Calculate armature voltage, Electrical Engineering

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.

Posted Date: 2/18/2013 2:31:31 AM | Location : United States







Related Discussions:- Calculate armature voltage, Assignment Help, Ask Question on Calculate armature voltage, Get Answer, Expert's Help, Calculate armature voltage Discussions

Write discussion on Calculate armature voltage
Your posts are moderated
Related Questions
Nodes analysis Analysis using KCL to solve for voltages at every common node of the network and as determines the currents by and voltages across every elements of the network.

Design a logic circuit with 4 inputs A, B, C & D that will produce output ‘1’ only whenever two adjacent input variables are 1’s. A & D are also to be treated as adjacent, impleme

Explain the basic working principle of ultrasonic machining with the help of diagram. What are the different kinds of tool materials explain, tool holders are used in ultrasonic

what is the theory for full wave rectifier with c filter

what is that mean and explain

With the help of neat diagrams illustrate the construction and working of various elements used in hydro-electric power plant. Compare hydro-electric power plant with other type

Q. Three identical impedances of 30 30° are connected in delta to a three-phase 173-V system by conductors that have impedances of 0.8 + j0.6  each. Compute the magnitude of the l

Q. Analog communication systems? An analog message is a continuum of possible amplitudes at any given time, and analog signals are continuous in time and in amplitude, such as

Q. Describe the basic types of Number Systems? Probably the largest stumbling block most beginning programmers encounter when attempting to learn assembly language is the commo

What do you mean by pipelining in an 8086 processor? The computer is composed of two kinds that operate  asynchronously single part called a BIU in the 8086,fetches instruction