Homework Answers
Q.no 2 (a), (b), (c) are solved given below:-
Add Answer to:
A separately excited DC motor is known with: Pv-30KWUN-200V, IN-160A, nN-1000rpm, Imax# 1.81. when TL-o5TN, please t...
2. A 208V, two pole, 60 Hz, y connected wound rotor induction motor is rated at...
2. A 208V, two pole, 60 Hz, y connected wound rotor induction motor is rated at 15hp. Its equivalent circuit parameters are R:-0.200, R:-0.120, X.-X-0.410, X-150. The rotational losses are 430W. The motor drives a mechanical load with a slip of 5 percent. By using simplified equivalent circuit calculate; (30 pts) a) The motor speed in revolutions per minute and radians per second. b) The line current c) The stator copper losses. d) The air gap power. e) The power...
5. A 208-V four-pole 60-Hz Y-connected wound-rotor induction motor is rated at 30 hp. Its equivalent...
5. A 208-V four-pole 60-Hz Y-connected wound-rotor induction motor is rated at 30 hp. Its equivalent circuit components are R=0.100 Ry=0.070. X - 10.00 R = 250 X; -0.2100 X=0.21002 Praw=500 W P =0.5% of input at full load For a slip of 0.05, find (a) The line current (b) The induced voltage in the rotor (c) The stator power factor (d) The rotor power factor (e) The rotor frequency (f) The stator copper losses (g) The core loss (h)...
60Hz, 380V, 4 pole 30kW induction motor, When its driving under full load condition, the speed...
60Hz, 380V, 4 pole 30kW induction motor, When its driving under full load condition, the speed is 1746rpm, input current 56.2A power factor 90%. Under no-load condition, input current 17.3A, power factor 13.5%. (In full load operation, assume that the mechanical loss is 25% of the total loss and no other losses.) a) Efficiency under full load b) Find a rotor copper loss under full load c) Core loss d) Find a fixed stator copper loss under full load e)...
You want to buy three-phase asynchronous motor of 60 Hz and 480 V. You find the motor equivalent ...
You want to buy three-phase asynchronous motor of 60 Hz and 480 V. You find the motor equivalent circuit parameters (IEEE model, 6 parameters) on the manufactur-er's website: 4 poles, R1 = 0.119 Ω, R’2 =0.123 Ω, Rfe = 263 Ω, X1 = 0.683 Ω, X’2 = 0.911 Ω and Xφ = 22.8 Ω. For operation with a slip s = 1.9%, friction and ventilation losses reach 495 W. Con-sider a positive sequence balanced supply at rated voltage. Using the...
14. The following details are known about a 200 hp, 500 V, 435 rpm de shunt motor: full-load current is 330 A, insulation class is H, weight is 3400 kg, external diameter of the frame is 915 mm a...
14. The following details are known about a 200 hp, 500 V, 435 rpm de shunt motor: full-load current is 330 A, insulation class is H, weight is 3400 kg, external diameter of the frame is 915 mm and length of the frame is 1260 mm. If the motor is running at full-load, calculate: a. the total losses and efficiency. b, the approximate shunt field exciting current if the shunt field causes 15% of the total losses. the value of...
core (b) A 460-V 60-Hz four-pole Y-connected induction motor is rated at 25 hp. The equivalent...
(b) A 460-V 60-Hz four-pole Y-connected induction motor is ratedat \(25 \mathrm{hp}\). The equivalent circuit parameters are$$ \begin{array}{ll} R_{1}=0.15 \Omega & R_{2}=0.154 \Omega \quad X_{M}=20 \Omega \\ X_{1}=0.852 \Omega & X_{2}=1.066 \Omega \\ P_{\mathrm{F} \& \mathrm{~W}}=400 \mathrm{~W} & P_{\text {misc }}=150 \mathrm{~W} \end{array} $$\(P_{\text {core }}=400 \mathrm{~W}\) (lumped with rotational losses)[14 points]For a slip of \(0.02\), find(1) The line current \(I_{L}\). [3 points](2) The stator power factor. [1 point](3) The rotor power factor. [1 point](4) The rotor frequency. [1 point](5)...
please urgent electrical or mechanical engineer can help? I have 20 hours.I have to finish. Pleaseeee :(
Question 1) A \(380 \mathrm{~V} 60 \mathrm{~Hz}\) two-pole three-phase asynchronous motor has a reverse power factor of 0.80. Stator resistance \(0,200 \Omega\) rotor resistance \(0,120 \Omega\) iron reactance resistance \(150 \Omega\) friction andwind losses \(450 \mathrm{~W}\), iron losses \(1500 \mathrm{~W}\) and stator copper power loss \(1215 \mathrm{~W}\). If the slip is \(5 \%,\) calculate the efficiency of the motor and the shaft moment.Question 2) Three synchronous generators feed 150 of the motors given in the first question. The idle operating...
3ELEC 3600. Problem H8 3-phase Wound Rotor Induction Motor This sheet is page 1. Number all...
3ELEC 3600. Problem H8 3-phase Wound Rotor Induction Motor This sheet is page 1. Number all pages. Consider the following induction machine THREE-PHASE INDUCTION MOTOR DATA* Ratings Line Voltage 2400 V; 72.17 A; Horsepower-300 hp stator frequency60 Hz Design W Poles -4; **Equivalent Circuit Values (in stator ohms Rated Freq)** R1 0.30000 R2'- 0.47159 X2'-1.73000; Jm2.5000 kg-m sq Thevenin Equivalent Circuit Values: RT-0.28524; slip, speed for max Torque0.1375; Rotational Loss Torque-TRL 0.18689 x (speed in rad/s) Nm X1 -1.73000 Xm67.740...
