Compute the minimum line current for the motor, Electrical Engineering

Assignment Help:

A three-phase, wye-connected, four-pole, 400- V, 60-Hz, 15-hp synchronous motor has a synchronous reactance of 3  per phase and negligible armature resistance. The data for its no-load magnetization curve follow:

Field current, A:

2  3.5  4.4  6  8  10  12

Line-to-neutral voltage, V:

100  175  200  232  260  280  295

(a) When the motor operates at full load at 0.8 leading power factor, determine the power angle and the ?eld current.Neglect all losses.

(b) Compute the minimum line current for the motor operating at full load and the corresponding ?eld current.

(c) When themotor runswith an excitation of 10 A while taking an armature current of 25 A, calculate the power developed and the power
factor.

(d) If the excitation is adjusted such that the magnitudes of the excitation voltage and the terminal voltage are equal, and if the motor is taking 20 A, ?nd the torque developed.


Related Discussions:- Compute the minimum line current for the motor

Define the binary counting - counters, Define the Binary Counting - Counter...

Define the Binary Counting - Counters? The Binary counter is capable to be constructed from J-K flip-flops by taking the output of one cell to the clock input of the next The J

Scatter Diagrams - Quality Tools for Improvement, Scatter Diagrams - Qualit...

Scatter Diagrams - Quality Tools for Improvement Scatter diagrams are graphical tools which attempt to depict the influence in which one variable has on another. A general dia

Give a few applications of superconductors, Give a few applications of supe...

Give a few applications of superconductors. Also give three applications of superconductors. Application of superconductors in Electrical and Electronic Engineering (i) The

Single direction pump, Modify the design of the circuit shown in FIGURE and...

Modify the design of the circuit shown in FIGURE and draw a circuit diagram to provide rotary actuation in both directions using a single direction pump (to replace the bi-directio

C R O DELAY LINE, WHAT IS THE FUNCTION OF DELAY LINE IN CRO

WHAT IS THE FUNCTION OF DELAY LINE IN CRO

assembly language program , Write an Assembly language program that will p...

Write an Assembly language program that will produce a PWM signal with a desired average voltage. The user selects the desired average voltage by pressing keys 1 - 4. If the

Requirement specification for the monitor and alarm system, Prepare a User ...

Prepare a User Requirement Specification for the monitor and alarm system. User Requirements Specification should be written in a clear and unambiguous manner to state: • The

Applied mechanics, State whether Lamis theorem is applicable for more than ...

State whether Lamis theorem is applicable for more than three coplanar concurrent forces?

Determine the current for given capacitance values, Q. Consider the circuit...

Q. Consider the circuit of Figure. Determine and sketch i L (t) and v C (t) for capacitance values of (a) 1/6 F, (b) 1/8 F, and (c) 1 / 26 F. Note that the capacitance values ar

Compute efficiency of 4 hours full load at 0.8 power factor, Q. A 10-kVA tr...

Q. A 10-kVA transformer is known to have an iron loss of 150 W and a full-load copper loss of 250 W. If the transformer has the following load cycle, compute its all-day efficiency

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