![rafaelys6354](/avatars/14208.jpg)
rafaelys6354
22.08.2020 •
Engineering
Experiment No.1
THE WOUND ROTOR INDUCTION MOTOR
OBJECTIVE
To examine the construction of the three-phase wound-rotor induction motor.
EQUIPMENT REQUIRED
Power Supply
Wound rotor Induction Machine,
Electrodynamometer,
AC Ammeter and AC Voltmeter
Connection leads
PROCEDURE
CAUTION!
High voltages are present in this Experiment! Do not make
any connections with the power on! The power should be
turned off after completing each individual measurement!
1. Examine the construction of the Three-Phase Wound-Rotor Induction Motor, paying particular attention to the motor, slip rings, connection terminals and the wiring.
2. Viewing the motor from the rear of the module:
A. Identify the three rotor slip rings and brushes.
B. Can the brushes be moved?
C. Note that the three rotor windings are brought out to thekanivia a slot in the rotor shaft.
D. Identify the stator windings. Note that they consist of many turns of small diameter wire evenly spaced around the stator.
E. Identify the rotor windings. Note that they consist of many turns of slightly larger diameter wire evenly spaced around the rotor.
F. Note the spacing of the air gap between the rotor and the stator.
3. Viewing the front face of the module:
EEL 3003 ELECTRICAL MACHINES 2
A. The three separate stator windings are connected to terminalsandandandand.
B. What is the rated current of the stator windings?
C. What is the rated voltage of the stator windings?
D. The three rotor windings are (wye, delta) connected.
E. They are connected to terminals,and.
F. What is the rated voltage of the rotor windings?
G. What is the rated current of the rotor windings?
H. What is the rated speed and mechanical output power of the rotor?
1. Knowing that the voltage induced in the rotor winding is zero when it is turningat12o synchronous speed, what is the synchronous speed of your motor?
2. Knowing that the equation for synchronous speed is:
Ns= 120f/P
where: Ns- synchronous speed (r/min) f
= power line frequency (Hz)
P number of stator poles
determine the number of poles in your motor.
Solved
Show answers
More tips
- C Computers and Internet Thin Client: What It Is and Why You Need It?...
- F Food and Cooking The Most Delicious and Simple Fish in Batter Recipe...
- D Dating, Love, Relationships How Long Can Love Last?...
- A Auto and Moto Mastering One-Movement Parking: All You Need to Know...
- C Computers and Internet How to Properly Order Clothing from International Online Stores...
- H Health and Medicine Headache: A Comprehensive Guide to Treatment...
- F Family and Home How to Choose the Best Diapers for Your Baby?...
- A Auto and Moto Discovering the Leader: What is the Most Expensive Car in the World?...
- F Food and Cooking How to Quickly Put your Child to Sleep?...
- C Computers and Internet How to Create a Website for Free and Easy?...
Ответ:
Explanation:
111 even numbers greater than 300 can be formed with the digits 1,2,3,4,5 if repetition of digits in a number is not allowed.