Q.3. a) A 220V,80A,1500rpm separately excited dc motor, has an [7] armature resistance of 0.5 12. Its speed needs to be

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Q.3. a) A 220V,80A,1500rpm separately excited dc motor, has an [7] armature resistance of 0.5 12. Its speed needs to be

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Q 3 A A 220v 80a 1500rpm Separately Excited Dc Motor Has An 7 Armature Resistance Of 0 5 12 Its Speed Needs To Be 1
Q 3 A A 220v 80a 1500rpm Separately Excited Dc Motor Has An 7 Armature Resistance Of 0 5 12 Its Speed Needs To Be 1 (52.72 KiB) Viewed 46 times
Q.3. a) A 220V,80A,1500rpm separately excited dc motor, has an [7] armature resistance of 0.5 12. Its speed needs to be controlled over a range of 0-1200rpm with constant full load torque. The input dc supply is 240V and a buck converter is used. If the chopper off time is fixed at 4usec, determine the range of chopper frequencies to achieve this. b) In the above question what kind of control is used? Discuss the [5] various methods used to control a chopper.
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