purpose of brushes in a dc machine is__________. to change ac to dc signal to remove the losses in machine to collect voltage from windings avoid spark for current

Q: Give the relevant details for drawing lap winding for a de machine with 4 poles, 22 slots and 6…

A: We need to give relevant details for drawing a lap winding for a dc machine having, Poles (P) = 4…

Q: The dc current in dc machines is supplied to Select one: a. Field windings b. Compensating windings…

A: The dc current in dc machines is supplied to  A. Field windings  B. Compensating windings  C. Stator…

Q: Q2/ A d.c. series motor is running whith a speed of 800 r.p.m. while taking a current of 20 A from…

A: A DC series motor , field winding series with the armature winding.    If Speed N=800rpm drawn…

Q: 4. A three-phase A-connected six-pole winding is installed in 36 slots on a stator. There are 150…

A: Introduction A three-phase delta-connected system is a type of electrical power distribution…

Q: a) Demonstrate input and output waveform of single phase Cyclo-converter such that output frequency…

A: For the given single phase Cyclo-converter For  Vs = 220 V R = 4 ohm Delay angle =  π/3 input and…

Q: Explain very briefly about the flux fringing and their place of occurrences.

A: Whenever the flux is developed within the air gap of the magnetic circuit, then this phenomenon is…

Q: What are the rotating parts on d.c machine. * brushes inter-pole commutator segments O pole shoe

A: In dc machine field winding is statinary and armature winding is rotating.

Q: a)Please explain the connection methods of Current and Voltage Transformers?   b) Control the DC…

A: Solution a)- Connection method of current transformer- It has a primary winding of few turns, or…

Q: 2. A full wave rectifier is using a center tapped step down transformer. The input to the primary of…

A:

Q: A 230 V dc machine has an emf constant and . The field is separately excited and produces 0.01 Wb…

A:

Q: A common dc machine has a total core loss of 6000 W when operating at rated speed and excitation. A…

A:

Q: Which of the following is/are a part a generator's electric circuit? a) the commutator b) the…

A: The explanation is as follows.

Q: Name the principal parts of a rotating electrical machine

A: Any electrical machine has divided into mainly two parts one is stator part and another is rotor…

Q: Determine the voltage drop per brush on a dc machine if the armature current is 150A and its…

A:

Q: 1. A 500 V, 250 kW, long shunt compound generator induces an e.m.f. of 480 V when running at 1000…

A: As per BARTLEBY GUIDELINES, For Multiple Questions, we have to answer only first question. So I…

Q: h a labelled diagram of any DC machine  Discuss it part

A: A self-excited DC shunt motor, also known as a shunt wound DC motor, is a form of self-excited DC…

Q: What is meant by FACTS in power systems? Discuss about STATCOM type FACTS device.

A: Power system - Power system is a network of electrical components that are used to supply,…

Q: A DO shunt generator delivers 45 A at a terminal voltage of 220 V. The armature and the shunt field…

A: Given values are - IL=45AVt=220VRa=0.01ohmRsh=44ohmStray losses=375W

Q: 22   The DC voltage is generated in the Armature winding of DC Generator. Select one: True False

A: DC generator is an electrical machine which will generate DC power. This DC power can be used by all…

Q: A thicker wire is used in the DC series field winding than DC shunt field winding in DC machines. *…

A: current carrying capacity of wire is directly proportional to area of wire. i.e. thicker the wire ,…

Q: I need the complete solution.

A: Step 1: Solution(7) : **(i) Lap Fashion (Winding)**1. Determine the following formula for DC machine…

Q: Draw the developed diagram for the stator winding of a 3-ph, 2-pole 1.M. The winding is double layer…

A: Here,  The stator winding is a double layer with a full pitch coil. The number of slots is 2 per…

Q: 8. The power factor of a single phase load can be calculated if the instrument available are a. one…

A: As per the guidelines of Bartleby we supposed to answer first question only for solution of…

Q: Which of the following machine will have the field winding with low value of resistance. a. DC…

A: Option B is correct. The explanation is provided below.

Q: The field windings of the series motor have a resistance of 120 ohms at 15-degree C. After running…

A:

Q: Mechanical losses represent: A. Windage losses B. None of the other choices are correct O C. Losses…

A: In this answer let us try to understand what are mechanical losses as explained below.

Q: The advantage of . .is that it protects the entire machine from dust and *.dirt. It also provides ..…

A: Each machine contains two separate terminals one is the stator part and the other is the rotor part.…

Q: Difference in lap and wave winding.

A: Difference in lap and wave winding    These types of winding is used in alternator .

Q: A DC machine can run either as a ______ or as a generator.

A: In this answer we will understand what is a machine and the types of a machine and then we will try…

Q: 1. A 500 V, 250 kW, long shunt compound generator induces an e.m.f. of 480 V when running at 1000…

A: Given that: Terminal voltage Vt=250 V Full load armature current Ia=40 A Friction windage loss,…

Q: A dc motor 120 volts has 100 ampere rated current. The allowable voltage drop of 3% of input…

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Q: 1-A d.c. shunt motor is running with certain load. The effect of adding an external resistance field…

A: Since you have posted the questions with multiple subpart so we are supposed to answer 3 subpart.

Q: Harmonics generated in a machine related to the distribution of windings is B**... Answer.

A: Harmonics generated in machine are a distortion of the normal electrical current waveform, generally…

Q: a) How laminated core of electrical machines reduces the iron losses?

A: NOTE :- We’ll answer the first question since the exact one wasn’t specified. Please submit a new…

Q: What is generator in electrical engineering?

A: In this questionWe need to explain about he electric generator.

Q: In all electrical machines, the core is made of iron always in spite of its cost, weight, eddy…

A: In all electric machine, we basically want core to be made of such material that it has high…

Q: a) In an alternator, the armature reaction influences the magnitude of Wave form of generated…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…