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

APPLICATION OF TURBULENT FLOW IN ENGINEERING, HOW TO GO ABOUT WRITING A TE...

HOW TO GO ABOUT WRITING A TERM PAPER TITLED: APPLICATION OF TURBULENT FLOW IN MECHANICAL ENGINEERING.

Analysis of trusses, State the assumptions in pin joined trusses?

State the assumptions in pin joined trusses?

Draw the p-h diagram for the vapour compression cycle, Draw the P-h and T-S...

Draw the P-h and T-S diagram for the vapour compression cycle when the vapour after compression is : (i) wet region (ii) dry saturated

Define yoke or magnetic frame - dc generator, Yoke or magnetic frame It...

Yoke or magnetic frame It is the outer cover of the machine. An even number of pole cores are bolted to the yoke. Its serves the following purposes 1. It gives mechanical su

Temporary stone scuppers - culverts, Temporary Stone Scuppers: In hil...

Temporary Stone Scuppers: In hill roads, it is customary to cut the roads from the hill-face and to open up the road immediately thereafter to traffic. Further improvements s

Kennedy Theorem, the movability of 3 bar mechanism is zero then how can we ...

the movability of 3 bar mechanism is zero then how can we comment on instantaneous centre of it?

Evaluate torque on each of the two shafts, An open belt drive connects two ...

An open belt drive connects two pulleys 1.2 m and 0.5 m diameter on parallel shafts 3.6 m apart. The belt has a mass of 1 kg/m length and the maximum tension in it is not to exce

Calculate the machine power factor, A 3-phase, 15-kV, 4-pole, cylindrical r...

A 3-phase, 15-kV, 4-pole, cylindrical rotor synchronous generator is connected to a 50-Hz infinite bus. The synchronous reactance of the machine is X s = 0.6 ohms per phase and th

Engine lubrication system , Engine Lubrication System: This system facilit...

Engine Lubrication System: This system facilitates the lubrication of all the engine components, gears and other associated parts.

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