For the motor in Problems motor what is the slip at the pullout torque? What is...
For the motor in Problems motor what is the slip at the pullout torque? What is the pullout torque of this Is equivalent A 20.V four pole 60 H2 Y connected wound rotor induction motor is rated at 10 lip curent components are R -0.2009 R, -0.120 Xy - 15.00 X1 -0410 X; -0.410 Pesca 250 W Panco P -180 W For a slap of os find a The line current by The stator copper losses Pa c) The aur...
2. A 208V, two pole, 60 Hz, y connected wound rotor induction motor is rated at 15hp. Its equivalent circuit parameters are R:-0.200, R:-0.120, X.-X-0.410, X-150. The rotational losses are 430W. The motor drives a mechanical load with a slip of 5 percent. By using simplified equivalent circuit calculate; (30 pts) a) The motor speed in revolutions per minute and radians per second. b) The line current c) The stator copper losses. d) The air gap power. e) The power...
5. A 208-V four-pole 60-Hz Y-connected wound-rotor induction motor is rated at 30 hp. Its equivalent circuit components are R=0.100 Ry=0.070. X - 10.00 R = 250 X; -0.2100 X=0.21002 Praw=500 W P =0.5% of input at full load For a slip of 0.05, find (a) The line current (b) The induced voltage in the rotor (c) The stator power factor (d) The rotor power factor (e) The rotor frequency (f) The stator copper losses (g) The core loss (h)...
14. The following details are known about a 200 hp, 500 V, 435 rpm de shunt motor: full-load current is 330 A, insulation class is H, weight is 3400 kg, external diameter of the frame is 915 mm and length of the frame is 1260 mm. If the motor is running at full-load, calculate: a. the total losses and efficiency. b, the approximate shunt field exciting current if the shunt field causes 15% of the total losses. the value of...
(b) A 460-V 60-Hz four-pole Y-connected induction motor is ratedat \(25 \mathrm{hp}\). The equivalent circuit parameters are$$ \begin{array}{ll} R_{1}=0.15 \Omega & R_{2}=0.154 \Omega \quad X_{M}=20 \Omega \\ X_{1}=0.852 \Omega & X_{2}=1.066 \Omega \\ P_{\mathrm{F} \& \mathrm{~W}}=400 \mathrm{~W} & P_{\text {misc }}=150 \mathrm{~W} \end{array} $$\(P_{\text {core }}=400 \mathrm{~W}\) (lumped with rotational losses)[14 points]For a slip of \(0.02\), find(1) The line current \(I_{L}\). [3 points](2) The stator power factor. [1 point](3) The rotor power factor. [1 point](4) The rotor frequency. [1 point](5)...
3ELEC 3600. Problem H8 3-phase Wound Rotor Induction Motor This sheet is page 1. Number all pages. Consider the following induction machine THREE-PHASE INDUCTION MOTOR DATA* Ratings Line Voltage 2400 V; 72.17 A; Horsepower-300 hp stator frequency60 Hz Design W Poles -4; **Equivalent Circuit Values (in stator ohms Rated Freq)** R1 0.30000 R2'- 0.47159 X2'-1.73000; Jm2.5000 kg-m sq Thevenin Equivalent Circuit Values: RT-0.28524; slip, speed for max Torque0.1375; Rotational Loss Torque-TRL 0.18689 x (speed in rad/s) Nm X1 -1.73000 Xm67.740...
For the motor in Problems motor what is the slip at the pullout torque? What is the pullout torque of this Is equivalent A 20.V four pole 60 H2 Y connected wound rotor induction motor is rated at 10 lip curent components are R -0.2009 R, -0.120 Xy - 15.00 X1 -0410 X; -0.410 Pesca 250 W Panco P -180 W For a slap of os find a The line current by The stator copper losses Pa c) The aur...
Most questions answered within 3 hours.
-
Suppose that on a temperature scale X, water boils at 203.0°X
and freezes at -105.7°X. What...
asked 4 minutes ago -
BaS crystallizes in a cubic unit cell with S2- ions on each
corner and each face....
asked 35 minutes ago -
A. 0≤P(Oi)≤10≤P(Oi)≤1 for each i
B. P(Oi)≤0P(Oi)≤0
C. P(Oi)=1+P(OCi)P(Oi)=1+P(OiC)
D. P(Oi)≥1P(Oi)≥1
If an experiment consists of...
asked 2 hours ago -
A battery has an emf of 9.20V and an internal resistance of 1.20
ohm. a)What resistance...
asked 2 hours ago -
The area of an elastic circular loop decreases at a constant
rate, dA/dt = −6.60×10−3 m2/s...
asked 3 hours ago -
The denaturation of proteins can be described by the
equilibrium
F⇌U
where F and U represent...
asked 4 hours ago -
Please answer what the maximum and minimum force is, and the
angle on the ion is...
asked 4 hours ago -
implement a program that reads a number of rows and a symbol.
The program will draw...
asked 4 hours ago -
Assume that when adults with smartphones are randomly selected,
45% use them in meetings or classes....
asked 4 hours ago -
Determine the number of formula units of
Na2SO4 and moles of oxygen contained in 8.11
moles...
asked 5 hours ago -
Explain in steps on the following code
What would be the output when executed
using System;...
asked 5 hours ago -
Given the information in the table, which of the following
statements is CORRECT?
Stock A
Stock...
asked 5 hours ago