Compute the efficiency at one-half load, Electrical Engineering

Assignment Help:

Q. A certain 10-hp, 230-V motor has a rotational loss of 600 W, a stator copper loss of 350 W, a rotor copper loss of 350 W, and a stray load loss of 50 W. It is not known whether the motor is an induction, synchronous, or dc machine.

(a) Calculate the full-load efficiency.

(b) Compute the efficiency at one-half load, assuming that the stray-loss and rotational losses do not change with load.


Related Discussions:- Compute the efficiency at one-half load

Design a mealy system, Design a Mealy system whose output is 1 iff there ha...

Design a Mealy system whose output is 1 iff there have been exactly two 1's followed by a 0 and then a 1. (a) Assume overlapping is allowed (b) Assume overlapping is not

What are advantages of segmentation, What are advantages of segmentation...

What are advantages of segmentation ? However because the segment register is 16 bit broad and the memory requires 20 bits for an address the 8086 appends 4 bits segment reg

Explain the meaning of duality in boolean algebra?, Explain the Meaning of ...

Explain the Meaning of Duality in Boolean Algebra? Any algebraic equality that derived from the axioms of the Boolean algebra remains true when the operators OR and AND are in

Find the real and reactive powers per phase, Q. A 345-kV, 60-Hz, three-phas...

Q. A 345-kV, 60-Hz, three-phase transmission line delivers 600 MVA at 0.866 power factor lagging to a three-phase load connected to its receiving- end terminals. Assuming that the

Circuits, Circuits Typical  electronics circuits  are created  out  of...

Circuits Typical  electronics circuits  are created  out  of a basis  set of primitive elements such  as capacitors, voltage sources,  resistors,  transistors and inductors. T

Compute the minimum line current for the motor, A three-phase, wye-connecte...

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

Explain the term- electronic mail, Explain the term- Electronic Mail (email...

Explain the term- Electronic Mail (email) Another form of communication is through email. This has the below advantages over video conferencing: -  There are no language pro

Strategic perspective of an organization, Strategic Perspective of An organ...

Strategic Perspective of An organization Strategic perspectives cover functions such as revenue, customer satisfaction, people, procedure and technology. Every organization re

Electromagnetic torque , Electromagnetic torque  The torque is given...

Electromagnetic torque  The torque is given by the force on the armature winding multiplied by its radius. Force on a conductor in magnetic field B is:  F=B.I.L so, T=B

Common-collector amplifier, A common-collector (CC) amplifier is also known...

A common-collector (CC) amplifier is also known as an emitter follower (or a voltage follower) due to the fact that the output voltage "follows" the input by being approximately eq

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