The Question is...
Calculate the ampere-turns of magnetomotive force generated by the shunt and series field windings.
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The Question is...
Calculate the ampere-turns of magnetomotive force generated by
the shunt and series field...
A long-shunt, cumulatively compounded dc generator has 1800 shunt-field turns per pole and 12 series-field turns...
A long-shunt, cumulatively compounded dc generator has 1800 shunt-field turns per pole and 12 series-field turns per pole. The armature resistance is 0.12 ohm, the series-field resistance is 0.04 ohm, and the shunt-field resistance is 210 ohms Data for the open-circuit characteristic at 1700 r/min is as follows: Volts 110 200 280 300 Amperes 0.5 1.9 2.35 The generator supplies a load of 15 kW at 200 V when it is driven at 1700 r/min. Determine the speed at which...
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) The input current to a 220 V, short-shunt compound motor at no load is 6 A. The shunt- field c...
a) The input current to a 220 V, short-shunt compound motor at no load is 6 A. The shunt- field circuit resistance is 220 Ω; the armature resistance is 0.112, and the series-field resistance is 0.1 Ω, what is the stray power loss ? (b) Assume the input rating of the motor in Part (a) to be 66 A at 220 V with a no-load speed of 1000 rpm. If the stray power loss varies as the counter-electromotive force and...
RedID: Name: Question 3. (18 Marks) A 10-hp, 130V, series dc motor, shown here, has an armature resistance of 0.1 Ω and a series field resistance of also 0.1. The number of turns of series coil N...
RedID: Name: Question 3. (18 Marks) A 10-hp, 130V, series dc motor, shown here, has an armature resistance of 0.1 Ω and a series field resistance of also 0.1. The number of turns of series coil N,-500. At the load 60 A, the speed is 850 r/min. Its magnetization curve is shown below. The core losses are 220 W and the mechanical losses are 230 W at this load. Assume that the mechanical losses vary as the cube of the...
Question (3) Speed Control [10 Marks A 50 hp, 220 V, 1500 rpm DC shunt motor...
Question (3) Speed Control [10 Marks A 50 hp, 220 V, 1500 rpm DC shunt motor with an armature resistance of 0.04 Q and a field resistance of 50 Q. The motor has compensating windings, so armature reactance can be ignored. Mechanical and core losses may be ignored also. The moter is driving a load toque that is proportional with speed, Ti a (n). The motor is driving a load with a line current of 80 A and an initial...
Can you help me to solve this question, please:) B3. (a) Given the magnetic circuit below:...
Can you help me to solve this
question, please:)
B3. (a) Given the magnetic circuit below: Path P= 50 cm 5A 300 turns coil A= 6 cm Fig. B3(a) (1) Determine the magnetomotive force (MMF) produced by the coil; (3 marks) (ii) Calculate the average magnetic field strength (H) in the ring: (3 marks) (iii) If the relative magnetic permeability (lly) of the ring material is 1200, find the average magnetic flux density (B) in the ring. Given lo =...
Question 31.8 and question 31.27 000 W A strong a unifrm magnetic field of 1.60 T...
Question 31.8 and question 31.27
000 W A strong a unifrm magnetic field of 1.60 T over a cross-sectional area of 0320 m2. A col' having 230 turns and a total resistance of 19.0 n is placed around the electromagnet. The current in the electromagnet is then smoothly reduced until it reaches zero in 20.0 ms. What is the current induced in the col? 31 P 027 MI F The figure below shows a top view of a bar that...
Question 1 a) Calculate the Effective Resistance of the circuit and total current of the network...
Question 1 a) Calculate the Effective Resistance of the circuit and total current of the network in figure 1 (5 marks) b) Calculate the Effective Resistance of the Network of Resistors in figure 2 (5 marks) Total 10 marks Space to answer Question 1 here + 9V R 90 92 SRZ 45 32 Rz 180 32 Figure 1: 10 10 102 102 А 320 3202 320 19 B Figure 2 Question 2 a) Explain the assumptions made in the definition...
PH 142 Total: 25 Due: 02/01/19 at Question 3-6 points (a) Calculate the electric field in...
PH 142 Total: 25 Due: 02/01/19 at Question 3-6 points (a) Calculate the electric field in a cell membrane with a thickness of 8nm when the membrane potential is -70 mV. (2 points) (b) If a Sodium ion, Na", moves from inside the cell to outside the cell, calculate the change in the ion's electric potential energy. Does it increase or decrease? (2 Points) (e) In one cycle the sodium-potassium pump removes 3 sodium ions from the cell while importing...
Can you help me to solve question B4 , please:) please B1. (a) A DC circuit...
Can you help me to solve
question B4 , please:)
please
B1. (a) A DC circuit is shown in Figure Bl. 1092 B A 802 702 1402 18V Figure B1 Calculate (i) the total resistance across A and B (RT); (5 marks) (11) the total current from the DC supply (Is); (3 marks) (111) the potential difference(p.d.) across the 1422 resistor (V149); (2 marks) (iv) the current flowing through 1022 (11092); (3 marks) (v) the power dissipated by RI (PT)...
A long-shunt, cumulatively compounded dc generator has 1800 shunt-field turns per pole and 12 series-field turns per pole. The armature resistance is 0.12 ohm, the series-field resistance is 0.04 ohm, and the shunt-field resistance is 210 ohms Data for the open-circuit characteristic at 1700 r/min is as follows: Volts 110 200 280 300 Amperes 0.5 1.9 2.35 The generator supplies a load of 15 kW at 200 V when it is driven at 1700 r/min. Determine the speed at which...
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) The input current to a 220 V, short-shunt compound motor at no load is 6 A. The shunt- field circuit resistance is 220 Ω; the armature resistance is 0.112, and the series-field resistance is 0.1 Ω, what is the stray power loss ? (b) Assume the input rating of the motor in Part (a) to be 66 A at 220 V with a no-load speed of 1000 rpm. If the stray power loss varies as the counter-electromotive force and...
RedID: Name: Question 3. (18 Marks) A 10-hp, 130V, series dc motor, shown here, has an armature resistance of 0.1 Ω and a series field resistance of also 0.1. The number of turns of series coil N,-500. At the load 60 A, the speed is 850 r/min. Its magnetization curve is shown below. The core losses are 220 W and the mechanical losses are 230 W at this load. Assume that the mechanical losses vary as the cube of the...
Question (3) Speed Control [10 Marks A 50 hp, 220 V, 1500 rpm DC shunt motor with an armature resistance of 0.04 Q and a field resistance of 50 Q. The motor has compensating windings, so armature reactance can be ignored. Mechanical and core losses may be ignored also. The moter is driving a load toque that is proportional with speed, Ti a (n). The motor is driving a load with a line current of 80 A and an initial...
Can you help me to solve this
question, please:)
B3. (a) Given the magnetic circuit below: Path P= 50 cm 5A 300 turns coil A= 6 cm Fig. B3(a) (1) Determine the magnetomotive force (MMF) produced by the coil; (3 marks) (ii) Calculate the average magnetic field strength (H) in the ring: (3 marks) (iii) If the relative magnetic permeability (lly) of the ring material is 1200, find the average magnetic flux density (B) in the ring. Given lo =...
Question 31.8 and question 31.27
000 W A strong a unifrm magnetic field of 1.60 T over a cross-sectional area of 0320 m2. A col' having 230 turns and a total resistance of 19.0 n is placed around the electromagnet. The current in the electromagnet is then smoothly reduced until it reaches zero in 20.0 ms. What is the current induced in the col? 31 P 027 MI F The figure below shows a top view of a bar that...
Question 1 a) Calculate the Effective Resistance of the circuit and total current of the network in figure 1 (5 marks) b) Calculate the Effective Resistance of the Network of Resistors in figure 2 (5 marks) Total 10 marks Space to answer Question 1 here + 9V R 90 92 SRZ 45 32 Rz 180 32 Figure 1: 10 10 102 102 А 320 3202 320 19 B Figure 2 Question 2 a) Explain the assumptions made in the definition...
PH 142 Total: 25 Due: 02/01/19 at Question 3-6 points (a) Calculate the electric field in a cell membrane with a thickness of 8nm when the membrane potential is -70 mV. (2 points) (b) If a Sodium ion, Na", moves from inside the cell to outside the cell, calculate the change in the ion's electric potential energy. Does it increase or decrease? (2 Points) (e) In one cycle the sodium-potassium pump removes 3 sodium ions from the cell while importing...
Can you help me to solve
question B4 , please:)
please
B1. (a) A DC circuit is shown in Figure Bl. 1092 B A 802 702 1402 18V Figure B1 Calculate (i) the total resistance across A and B (RT); (5 marks) (11) the total current from the DC supply (Is); (3 marks) (111) the potential difference(p.d.) across the 1422 resistor (V149); (2 marks) (iv) the current flowing through 1022 (11092); (3 marks) (v) the power dissipated by RI (PT)...
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