Calculate armature voltage, Electrical Engineering

Assignment Help:

Question:

A DC, separately excited motor is supplied from a 240-V source. When the motor is unloaded, it draws 1A of current from the source. When the motor is loaded, it draws 25A of current and it rotates at 1560 rpm. The field current supplied to the motor remains unchanged and the armature reaction can be neglected. The motor armature resistance is equal to 0.4 Ω. Calculate the following:

a) The armature voltage of the motor under the load.

b) The amount of mechanical power developed by the motor under the load.

c) The no-load speed of the motor.

d) The amount of rotational losses of the motor.

e) The motor efficiency under the specified load if the field circuit power loss is equal to 360 W.


Related Discussions:- Calculate armature voltage

State kirchoff''s current law, State Kirchoff's Current Law Kirchoff's...

State Kirchoff's Current Law Kirchoff's Current Law (KCL) describes at any junction in an electric circuit the total current flowing towards that junction is equivalent to th

Oscilloscope probe compensation, Q.   what is oscilloscope probe compensati...

Q.   what is oscilloscope probe compensation and how is it adjusted?  What effects are noted when the compensation is not correctly adjustment? Direct Probe: This probe  is

Determine the disadvantages of expert systems, Determine the Disadvantages ...

Determine the Disadvantages of expert systems -  Lacks common sense in some decision making processes -  Errors in the knowledge base can result in incorrect decisions being

Explain by using a circuit diagram a darlington pair, Q. Explain by using a...

Q. Explain by using a circuit diagram, a ‘Darlington Pair'. Mention its advantages? THE DARLINGTON PAIR : This is a very special way of direct coupling of two transistors. The

Express the waveform of the staircase type, Q. Express the waveform of the ...

Q. Express the waveform of the staircase type shown in Figure as a sum of step functions.

Draw a centralized spc organization, Q. Draw a centralized SPC organization...

Q. Draw a centralized SPC organization. Ans: A dual processor architecture can be configured to operate in one of three modes: (i)  Standby mode (ii)  Synchronous dupl

State norton''s theorem, Norton's Theorem Nortons Theorem states: "A...

Norton's Theorem Nortons Theorem states: "Any linear circuit containing several energy sources and resistances can be replaced by a single Constant Current generator in para

Digital logic design, how to sort three number in descending order and disp...

how to sort three number in descending order and display on seven segment

What is digital system components, Q. What is Digital system components? ...

Q. What is Digital system components? The reason that digital systems are so inexpensive and yet so powerful is that they consist of very  large numbers of just a few building

What is accelerated graphics port, What is AGP? AGP: The latest additio...

What is AGP? AGP: The latest addition for many computer systems is the inclusion of the accelerated graphics port. This AGP operates at the bus clock frequency of the microproc

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