Explain resolvers and magnetic pickups as a encoder.
[7 marks]List out selection criteria for dc motor for incremental motion applications.
[7 marks]Explain permanent magnet moving coil dc motor.
[7 marks]Explain the techniques for minimizing torsional resonance effect in detail.
[7 marks]List out all methods of speed control of dc motor and explain any one in detail.
[7 marks]Write a short note on unidirectional servo amplifier.
Explain bipolar PWM amplifiers.
[7 marks]Draw and explain velocity control system with block diagram.
[7 marks]Write short not on phase locked servo system.
[7 marks]Describe the hybrid type step motor with relevant waveform/diagram.
[7 marks]List out the selection criteria for stepper motor. Explain step angle resolution and torque requirements.
[7 marks]What are the advantages and disadvantages of step motors? Explain the step motor performance characteristics in detail.
[7 marks]Explain any two application of step motor.
[7 marks]Explain any one suppression circuit for DC motor control with diagram.
[7 marks]Explain effect of lead angle in closed loop control of step motor.
[7 marks]Draw and explain bidirectional four-phase single and two phase on logic sequencer circuit with waveform of output phase for each pulses.
[7 marks]Why over drive circuits are required for step motors? Explain dual voltage control circuit.
[7 marks]