4.a. An inverter can be programmed to stop an AC motor quickly by enabling A. DC voltage injection to the motor. B. a reverse pulse action. C. an internal brake. D. a stationary AC waveform.
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Q: where did you get the 746 watts?
A: Since, the power is given in hp.i.e., Po=40 hp
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A: In this answer we will find the full load current of the motor as explained below.
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4.a. An inverter can be programmed to stop an AC motor quickly by enabling
A. DC voltage injection to the motor.
B. a reverse pulse action.
C. an internal brake.
D. a stationary AC waveform.
4.b. The typical switching frequency of a brushless servo motor driver is
A. 10 kHz.
B. 5 kHz.
C. 25 kHz.
D. 15 kHz.
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- An inverter can be programmed to stop an AC motor quickly by enabling A. a stationary AC waveform.B. a reverse pulse action.C. DC voltage injection to the motor. D. an internal brakeIs The ac sine wave supplied to the motor artificially produced by an inverter stage in the Flux vector drive5. Define stepper motora. Explain the internal structure of stepper motorb. With Table explain the clockwise and anticlockwise rotation of stepper motorc. With neat interface diagram and program explain how to interface stepper motor to 8086microprocessor.
- List and Describe the major specifications of the satellite power control unit (PCU)Explain the concept of motherboard power phases and voltage regulation modules (VRMs). How do they impact the stability and overclocking potential of a computer system?Discuss how Inverter type generators are ensuring better voltage regulations?
- 1.a. 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 CPU in the main controllerC. The driverD. The axis logic card1.b. A type of feedback device that uses a rotor and senses the position of the motor by means of sine andcosine waveforms is called a/anA. tachometer.B. encoder.C. resolver.D. alternator.Determine the process stages of the observed control system according to the process design on the PID Controlled Automatic Water Heater according to the following pictureDescribe what is meant by sequence control.
- Industrial Motor Controls 18.a. The PLC motor speed control system you are working on has an analog current loop between the D/Amodule and the frequency inverter. What is the best method of checking this loop current?A. Open one of the signal wires in the loop and install a high-impedance VOM in series with the loop.B. Measure the voltage between the SIGNAL IN and +10V terminals of the inverter.C. Measure the voltage across the terminals of the D/A module.D. Open the loop and place a low-impedance VOM in series with the loop.18.b. The register that is assigned to a D/A module in a motor speed control circuit must be assigned to thatD/A module. How is this done?A. By placing the register for the D/A module in a configuration tableB. By forcing a value into the registerC. The registers are previously assigned by the PLC manufacturer.D. By setting DIP switches11. Why is the conduction angle greater with an inductive load than with a purely resistive load? 12. For a full-wave phase control circuit draw the output voltage and current waveforms when firing angle α = (45-X)° (Here X= 10). Consider the load to be inductive. 13. What point in a single-phase ac waveform is used as a reference point for timing the thyristor gate pulses?- Industrial Motor Controls 6.a. Where would be the first place to check if a PLC-controlled motor speed control system fails and themotor stops turning?A. At the auxiliary power supplyB. At the motor speed controller for signs of an error codeC. At the ladder logic for the register assigned to the D/A moduleD. At the D/A module6.b. What is the purpose of relay CRE in the roll stand machine?A. Relay CRE is used as an emergency stop relay.B. Relay CRE is used to control an alarm light.C. Relay CRE is used to power the PLC.D. Relay CRE is used to power the input modules.