Calculate the mechanical output power, Mechanical Engineering

Assignment Help:

A 415 V, 5 kW, 50 Hz, 4-pole, 3-phase wound-rotor induction motor has the following characteristics: 

  1. Stator winding resistance R1 = 2.1 Ω,
  2. Referred rotor winding resistance R'2 = 1.8 Ω,
  3. Stator leakage reactance X1 = 2.25 Ω.
  4. Referred rotor leakage reactance X'2 = 2.25 Ω.

The magnetising current, core losses and rotating losses can be neglected for this question.   

The motor is started direct on-line from a 415 V 50 Hz three phase supply. 

(a)  Calculate the starting current.

(b)  Calculate the starting torque.

(c)  Discuss how the starting current could be limited for this wound-rotor motor. 

(d)  If the motor is running at a speed of 1450 rpm, calculate the mechanical output power.


Related Discussions:- Calculate the mechanical output power

What is squeeze time, Q. What is Squeeze time? It is the time between t...

Q. What is Squeeze time? It is the time between the initial application of the electrode pressure on the work and the initial application of current to make the weld. During th

Introduction to advance manufacturing, INTRODUCTION In the morning se...

INTRODUCTION In the morning session there was a discussion about what the teachers are going to do in this week. Later the professor has shown power point presentation on int

Voltage -fundamentals of electricity , Voltage: The voltage is the potent...

Voltage: The voltage is the potential difference between two points. The current flows from higher potential to lower potential. Voltage is measured in volts (V). V = IR

Importance of angle of twist, Importance of angle of twist: Q: What i...

Importance of angle of twist: Q: What is the importance of angle of twist? From relation T / J = G. θ / L ;  we have               θ= T . L / G . J As G , L , J

Find the maximum shear stress at free end, Find the maximum shear stress at...

Find the maximum shear stress at free end: A stepped shaft ABCD, with A is fixed end and D is free end. AB = 1 m, BC = 2 m, CD = 1 m. AB is a hollow shaft of 100 mm outer diam

Management of financial requirements , Management of Financial Requirements...

Management of Financial Requirements:  To start an own workshop or any business you need monetary support. You need to ensure availability of the required money including working

Surface preparation and coating, Q. Surface Preparation and Coating? Ve...

Q. Surface Preparation and Coating? Vendor shall chemically clean all foreign material and commercially sandblast (SSPC-SP-10) mill scale and rust from all surfaces to be paint

Module assembly site preparation, Q. Module Assembly Site Preparation? ...

Q. Module Assembly Site Preparation? To set a module on the piles installed on project site, the following preparations shall be made: The Designer shall provide design elev

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd