1-transfer function of DC series motors (step by step).
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- Q9 / What are the function of brushes , pole and commutator in DC machineIf we need to use a DC generator witha very good voltage regulation we choose: * DC Generators cannot give very good Voltage Regulation Separately-Excited DC Generator Self-Excited Shunt wound DC Generator Self-Excited Series wound DC GeneratorCan you explain the given questions in an original way? Factors Affecting Electrical Energy in DC Generators shunt generators Serial Generators
- 7. A coil having a resistance of 20 ohms and an inductance of 0.75 henry is connected in series with a 30-ohm resistor and to a 120-volt d-c source. A switch across the series resistor is then closed, and the circuit is assumed to be in a steady-state condition. At the instant the switch is opened, what will be the rate of current change and the power delivered by the magnetic field.An ideal dc generator has regulation of 40% 20% O 30% ZeroProbl The rectangular coil in the figure below is in a field B = 0.01a,T. a. Find the torque about the z axis when the coil is in the position shown and carries a current of 10 A b. Find the torque if the coil turns through 90°7 0.2m & 0.2m 1-10A
- 10. A potential difference of 250 V is applied to a field winding at 15-C and the current is 5 A. What will be the temperature of the winding when current has fallen to 3.91 A applied voltage being constant. Assume temperature coefficient at 15'C is equal to 1/254.5 per °CIn a dc machine when the number of parallels paths is (a) and the number of poles is (p), thus for lap winding O a p O a = 2 ENGO What is the difference between AC and DC coupling?
- Ip Ep=40 V f = 60 Hz N₂= 20- N₁ = 120 Find the maximum flux om om = Find the magnitude of the induced secondary voltage Es Es = units + Is Es units If the coefficient of coupling (k)= 0.75, determine the magnitude of the induced secondary voltage Es Esk=0.75 = unitsPlease answer this NEATLY, COMPLETELY, and CORRECTLY for an UPVOTE. The coil of a generator has an equivalent resistance of 1.5 ohms at 20 °C. After being used for several hours, the resistance is found to be 1.75 ohms. Determine the temperature of the coils at this time. The temperature coefficient of resistance at 0 °C of the coil is 0.004 OC-1.A toroidal coil, with a circular cross-sectional area of 0.2m2. The coil inductance is 0.28H. The coil has 500 turns. How much current should flow in the coil to get a flux linkage of 498? a. 498.000 A b. 140.000 A c. 1778.571 A d. 249000.000 A e. 889285.714 A