systems

The first part of Protection that you should understand is the main types of tripping devices. These devices isolate faults from damaging equipment and injuring personnel. Faults and the different types of faults were previously discussed in the Transmission section. Tripping devices are part of an overall protection scheme. This protection scheme consists of, (1) Measurement device, (2) relay devices and (3) tripping devices. First, the measurement device, which is typically a current or potential transformer, will measure a value that is not within normal operating range and is unsafe during a fault condition. This value will cause the relay device which will send a signal to the tripping device to trip and disengage the circuit to isolate the fault. Tripping devices and relay devices are discussed in this section, but the measurement devices are discussed in the Measurement & Instrumentation section.



Sample Exam Problem 1 - Distribution Systems

Sample Exam Problem 1 - Distribution Systems

The first part of Protection that you should understand is the main types of tripping devices. These devices isolate faults from damaging equipment and injuring personnel. Faults and the different types of faults were previously discussed in the Transmission section. Tripping devices are part of an overall protection scheme. This protection scheme consists of, (1) Measurement device, (2) relay devices and (3) tripping devices. First, the measurement device, which is typically a current or potential transformer, will measure a value that is not within normal operating range and is unsafe during a fault condition. This value will cause the relay device which will send a signal to the tripping device to trip and disengage the circuit to isolate the fault. Tripping devices and relay devices are discussed in this section, but the measurement devices are discussed in the Measurement & Instrumentation section.



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