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AC Generators & Motors Exam Questions with Answers, Exams of Electrical and Electronics Engineering

Trident Technical CollegeElectrical and Electronics Engineering

A set of questions and answers related to ac generators and motors, covering topics such as alternator components, types of ac motors, and aircraft electrical systems. It is a valuable resource for students studying electrical engineering or aviation maintenance.

Typology: Exams

2024/2025

Available from 01/15/2025

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AC Generators & Motors EXAM
QUESTIONS WITH ANSWERS
What are the 4 primary components of an alternator? - ....🔰
VERIFIED ANSWERS.... ✔✔Rotor, Stator, Rectifier, Brush
Assembly
This component delivers varying DC current and produces a
spinning magnetic field. - ....🔰VERIFIED ANSWERS.... ✔✔Rotor
This component cuts the rotating magnetic field produced by
rotor and produces output EMF. - ....🔰VERIFIED ANSWERS....
✔✔Stator
Where in an alternator is the magnetic field created? - ....🔰
VERIFIED ANSWERS.... ✔✔Rotor
How many phases are most commonly utilized in an aircraft
alternator? - ....🔰VERIFIED ANSWERS.... ✔✔3
What type of current is applied to the rotating windings in a DC
alternator? - ....🔰VERIFIED ANSWERS.... ✔✔DC
The ____ ______ and ______ connect the rotating windings to the
assembly. - ....🔰VERIFIED ANSWERS.... ✔✔Slip Rings, Brushes
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Download AC Generators & Motors Exam Questions with Answers and more Exams Electrical and Electronics Engineering in PDF only on Docsity!

AC Generators & Motors EXAM

QUESTIONS WITH ANSWERS

What are the 4 primary components of an alternator? - .... 🔰 VERIFIED ANSWERS.... ✔✔ Rotor, Stator, Rectifier, Brush Assembly This component delivers varying DC current and produces a spinning magnetic field. - .... 🔰 VERIFIED ANSWERS.... ✔✔ Rotor This component cuts the rotating magnetic field produced by rotor and produces output EMF. - .... 🔰 VERIFIED ANSWERS.... ✔✔ Stator Where in an alternator is the magnetic field created? - .... 🔰 VERIFIED ANSWERS.... ✔✔ Rotor How many phases are most commonly utilized in an aircraft alternator? - .... 🔰 VERIFIED ANSWERS.... ✔✔ 3 What type of current is applied to the rotating windings in a DC alternator? - .... 🔰 VERIFIED ANSWERS.... ✔✔ DC The ____ ______ and ______ connect the rotating windings to the assembly. - .... 🔰 VERIFIED ANSWERS.... ✔✔ Slip Rings, Brushes

__ diodes are used to rectify the output in a DC alternator. - .... 🔰 VERIFIED ANSWERS.... ✔✔ 6 Diodes in a DC alternator are connected in _________ connection.

  • .... 🔰 VERIFIED ANSWERS.... ✔✔ Polyphase This drives alternator at constant speed. - .... 🔰 VERIFIED ANSWERS.... ✔✔ CSD This maintains constant frequency. - .... 🔰 VERIFIED ANSWERS.... ✔✔ CSD This motor operates both on AC and on DC - .... 🔰 VERIFIED ANSWERS.... ✔✔ Universal Motor What are the three common types of AC motor? - .... 🔰 VERIFIED ANSWERS.... ✔✔ Universal, Induction, Synchronous This type of AC motor has no connection to the rotating assembly
  • .... 🔰 VERIFIED ANSWERS.... ✔✔ Induction ________ the connection to any 2 stator windings will change the ______ of _______ on a 3 phase induction motor - .... 🔰 VERIFIED ANSWERS.... ✔✔ Reversing, Direction, Rotation The two main parts of an AC motor are? - .... 🔰 VERIFIED ANSWERS.... ✔✔ Stator, Rotor

What component performs the following: Voltage Regulation, Generator Line Contactor Control, Overvoltage Protection, Overload and Undervoltage Protection, Reverse Current and differential voltage protection - .... 🔰 VERIFIED ANSWERS.... ✔✔ GCU In order to parallel AC sources the ________, _________ and ______ must be very closely matched. - .... 🔰 VERIFIED ANSWERS.... ✔✔ Voltage, Frequency, Phasing In a ______ ______ system there will only ever be 1 source powering a given bus. - .... 🔰 VERIFIED ANSWERS.... ✔✔ Split Bus In a Split Bus system, when a power source fails, switching takes place to allow a different source to power the affected bus, true or false? - .... 🔰 VERIFIED ANSWERS.... ✔✔ True In a ______ _______ system multiple power sources can power the busses simultaneously. - .... 🔰 VERIFIED ANSWERS.... ✔✔ Parallel Bus The Voltage, Frequency and Phasing MUST be the same in a _______ ______ system. - .... 🔰 VERIFIED ANSWERS.... ✔✔ Parallel Bus In this system there is no CSD, the generator is driven directly by the engine therefore the frequency varies with engine rpm. - .... 🔰 VERIFIED ANSWERS.... ✔✔ Frequency Wild

Suitable for loads such as lighting, ovens, heaters, TRUs etc. - .... 🔰 VERIFIED ANSWERS.... ✔✔ Frequency Wild Variable Frequency can also be known as _______ _____. - .... 🔰 VERIFIED ANSWERS.... ✔✔ Frequency Wild Manages load control by shedding busses with a lower priority if necessary. - .... 🔰 VERIFIED ANSWERS.... ✔✔ Bus Power Control Unit Converts DC voltage to AC voltage. - .... 🔰 VERIFIED ANSWERS.... ✔✔ Inverter The two types of inverter are ________ and ______. - .... 🔰 VERIFIED ANSWERS.... ✔✔ Rotary, Static A DC motor mechanically driving an AC generator, in one housing. Can be 1phase or 3 phase. - .... 🔰 VERIFIED ANSWERS.... ✔✔ Rotary Inverter A solid state unit with no moving parts. Electronically converts DC to AC. Can be 1 phase or 3 phase. Could be used as a source of emergency AC power if no other AC were available. - .... 🔰 VERIFIED ANSWERS.... ✔✔ Static Inverter The main source of DC power in an AC aircraft. - .... 🔰 VERIFIED ANSWERS.... ✔✔ Transformer Rectifier Unit