Please do not send the AI solution as it is full of errors. Solve the question yourself, please. Q- If you have a unipolar winding stepper motor, draw the driver and the control circuit. In subject (A stepper motor driver circuit and direction control using Arduino microcontroller)
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- Q4/ Chose the correct answer for the following 1. In BLDC motor field winding is kept on a) Stator b) Rotor c) Can be placed anywhere d) Absent 2. By electronic circuitry BLDC can be controlled for both constant and variable torque operation. a) True b) False 3. In medical fields which DC motor is widely used? a) PMDC b) BLDC 4. Construction of BLDC is exactly similar to the a) Conventional DC motor c) Permanent magnet synchronous motor b) Induction motor 5. Typical brushless motor doesn't have a) Commutator b) Permanent magnet 6. The sensor most commonly used in the BLDC motor is a) Thermo Sensor b) Relay Sensor c) Brushed DC motor d) Cannot be determined d) Totally different construction c) Electronic controller d) Fixed armature c) Hall Sensor d) Power SensorDescribe what is meant by sequence control.DA de machine is controlled by the step-down de-de converter shown below. The armature inductance La =0.2 mH and the armature resistance can be neglected. The armature current is 5A. The Buck converter is operating at the switching frequency is 30 kHz and the duty ratio is 0.8. + > ~ Answer the following questions: 1) Calculate the input voltage (Va) if the output voltage (ea = 200 V). 2) Find the ripple in the armature current (la). 3) Calculate the maximum and minimum values of the armature current (la). 4) Sketch the armature current (ia (t)) and the supply current (ig(t)).
- The parameters of a three-phase, 50 Hz, 6-pole, 400 V star connected induction motor are r1 = 0.3 ohm, x1 = 0.5 ohm, r’2 = 0.15 ohm and x’2 = 0.2 ohm. The voltage and frequency of the induction motor is controlled by a power electronic converter (inverter). Calculate the required inverter output frequency and voltage to drive the induction motor load at 0.2 the rated speed of the motor and calculate the current drawn by the motor for that case. The formula for the maximum slip is given below:How can I write the Verilog test bench and generate and verify the associated timing report of it?9.a. A servo system is oscillating at standstill. This is an indication thatA. the following error limit has been exceeded.B. a motor winding is open.C. the system gain is too high. 9.b. In a DC servo motor system, the tachometer feeds back a voltage that’s proportional to motor speed.Where does this voltage go to?A. The interpolator cardB. The driverC. The CPU in the main controller
- 13. A synchronous machine is run as an unloaded motor. If a low voltage is supplied at the ratedfrequency, and if the full-load armature current flows, a test is being run to determine theA. windage loss.B. I²R loss.C. stray-load loss.D. core loss. Note: I have doubts if it is the letter A or the letter B, can you help me in this question, thanks.6. The block diagram of a video tape drive is shown in Figure Q.6. It is important for the quality of the video image that the tape spool is rotated at a particular reference speed, m,. The actual speed of the tape, o, is sensed, and fed back, any error, E(s) being passed to the controller, G(s), which controls the torque motor. The tape is also subject to torque disturbance, D(s) due to frictional and other effects. a) It is proposed to use a simple proportional controller. Assuming no change in reference speed, calculate the necessary proportional gain, K„, if the maximum allowable steady state error is 0.01rad/s in response to a step disturbance torque of 1Nm. b) Derivative action is added to the controller. Calculate the necessary proportional and derivative gains K, and K,, if the maximum allowable overshoot in speed is 20%, and the speed must settle to its final value in less than 0.25s in response to a unit step change in reference speed, assuming no disturbance. c) Using the…6. The block diagram of a video tape drive is shown in Figure Q.6. It is important for the quality of the video image that the tape spool is rotated at a particular reference speed, 0,. The actual speed of the tape, w, is sensed, and fed back, any error, E(s) being passed to the controller, G(s), which controls the torque motor. The tape is also subject to torque disturbance, D(s) due to frictional and other effects. a) It is proposed to use a simple proportional controller. Assuming there is no disturbance, calculate the necessary proportional gain, K,, if the maximum allowable steady state error is 2% in response to a unit step change in reference speed, w,. b) Derivative action is added to the controller. Calculate the necessary proportional and derivative gains K, and K, if the rise time is to be 0.04s and the peak time is to be 0.1s in response to a unit step change in reference speed, assuming no disturbance. c) Using the controller designed in part b), calculate the steady state…
- List some advantages of solid-state control.Needs Complete solution with 100 % accuracy.25.a. The type of sensors that are used on most simple brushless motors to identify motor rotor position aretheA. field-effect sensors.B. optical-range sensors.C. hall-effect sensors.D. capacitive sensor. 25.b. An encoder is being used instead of a tachometer in a DC servo system. This system of speed control iscalledA. dual-purpose feedback.B. open-loop feedback.C. dual-connection feedback.D. bit counting.
