Results and Discussion: 1. Plot machine speed vs resistance
DC series MOTOR...
LAB
Results and Discussion:
1. Plot machine speed vs resistance
2. Plot machine speed vs current
3. Explain the above plots
4. Using DC Motor Theory, explain the current profile you obtained
5. Plot the motor speed against the input voltage. Explain the results obtained.
6. Using the graph, right, determine the torque at each current setting. Plot the motor speed (n) against the torque (T) of the motor. Discuss the results obtained.
7. Calculate the efficiency of the motor at each current setting. Plot the efficiency against torque of the motor.
Homework Answers
DC series MOTOR... LAB I need help answering question 6 and 7. Results and Discussion: 1. Plot machine speed vs resistance 2. Plot machine speed vs current 3. Explain the above plots 4. Using DC M...
DC series MOTOR...
LAB
I need help answering question 6 and 7.
Results and Discussion: 1. Plot machine speed vs resistance 2. Plot machine speed vs current 3. Explain the above plots 4. Using DC Motor Theory, explain the current profile Totque (mV) 12 you obtained Plot the motor speed against the input voltage. Explain the results obtained. Using the graph, right, determine the torque at each current setting. Plot the motor speed (n) against the torque (T) of the...
QUESTIONS Question-3: Draw "speed vs. torque" curve using data in Table-1. The completed graph represents the speed vs. torque characteristics of a typical DC shunt-wound motor. Terax Qu...
QUESTIONS Question-3: Draw "speed vs. torque" curve using data in Table-1. The completed graph represents the speed vs. torque characteristics of a typical DC shunt-wound motor. Terax Question-4: Calculate the speed regulation (full load - 12 lbf.in) using the equation: 2-143) 143 (no load Regulation (full load speed) Speed regulation- % Part-II - Motor Efficiency Calculation: Set the dynamometer control knob at its full CW position (to provide the maximum starting load for the shunt-wound motor). Turn on the power...
1. Name the various parts of a DC machine and give their function. 2. A four-pole...
1. Name the various parts of a DC machine and give their function. 2. A four-pole de machine with a lap wound armature has a total of 652 armature conductors with an armature resistance of 0.1502. When run as a generator on open circuit at a speed of 400rpm, the armature terminal voltage is 262V. Each pole shoe arc has a diameter of 42cm, subtends an angle of 60° and has an axial length of 20cm. 2.1.Calculate the useful flux...
Q5.8：The specifications of machine 5.8. For the machine in the previous question, calculate (a) its no-load speed (b)its rated efficiency-olcoxL-n/nN (c) the following when the speed is ze...
Q5.8：The specifications of machine
5.8. For the machine in the previous question, calculate (a) its no-load speed (b)its rated efficiency-olcoxL-n/nN (c) the following when the speed is zero (stall condition) (i)induced voltage (ii) nput current (ii) output torque (iv) ut power (v)output power (vi) efficiency (d) he speed (in rpm) when the torque is 0.2 Nm 5 A DC machine has a no-load speed of 10,000 rpm and a rated speed of 8,000 rpm when operating with its rated supply...
Considering the plot of open circuit voltage vs. speed, is the machine excited using brushes or a...
Synchronous Machines
Considering the plot of open circuit voltage vs. speed, is the machine excited using brushes or a brushless exciter? Explain your choice 1. Open Circuit Speed Test 200 150 2 100 50 1500 Speed (rpm
Considering the plot of open circuit voltage vs. speed, is the machine excited using brushes or a brushless exciter? Explain your choice 1. Open Circuit Speed Test 200 150 2 100 50 1500 Speed (rpm
HOW KNOW CAN SOLVE 3 (MATLAB CODE ONLY): The following test results are obtained from a...
HOW KNOW CAN SOLVE 3 (MATLAB CODE ONLY):
The following test results are obtained from a 3p, 100hp, 460V, eight-pole, star-connected squirrel-cage induction machine. No-load test: 460 V, 60 Hz, 40 A, 4.2 kW Blocked-rotor test: 100 V, 60 Hz, 140 A, 8.0 kW Average dc resistance between two stator terminals is 0.152 2. - 2.The motor is connected to a 30, 460 V, 60 Hz supply and runs at 873 rpm. Determine and display the: (b) Input current (c)...
A 230 V shunt direct-current machine on no-load has a speed of 900 rpm and a supply current of 2.5 A. The machine parameters are: • Field resistance: 230 Ω • Armature resistance: 0.3 Ω • Voltage drop/...
