FREE AND STUDY GAMES ABOUT ELECTRICAL SYSTEMS

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FREE AND STUDY GAMES ABOUT ELECTRICAL SYSTEMS

EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -70 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Which motor would be most likely to have an armature brake?

Answer:

Landing light retraction motor Question 2: When necessary during operation, CSD disconnect is usually accomplished by

Answer:

a switch in the cockpit

Question 3: To test generator or motor armature windings for opens,

Answer:

place armature in a growler and connect a 110V test light on adjacent segments; light should light Question 4: What type of instrument is used for measuring very high values of resistance?

Answer:

Megohmmeter

Question 5: Oil canning of the sides of aluminum or steel electrical junction boxes is considered to be

Answer:

a shorting hazard

Question 6: An aircraft electrical circuit control relay is

Answer:

an electronically operated switch Question 7: The most common method of regulating the voltage output of a compound DC generator is to vary the

Answer:

current flowing through the shunt field coils Question 8: What is the maximum amount of time a circuit can be in operation and still be an intermittent duty circuit?

Answer:

two minutes Question 9: The major advantages of alternating current (AC) over direct current (DC) is the fact that its current and voltage can easily be increased or decreased

Answer:

by means of a transformer Question 10: Electric wire terminals for most aircraft applications must be what type?

Answer:

ring

Question 11: Residual voltage is a result of magnetism in the

Answer:

field shoes

Question 12: The poles of a generator are laminated to

Answer:

reduce eddy current losses

Question 13: What is the most accurate type of frequency measuring instrument?

Answer:

Integrated circuit chip having a clock circuit Question 14: Electrical connectors used in the aircraft assemblies should meet which of the following specifications?

Answer:

Military Specifications (MS) Question 15: To what depth is the mica insulation between the commutator bars of a DC generator undercut?

Answer:

Equal to the width of the mica

Question 16: Which type of DC generator is not used as an airplane generator?

Answer:

Series wound Question 17: The voltage output of an alternator may be regulated by controlling the

Answer:

voltage output of the dc exciter Question 18: If a generator is equipped with a vibrator-type voltage regulator, the actual time the voltage regulator points remain open

Answer:

depends on the load carried by the generator Question 19: What should be used to protect wires from chafing when they must pass through bulkheads, firewalls, ribs, etc.?

Answer:

Suitable grommet Question 20: If the Integrated Drive Generator (IDG) scavenge oil filter is contaminated with metal, you should

Answer:

remove and replace the IDG

Question 21: The inductor-type inverter output voltage is controlled by the

Answer:

dc stator field current

Question 22: Which of the following are the major parts of a DC motor?

Answer:

Armature assembly, field assembly, brush assembly, and end frame

Question 23: A voltage regulator controls generator output by

Answer:

varying current flow to generator field coil

Question 24: One purpose of a growler test is to determine the presence of

Answer:

a shorted armature

Question 25: The pole pieces or shoes used in a DC generator are a part of the

Answer:

field assembly Question 26: Electric wiring installed in aircraft without special enclosing means (open wiring) offers the advantages of ease of installation, simple maintenance, and reduced weight. When bundling open wiring, the bundles should

Answer:

be limited as to the number of cables to minimize damage from a single electrical fault Question 27: Certain transport aircraft use AC electrical power for all normal operation and battery furnished DC electrical power for standby emergency use. In aircraft of this type that operate no DC generators, the batteries are kept charged by

Answer:

rectifiers which use the aircraft's AC generators as a source of power Question 28: Which of the following is most likely to cause thermal runaway in a nickel-cadmium battery?

Answer:

Excessive current draw from the battery