A shunt-wound DC motor with the field coils and rotor connected in parallel (see the figure)...
A shunt-wound DC motor with the field coils and rotor connected in parallel (see the figure) (Figure 1) operates from a 130 V DC power line. The resistance of the field windings, Rf, is 234 ? . The resistance of the rotor, Rr, is 4.10 ? . When the motor is running, the rotor develops an emf E. The motor draws a current of 4.82 A from the line. Friction losses amount to 47.0 W .
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A shunt-wound DC motor with the field coils and rotor connected
in parallel (see the figure)...
In a shunt-wound dc motor with the field coils and rotor connected in parallel (see the...
In a shunt-wound dc motor with the field coils and rotor
connected in parallel (see the figure (Figure 1)), the resistance
Rf of the field coils is Rf = 103 Ω and the resistance Rr of the
rotor is Rr = 5.5 Ω. When a potential difference of V = 120 V is
applied to the brushes and the motor is running at full speed
delivering mechanical power, the current supplied to it is 4.90
A.
Part A.) What is...
A DC Motor 24 of 25 > Part A A shunt-wound DC motor with the field...
A DC Motor 24 of 25 > Part A A shunt-wound DC motor with the field coils and rotor connected in parallel (see the figure) (Figure 1)operates from a 135 V DC power line. The resistance of the field windings, Rf, is 203 2. The resistance of the rotor, R is 5.60 ? , when the motor is running, the rotor develops an emf E. The motor draws a current of 4.90 A from the line. Friction losses amount to...
a dc motor with its rotor and filed coils connected in serieshas an internal resistance of...
a dc motor with its rotor and filed coils connected in serieshas an internal resistance of 3.2Ω. when running at full load on a 120-v lined,the emf inthe rotor is 105V. a)what is the current drawn by the motor from the line? b)what is the power delivered to the motor? c) what is the mechanical power developed by this motor? these are the questions....
The power input to a dc shunt motor during rated-load conditions is 100 W. The rotor...
The power input to a dc shunt motor during rated-load conditions
is 100 W. The rotor speed is 2000 r/min, and the armature voltage
is 100 V. The armature resistance is 2? and Rf = 200 ?. Calculate
the no-load rotor speed.
2. The power input to a dc shunt motor during rated-load conditions is 100W. The rotor speed is 2000r/min, and the armature voltage is 100V. The armature resis- tance is 2 Ω and Rf-200Ω. Calculate the no-load rotor...
Show all working 1. A 4 pole, 220 V, 10 H.P, d.c. shunt motor is rotating...
Show all working 1. A 4 pole, 220 V, 10 H.P, d.c. shunt motor is rotating at a speed of 320 rpm. Then the developed useful torque is 2. A 4 pole, lap wound d.c. motor drawing an armature current of 20 A has 360 conductors. If the flux per pole is 0.015 Wb then the gross torque developed by the armature of motor is 3. A 220 V, d.c. motor draws an armature current of 20 A. Its armature...
Problem 3: DC machine A shunt DC motor rated at V,'. 300 V, with field resistance...
Problem 3: DC machine A shunt DC motor rated at V,'. 300 V, with field resistance of Rf 600 0, armature 0.2 , resistance of R, 30.5 A (total current) when rated-load at n, consumes 916.8 rpm. Armature rotational loss (consisting of fan, friction and core loss (consisting of field resistance, armature a) Find Prot (rotational load), Pshaft and efficiency at rated load. - Assume that the rotational loss is constant and P,aft is now 50% in the case of...
A 250-V shunt-connected DC motor runs at 1500 rpm when it is not connected to any...
A 250-V shunt-connected DC motor runs at 1500 rpm when it is not connected to any external load. When the motor is connected to an external load, it draws a line current of 40A. The motor has an armature resistance of 1 ? and a field circuit resistance of 100 ?. Assume that the rotational loss torque is 2 Nm and is independent of the speed (a) Find the line current of the motor when there is no external load....
A 8250 w shunt DC motor has a terminal voltage of 300 V. A field resistance...
A 8250 w shunt DC motor has a terminal voltage of 300 V. A field resistance Rf of 40 Ω, and an armature resistance Ra of 250 mm2. The field winding has 1500 turns. An adjustable resistance Rad is connected in series to the field winding. Rad is set at 20 Ω, but it can vary from 0 to 80 Ω. The magnetization curve is shown in Figure.1 and it is taken at a speed of 1200 rpm. (Armature reaction...
