Wednesday 14 December 2011

QUIZ1a (dc motor control) E4102

 QUIZ1a (10 marks)
1.Lakarkan rajah litar motor siri AT.                                                                                   (2 markah)
Sketch the circuit diagram of DC series motor.                                                                   (2 marks)

2. Nyatakan jika kelajuan berkurang,
 Eb =________________
   Φ =________________                                                                                                     (2 markah)
State  if the speed decrease,                
   Eb =________________
   Φ =________________                                                                                                      (2 marks)


3. Motor pirau AT 400V, Ra = 1.5Ω, Rf = 440 Ω berputar tanpa beban dengan jumlah arus, I = 6A dan N= 1000psm. Kirakan kelajuan bila motor beban penuh dan jumlah arus adalah 22A.                (6 markah)
DC shunt motor 400V, Ra = 1.5Ω, Rf = 440 Ω with the total current, I = 6A dan N= 1000rpm when operation in no load condition. Calculate it speed when operation in full load condition with the total current is 22A.                                                                                                                         (6 marks)

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