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

Working of torsion dynamometer, Can you explain the principal on which a to...

Can you explain the principal on which a torsion Dynamometer works ? Illustrate with details the evaluation involved in finding the power transmitted.

Shape functions , Derive the shape functions N1...N10 for a 10 node triangu...

Derive the shape functions N1...N10 for a 10 node triangular element in terms of area coordinates L 1 , L 2 , L 3 .  Nodes are equally spaced on the edges and node 10 is at the cen

Evaluate young modulus of elasticity - ultimate stress, Evaluate Young modu...

Evaluate Young modulus of elasticity - Ultimate stress: Q:   The following observations were made during tensile test on mild steel specimen 40 mm in diameter and 200 mm long

Determine the required feed rate of seawater, Seawater is boiled in a 5 lit...

Seawater is boiled in a 5 liter kettle to produce drinking water.  In class we solved the steady-state version of this problem.  Here you are asked to consider the transient period

Connecting rod-basic components of engine , Connecting Rod : It connects t...

Connecting Rod : It connects the piston and the crankshaft and transmits the power from the piston to the crankshaft. It has a small end (through which gudgeon pin passes to conne

Find out the reactions at hinge, Find out the reactions at hinge: A bo...

Find out the reactions at hinge: A board ABCD is held in position as shown in Figure by a cable BE and a hinge at A. If the weight of the board is 5 kN, find out the reactions

Calculate the magnitude of maximum bending moment, Calculate the magnitude ...

Calculate the magnitude of maximum bending moment: The shear force diagram for the overhanging beam is illustrated in Figure. Draw the loading diagram & bending moment diagram

Metallurgical defects-gas porosity, Gas Porosity Porosity is the...

Gas Porosity Porosity is the presence of gas pockets or voids caused by the entrapment of gas evolved during weld metal solidification. This Porosity is caused due to im

Thermodynamics, Energy in state and it''s transition

Energy in state and it''s transitions

Determine the work transfer, (a) Derive the mathematical expression for Ste...

(a) Derive the mathematical expression for Steady Flow Energy Equation. State the assumption made before the derivation. (b) The internal energy of a substance is provided by th

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