8. Calculation questions: The technical data of a separately excited DC motor are as follows: PN = 8.5kw, UN = 220V, IN = 35A, nN = 1648r/ min, Ra = 0.492, try to find out: 1) Ideal no-load speed no and rated torque TN; 2) When the additional resistance of armature is 2.52 and 4.502 respectively, what is the corresponding motor speed under the rated load? (

Q: The technical data of a separately excited DC motor are as follows: PN = 8.5kw, UN = 220V, IN = 35A,…

A: Given rated speed N=1648 rpm rated armature current Ia=35 A rated armature resistance Ra=0.6 Ω P=8.5…

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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: 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: Q9) Specifications for a PM DC motor are as follows: electrical constant (KEMF) = 0.014V/rpm • and…

A: Given Data:A PMDC motor with,Electrical constant Armature resistance Input DC voltage To…

Q: Consider a shunt DC motor with an armature resistance RA=0.2 ohm and terminal voltage VT = 160 V.…

A: Given Data: VT = 160 V Ra = 0.2 ohm Ia = 60 A N = 1517 rpm Ploss = 848 Watt

Speed control of motor

Speed control by DC motor-speed controller is required to realize variable speed drive. Whenever a motor drives a particular load, it is called drive, and variable speed drive refers to a load requiring variable speed. All this is obtained by a DC motor speed controller.