A shunt connected DC motor has independent control over armature and field c The motor ratings...
A shunt connected DC motor has independent control over armature and field c The motor ratings are P watts, n RPM, Ia armature amperes, V volts on the armature, and Ir field amperes. Assuming a linear magnetic structure and ignoring all losses (resistance, windage and friction) complete the following table. Show your calculations Field Current VoltageArmatureSpeed Current Torque Power Ratings Case l Case 2 Case 3 ½la 2 1r
A 220 V DC shunt motor has an armature resistance, Re-0.1 S2, a field resistance, Ry=100...
A 220 V DC shunt motor has an armature resistance, Re-0.1 S2, a field resistance, Ry=100 12, and negligible rotational losses. Under certain load conditions, the shunt motor runs at 1600 rpm while drawing a total current, I = 100 A. Determine: a. the output power of the motor; b. the output torque in N-m; and, c. the efficiency Without making any changes to the applied voltage or the field, the motor operates with a new M mechanical load that...
In a shunt-wound dc motor with the field coils and rotor
connected in parallel (see the figure (Figure 1)), the resistance
Rf of the field coils is Rf = 103 Ω and the resistance Rr of the
rotor is Rr = 5.5 Ω. When a potential difference of V = 120 V is
applied to the brushes and the motor is running at full speed
delivering mechanical power, the current supplied to it is 4.90
A.
Part A.) What is...
A DC Motor 24 of 25 > Part A A shunt-wound DC motor with the field coils and rotor connected in parallel (see the figure) (Figure 1)operates from a 135 V DC power line. The resistance of the field windings, Rf, is 203 2. The resistance of the rotor, R is 5.60 ? , when the motor is running, the rotor develops an emf E. The motor draws a current of 4.90 A from the line. Friction losses amount to...
The power input to a dc shunt motor during rated-load conditions
is 100 W. The rotor speed is 2000 r/min, and the armature voltage
is 100 V. The armature resistance is 2? and Rf = 200 ?. Calculate
the no-load rotor speed.
2. The power input to a dc shunt motor during rated-load conditions is 100W. The rotor speed is 2000r/min, and the armature voltage is 100V. The armature resis- tance is 2 Ω and Rf-200Ω. Calculate the no-load rotor...
Problem 3: DC machine A shunt DC motor rated at V,'. 300 V, with field resistance of Rf 600 0, armature 0.2 , resistance of R, 30.5 A (total current) when rated-load at n, consumes 916.8 rpm. Armature rotational loss (consisting of fan, friction and core loss (consisting of field resistance, armature a) Find Prot (rotational load), Pshaft and efficiency at rated load. - Assume that the rotational loss is constant and P,aft is now 50% in the case of...
A 250-V shunt-connected DC motor runs at 1500 rpm when it is not connected to any external load. When the motor is connected to an external load, it draws a line current of 40A. The motor has an armature resistance of 1 ? and a field circuit resistance of 100 ?. Assume that the rotational loss torque is 2 Nm and is independent of the speed (a) Find the line current of the motor when there is no external load....
A 8250 w shunt DC motor has a terminal voltage of 300 V. A field resistance Rf of 40 Ω, and an armature resistance Ra of 250 mm2. The field winding has 1500 turns. An adjustable resistance Rad is connected in series to the field winding. Rad is set at 20 Ω, but it can vary from 0 to 80 Ω. The magnetization curve is shown in Figure.1 and it is taken at a speed of 1200 rpm. (Armature reaction...
A shunt connected DC motor has independent control over armature and field c The motor ratings are P watts, n RPM, Ia armature amperes, V volts on the armature, and Ir field amperes. Assuming a linear magnetic structure and ignoring all losses (resistance, windage and friction) complete the following table. Show your calculations Field Current VoltageArmatureSpeed Current Torque Power Ratings Case l Case 2 Case 3 ½la 2 1r
A 220 V DC shunt motor has an armature resistance, Re-0.1 S2, a field resistance, Ry=100 12, and negligible rotational losses. Under certain load conditions, the shunt motor runs at 1600 rpm while drawing a total current, I = 100 A. Determine: a. the output power of the motor; b. the output torque in N-m; and, c. the efficiency Without making any changes to the applied voltage or the field, the motor operates with a new M mechanical load that...
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