Electromagnetic theory Problem 1 A) How does a magnetic field form? Explain with an example. B) What is an electromagnet and how is it formed?) C) Explain the rotation force occurring in DC current motors by relating it to the magnetic force. (How a magnetic field creates rotation)) D) Explain the working principle of the squirrel cage asynchronous motor by stating the magnetic fields formed inside it.

Q: Does a DC motor have to be turning in order for it to develop torque? a) yes b) no Most DC motor…

A: The Dc motor is electrical machinery that converts electrical and mechanical energy

Q: d.c. series motor has a wave wound armature with 180 conductors. The armature resistance and the…

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Q: A 500 V D.C. shunt motor having an armature resistance of 1 ohm draws an armature current of 120 A…

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A: Brushless DC motors or permanent DC motors are similar

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A:

Q: a dc shunt motor runs at 900 r.p.m from a 460 V supply when taking an armature current of 25 A.…

A: Take the ratio of back emfs to find the speed at terminal voltage of 230 volts. Back emf is directly…

Q: 3. A 4 pole, 250 dc shunt motor has a lap connected armature with 960 conductors. The flux per pole…

A: The solution can be achieved as follows.

Q: Mechanical Characteristics Next, we will apply Newton's law to write the differential equations that…

A: The above question is based on the mechanical model of a DC motor.

Q: The characteristic (Speed versus armature current) of a dc shunt motor is known as the electrical…

A: The electrical characteristics are,

Q: A DC motor has stall torque of 2 N-m (Newton*meters) and a no-load speed of 2000 RPM. With a load of…

A: Given thatN1=2000 rpmτ1=2 N.mτ2=0.5 N.m Part (a)  Assume that given motor is series motor . For…

Q: A 4 pole, 230 volt, lap wound d.c.  motor has 545 conductors. With a speed of 1200 RPM, the flux per…

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Q: Q.36 Name three factors that determine the torque produced by an induction motor. Select one or…

A: Those  three factors are following in which torque depends upon:- i) the magnitude of rotor current.…

Q: Consider figure and assume that the rotational torque is 200 N-m and the radius of the rotor is 0.25…

A: Given data, Rotational torque = 200 N-m radius of rotor (r) = 0.25 m   We have been asked to find…

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A: Iron losses of motor contain hysteresis and eddy current loss. Hysteresis loss depends upon core…

Q: In a spinning industry, a 215 V, 4 pole shunt motor runs at a speed of 1300 rpm gives an output of 8…

A: In this question we will find dc shunt motor torque , flux etc...