A 230 V shunt direct-current machine on no-load has a speed of 900 rpm and a supply current of 2.5 A. The machine parameters are: • Field resistance: 230 Ω • Armature resistance: 0.3 Ω • Voltage drop/brush: 1.0 V (current independent) a) Calculate the electromagnetic torque, speed, the output power and the overall efficiency when the supply current is 35 A, assuming that the friction and wind-age torque is constant. (16 points) b) The machine operates now as generator...
need the answer for the question no. 1 ENGR 113 Homework DC Motor Objectives Plot the...
need the answer for the question no. 1
ENGR 113 Homework DC Motor Objectives Plot the Torque-Speed curve for a given DC motor given the stall torque and no load speed values Calculate the rotational power for a DC motor given the stall torque and no load speed values Plot the rotational power on a Torque-Speed curve to see the relationship between torque, speed, and power Calculate the maximum efficiency of a DC motor. Calculate the operating point for a...
An Electric Vehicle (EV) is run by a DC series motor. The motor is fed from...
An Electric Vehicle (EV) is run by a DC series motor. The motor is fed from onboard battery bank through a PWM speed controller. Derive the equation for starting torque, starting current and steady state current of the motor. Plot Torque vs Speed characteristics of the motor under voltage control. Design a buck converter for PWM speed control operation of the motor. Plot the input voltage, output voltage, input current, output current and switching pulses of the converter considering Continuous...
A separated excited dc machine is delivering 50% rated torque at 20% rated speed. Find the...
A separated excited dc machine is delivering 50% rated torque at 20% rated speed. Find the efficiency of the motor at this operating point. The details of the machine are as follows: 1500 kW(rated output power), 600V(rated voltage), 2650A (rated current) 600rpm (rated speed), brush voltage drop = 2V, Filed power input = 50 kW, Ra=3.645 mOhm, La=0.1 mH, Machine frictional torque coefficient = 15 Nm/rad/s. Field current is constant and armature voltage is variable.
DC series MOTOR...
LAB
I need help answering question 6 and 7.
Results and Discussion: 1. Plot machine speed vs resistance 2. Plot machine speed vs current 3. Explain the above plots 4. Using DC Motor Theory, explain the current profile Totque (mV) 12 you obtained Plot the motor speed against the input voltage. Explain the results obtained. Using the graph, right, determine the torque at each current setting. Plot the motor speed (n) against the torque (T) of the...
QUESTIONS Question-3: Draw "speed vs. torque" curve using data in Table-1. The completed graph represents the speed vs. torque characteristics of a typical DC shunt-wound motor. Terax Question-4: Calculate the speed regulation (full load - 12 lbf.in) using the equation: 2-143) 143 (no load Regulation (full load speed) Speed regulation- % Part-II - Motor Efficiency Calculation: Set the dynamometer control knob at its full CW position (to provide the maximum starting load for the shunt-wound motor). Turn on the power...
1. Name the various parts of a DC machine and give their function. 2. A four-pole de machine with a lap wound armature has a total of 652 armature conductors with an armature resistance of 0.1502. When run as a generator on open circuit at a speed of 400rpm, the armature terminal voltage is 262V. Each pole shoe arc has a diameter of 42cm, subtends an angle of 60° and has an axial length of 20cm. 2.1.Calculate the useful flux...
Q5.8：The specifications of machine
5.8. For the machine in the previous question, calculate (a) its no-load speed (b)its rated efficiency-olcoxL-n/nN (c) the following when the speed is zero (stall condition) (i)induced voltage (ii) nput current (ii) output torque (iv) ut power (v)output power (vi) efficiency (d) he speed (in rpm) when the torque is 0.2 Nm 5 A DC machine has a no-load speed of 10,000 rpm and a rated speed of 8,000 rpm when operating with its rated supply...
Synchronous Machines
Considering the plot of open circuit voltage vs. speed, is the machine excited using brushes or a brushless exciter? Explain your choice 1. Open Circuit Speed Test 200 150 2 100 50 1500 Speed (rpm
Considering the plot of open circuit voltage vs. speed, is the machine excited using brushes or a brushless exciter? Explain your choice 1. Open Circuit Speed Test 200 150 2 100 50 1500 Speed (rpm
HOW KNOW CAN SOLVE 3 (MATLAB CODE ONLY):
The following test results are obtained from a 3p, 100hp, 460V, eight-pole, star-connected squirrel-cage induction machine. No-load test: 460 V, 60 Hz, 40 A, 4.2 kW Blocked-rotor test: 100 V, 60 Hz, 140 A, 8.0 kW Average dc resistance between two stator terminals is 0.152 2. - 2.The motor is connected to a 30, 460 V, 60 Hz supply and runs at 873 rpm. Determine and display the: (b) Input current (c)...
need the answer for the question no. 1
ENGR 113 Homework DC Motor Objectives Plot the Torque-Speed curve for a given DC motor given the stall torque and no load speed values Calculate the rotational power for a DC motor given the stall torque and no load speed values Plot the rotational power on a Torque-Speed curve to see the relationship between torque, speed, and power Calculate the maximum efficiency of a DC motor. Calculate the operating point for a...
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