ACT1

(Practical Application) #1 ) you are working as a plant electrician. It is your job to install a 300 hp three phase squirrel cage induction motor. The supply voltage is 480 V. The power company has determined that the maximum amount of starting current that can be permitted by any motor in the plant is 3000 A. The motor nameplate is as follows(photo) . Will it be possible to start this motor across the line, or will it be necessary to use a reduced voltage starter to reduce starting current?

A motor is required for an industrial air extraction system. The fan speed should be constant between 0 rpm and 2900 rpm, say two speeds. The maximum torque to nominal torque ratio should be no more than 4.0, the torque rating should be at around 100 Nm. The power factor should not be lower than 0.8 for power factor correction reasons.A 100A miniature circuit breaker (MCB) will be used to protect the motor. The enclosure should meet IP55 standard, and the feet are to be bolted to the stator and made of cast iron. From the ABB motors data sheet link attached select a suitable motor, giving the motor type number.     https://library.e.abb.com/public/7b37518ea1d0cb94c1257b130056f26d/General%20performance%20motors%20EN%2002_2010.pdf

A motor is required for an industrial air extraction system.The fan speed should be constant between 0 rpm and 2900 rpm, say two speeds.The maximum torque to nominal torque ratio should be no more than 4.0, the torque rating should be at around 100 Nm. The power factor should not be lower than 0.8 for power factor correction reasons.A 100A miniature circuit breaker (MCB) will be used to protect the motor.The enclosure should meet IP55 standard, and the feet are to be bolted to the stator and made of cast iron. From the ABB motors data sheet link attached select a suitable motor, giving the motor type number.   A motor is also required for an industrial wood chipper. From the ABB motors data sheet link attached select a suitable motor, giving the motor type number   https://library.e.abb.com/public/7b37518ea1d0cb94c1257b130056f26d/General%20performance%20motors%20EN%2002_2010.pdf

State the functions of the components associated with the DOL starter

As an electrical and electronic engineer, your manager has asked you to write a report for the attention of new employees, listing and describing the operation of safety devices that are commonly found offices and other industrial situations. The report should include all of the details in the task below.     Task   For the following application, list two electrical safety devices that can be used, and describe their operation:A Star delta starting induction motors

10.a. A normal commutator will have which one of the following colors where the brushes contact thecommutator?A. Slate-grayB. Chocolate-brownC. Auburn-brownD. Black 10.b. If an electronic control system is starting a motor, it will keep start-up current within limits by usingA. an acceleration ramp.B. coast-up system.C. a rheostat and a relay.D. a pulsed diode control.

Create a Sequence Diagram about Temperature Controlled Electric Fan with the following: *Thermistor *Microcontroller *Motor Driver *Motor

Suggest a sensor that could be used as part of the control system for a furnace to monitor the rate at which heating oil flows along a pipe. The output from the measurement system is to be an electrical signal which can be used to adjust the speed of the oil pump. The system must be capable of operating continuously and automatically, without adjustment, for long periods of time.   source:  Mechatronics: Electronic Control Systems in Mechanical and Electrical Engineering 6th Edition by W. Bolton  question 2.16

Your assumption is that you measure Insulation Resistance [IR] using MeggerTest on an Induction Motor that works on a line voltage of 440 Volts 50 Hz with a measurable test result of 0.5 M Ohm. Question : a. What about your conclusion, is the measurement value still in accordance with the provisions of the Class Recommendation?. b. What are your actions to be able to maintain and maintain the best IR value of electric motors ?

What is the multiplier for the service demand of electric vehicle charging equipment

Which Battery is discharging and which one is charging ? and why ?

Explain the basic principles of voltage regulation in a power system.

Question 6 3G speeds Compare the data rates (up/down) of: a) EV-DO Rev B. b) HSPA+. Full explain this question very fast solution sent me step by step Not:-  Text typing work only

Technician A says when testing the voltage output, if the charging voltage is too high, the cause could be an open field wire from the regulator. Technician B says a loose or glazed drive belt could be the cause of too high charging voltage. Who is correct? A only B only Both A and B Neither A or B Technician A says that poor connection at the generator output wire can cause charging systems problems. Technician B says that many charging system circuits contain a circuit protection device. Who is correct? A only B only Both A and B Neither A or B

Let’s assume that in these two pictures, the batteries in the remote control in picture 1 are aligned in parallel, and the batteries in the remote control in picture 2 are aligned in series. What benefit does a battery alignment in a series provide? In parallel?​ Where might you see remote controls with each type of battery arrangement (series and parallel) used?

A chair transporter is designed to move 900 skiers per hour from base A to summit B. The average weight of a skier is 160 lb and the average speed of the transporter is 250 ft / min. Determine, a) the average power required, b) the required capacity of the motor if the mechanical efficiency is 85 percent and an overload of 300 percent is allowed

A 2.8 KW, 400V, 50Hz, 4 pole, 1370 rpm, delta connected squirrel cage IM has the following parameters referred to stator. R_1=2 Ohm, R_2=5, x_1=x_2=5 Ohm x_m=80 Ohm. Motor speed is controlled by stator voltage control. When driving a fan load it runs at rated speed at rated voltage. calculate i) motor terminal voltage, current and torque at 1200 rpm and II) motor speed, current and torque for the terminal voltage of 300V

A Universal motor was operated under load from 115 volts, 60-Hz source under which condition it took 284 watts , developed 3.2 oz-ft of torque. what is the power developed by the motor in horsepower.

Tape/Hard drive etc and its relation to faraday's law hand written please.

Draw an elementary diagram of a fractional horsepower, manual motor starter

Read the instruction and provide a detailed solution for every question.

explain the power flow path through a transfer box in each of the following system conditions: a. High range two wheel drive b. High range four wheel drive c. Low range four wheel drive

Please kindly help me to answer this QUESTION. Thank you very much! Give the name, simple description, symbol, and uses of the following DC devices.Kindly separate the "DESCRIPTIONS" of each DC Devices and the "USES" of each DC Devices. Kindly Provide clear symbols for each DC Devices with their name that are properly aligned to them. DPST Fixed DC source Variable DC source D’Arsonval Galvanometer Wattmeter Voltmeter Connecting Wires Rheostat Ammeter Switch

MECT361 Mechatronics Components and Instrumentation PLEASE GIVE ME THE short answer and wite it by keyword thanks

A three-terminal manual starting rheostat has a resistance of 5.2 ohms in its starting resistor.  The holding coil resistance is 10 ohms.  This starting rheostat is connected to a shunt motor. The resistance of the armature is 0.22 ohm; the resistance of the shunt field is 100 ohms. The line voltage is 220VDC. a. What is the starting surge current taken by the motor? b. What is the current in the holding coil with the moveablew arm in the run position? c. What is the CEMF with the movable arm in the on position if the armature current is 20 amps?

Please answer this question. I have also added "Lab 5 To-do Test 1" below.  //LAB5 To-do TEST1: Change this code to implement the behavior described in the prelab section "Programming the Stepper Motor"     //Enable this code to test the stepper motor separately   Serial.println("Turning clockwise"); //output message to serial monitor     steppermotor.setSpeed(60); //set speed to make 20 rotations per minute (each rotation takes 2 seconds)     steppermotor.step(300); //rotate clockwise by 300 steps (5 revolutions since STEPS is 60    //END TEST1