Explain the DC Machine losses in briefly.
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A: The explanation is as follows.
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Q: What is Commutation in DC Machines? What are the methods you will suggest to improve the commutation…
A: Commutation in DC machine and it's way to improve
Q: Q4/ Define the armature reaction, at no load what is the armature reaction value and how to reduce…
A: The explanation is as follows.
Q: Discuss the advantages of flux weakening operating regime in a DC motor.
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Q: Explain the DC Machine losses in briefly.
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A: A chopper is a power electronic device which is basically a dc to dc converter. It is a device which…
Q: Explain the term armature reaction in DC machines
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Q: (a) Deduce the equation for the emf induced in a dc machine. (b) Explain why a dc motor should not…
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Q: 1) Derive the transfer function of Amature controlled DC shunt motor
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Q: Name the major parts of a DC motor
A: DC motor is a device which converts electrical energy into the mechanical energy. The major parts of…
Q: (a) Describe two main differences between a DC shunt-wound and separately-excited motor.
A: I am giving difference between shunt motor and separately excited motor.
Q: Asiacell In the experiment of finding the parameters of synchronous machine, the ac value of the…
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Q: 6.8 in which mode of operation of a dc machine does the interpole have the polarity of the main pole…
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A: NOTE- As per the rules we can answer only 3 sub-parts, please post the remaining sub-parts as the…
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Q: Q5/ in a DC motor. List and describe the types of losses that occur
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Q: The relationship between field current and induced armature voltage is known as open circuit…
A: Given The relationship between field current and induced armature voltage is known as open circuit…
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Q: Plot the external and internal characteristics of DC shunt generator.
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Q: Complete the blank Commutator in DC machine is made up of .....................................?
A: The commutator is the device used with the rotor in electrical machines to ensure that current at…
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- Two shunt generations each having an armature resistance of 0.05 ohm and fieldresistance 40 ohms respectively are connected in parallel. The e.m.f include inone machine is 250 V and that induced in the other machine is 260 V. they supplytogether a load current of 2000 A. Determine the Output of each machine.[4] The half wave ac controller has rms output voltage equal to input rms Vs at.......... (5] In single phase bidirectional ac controller, the RMS output voltage can be varied between zero to.............. of input voltageplease write a characteristic table showing the advantages and disadvantages of the application of all excitation dc machines. will give like!!!
- Two shunt generations each having an armature resistance of 0.05 ohm and field resistance 40 ohms respectively are connected in parallel. The e.m.f include in one machine is 250 V and that induced in the other machine is 260 V. they supply together a load current of 2000 A. Determine:(i) Terminal voltage; and(ii) Output of each machine.Topic: Efficiency and Testing of DC machines See the image sttached.1) P.f of inductive load is corrected by connecting . . across it. .... ...... 2) Open circuit test measures . losses. 3) The output variables of a motor are and ........ ... .... 4) For a motor output power is given by ...... 5) Flux control, voltage control, and armature control are three methods for ....... of dc motor. 6) A transformer takes 100V at primary and gives 50V at secondary, its turn ratio equals 7) The given set of equations represents . . Ea – laRa = Vr , la = IL , %3D Rf 8) The given set of equations represents. la = !, + IL, VT Rf Ea – laRa = Vr , 9) The given set of equations represents . Ea – laRa – IseRse = Vr, la = Ise = l, %3D | 10). .. has more initial torque than shunt dc motor.
- At loaded condition, the effect of armature reaction is more in DC machines. Select one: O True FalseQ5. Two shunt generators operate in parallel to supply a total load current of 200A. Each machine has an armature resistance of 0.52 and a field resistance of 1002. If the generated EMFS are 200V and 210V respectively. Determine: I- Draw the circuit setup and determine the load voltage and load power II- Find the armature current of each machine and the power supplied.A thicker wire is used in the DC series field winding than DC shunt field winding in DC machines. * O because it carries the load current. O to prevent mechanical vibrations. O to provide strength. O to produce large flux. The speed of a DC motor can be changed by varying - armature resistance circuit O flux per pole O voltage source O all of above
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