Answered: calculate the torque in newton metre…

calculate the torque in newton metre developed by a 440v dc motor having an armature resistance of 0.25ohms and running at 750rpm when taking currentof 60 amperes

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter32: Three-phase Motors

Section: Chapter Questions

Problem 13RQ: A squirrel-cage induction motor is operating at 1175 RPM and producing a torque of 22 Ib-ft. What is...

See similar textbooks

Related questions

Q: A permanent-magnet DC motor has the following specifications: Motor Armature Supply Voltage = VM =…

A: A machine where electrical energy to mechanical energy conversion takes place is called a motor. A…

Q: A d.c. series motor connected to a 235 V supply takes 43 A at 950 r.p.m. The armature resistance is…

A: Given: DC series motor To find:

Q: A 230 V dc series motor has an armature resistance of 0.2 ohm and field resistance of 0.1 ohm at…

A: Given, Supply voltage, V= 230 V Armature resistance, Ra= 0.2 ohm Field resistance, Rse= 0.1 ohm Line…

Q: (c) A shunt generator delivers 50 kW at 200 V and 450 rpm. The armature resistance is 0.02 ohm and…

A: Use equivalent dc machine model to solve all the parameters Even though the machine operation…

Q: The DC shunt generator with the terminal voltage 350 V, armature drop 7 V and the each brush drop 2…

Q: A 220-volt DC series motor is running at a speed of 800 r.p.m and draws 100 A. Total resistance of…

Q: A 250-V, 4-pole, wave-wound DC series motor has 782 conductors on its armature. It has armature,…

Q: The DC shunt generator with the terminal voltage 375 V, armature drop 7 V and the each brush drop 2…

Q: A series motor develops 164 lb-ft torque when the current is 94A. If the load increases the current…

A: Given,T=164 lb-ftIa=94 ALoad increases the current 50%Flux increase of 20%T'=?

Q: The DC shunt generator with the terminal voltage 375 V, armature drop 8 V and the each brush drop 2…

A: Generator: It is an electromechanical device, that converts the mechanical energy to electrical…

Q: 1. Calculate the torque in Newton meter developed by a 440V dc motor having an armature resistance…

A: The solution can be achieved as follows.

Q: The condition for maximum efficiency of a DC Machine is when Constant losses is equal to O…

A: For maximum efficiency of a DC machine, constant loss must be equal to the variable loss. In DC…

Concept explainers

DC Series Motors

A DC motor is a type of electric motor which converts electric energy into mechanical energy. The forces that are produced by the magnetic field are what those common types of motors rely upon. Either electro-mechanical or electronic, all types of DC motors have some internal mechanism to change the current direction in part of the DC motors. As the DC motors could be powered from existing DC lighting power distribution systems, these motors were the first form of motors widely used. By changing the strength of the current in its field winding or by using a variable supply voltage, the speed of the DC motors can be controlled over a wide range.

Question

calculate the torque in newton metre developed by a 440v dc motor having an armature resistance of 0.25ohms and running at 750rpm when taking currentof 60 amperes

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1 given

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

hotors a) What power is developed by a motor that turns at 1200 rpm and has a torque of 3.0 N-m?
A small series-wound dc motor is operated from a 12-V car battery. Under a normal load, the motor draws 4.0 A, and when the armature is clamped so that it cannot turn, the motor draws 24 A. What is the back emf when the motor is operating normally?
the relation between armature and field currents in a series connected DC motor is O It = If + la O It=la - If O If = la
Help me solve this one
A dc motor takes an armature current of 105 Amps at 480 V when running at 720 rpm. The resistance of the armature circuit is 0.2 ohm and the field resistance is 96 ohms. What is the torque developed in the armature?
A 230v DC series motor takes 30A when giving its rated output at 1400 rpm. It has a field resistance of 0,4 ohms, Calculate the value of the resistance (Ra) of the armature when Eb = 200V. Select the correct response: 0.2 ohms 0.6 ohms 0.8 ohms 0.4 ohms
A 220 V shunt motor has an armature resistance of 0.5 ohm and takes a current of 40 A on full-loads. By how much must the main flux be reduced to raise the speed by 50% if the developed torque increased by 10 %
A separately-excited dc generator develops 288 volts at a certain flux and at a certain speed. What should be the new generated voltage in volts for this machine if the speed is changed to 85 % of the original value and the flux is increased by 67 % from the original value?
A 220 V series motor takes 15 A and runs at 700 rpm. The armature resistance including the resistance of the series winding is 0.8 ohm. At what speed will it run if a 2-ohm resistance is connected in series with supply voltage? Assume the motor is taking the same current.
A series motor runs at 800 r/min when the voltage is 400 V and the current is 25 A. The armature resistance is 0.4 ohm and the Series field resistance is 0.2 ohm. Determine the following: (a) The constant of the motor. If the speed decreases to 600 r/min,the torque increases by 32% and the field increases by 10%, determine the following: (b) The new armature current. (c) The new field current. (d) The new total resistance of the motor in ohm. (e) The additional resistance inserted in series with the motor in ohm.
In a d.c. series motor, the torque developed is 20 Nm at 10 A. If the load current is doubled, the new torque will be (a) 60 Nm (c) 80 Nm (b) 45 Nm (d) 100 Nm
A dc series motor having a resistance of 1.0 ohm between terminals runs at 800 rpm at 200V with a current of 15A. At what speed will it run when connected in series with a 5-ohm resistance, the current maintained at 15A?