V,=120/0 N2 N= 1000 N2= 100 Figure P14.68

Q: A 6-pole armature of a d.c. machine has 776 conductors and a flux per pole of 35 mWb. Determine the…

A: Choose the correct option Emf voltage of the DC Generator for LAP winding We know Emf E=…

Q: Example with 778 wave-connected armature conductors and run- ning at 500 rp.m. supplies a lood of…

A: Since there are multiple questions uploaded so solving the first question accordingly as per the…

Q: What Is CNC Machining? How does it work?

A: CNC Machining  It is basically a metal fabrication method where a pre-written code is utilized to…

Q: Discuss the following terms               (i) Double Revolving Theory               (ii) Lap…

A: As per our policy i have attempted first three sub-parts. (i) The double-revolving field theory of a…

Q: What characteristic is desirable in the B–H curve for a prospective material to be used in a…

A: In permanent magnet, the magnetic material in which the magnetic dipoles are already oriented in a…

Q: The external characteristic of a shunt general can be obtained directly from its characteristic. (a)…

A: 1) Open - circuit  the external characteristics of a shunt generator can be obtained directly from…

Q: a. How does the relative permeability of a ferromagnetic material vary with magnetomotive force? b.…

A: Therefore, magnetomotive force is inversely proportional to relative permeability.

Q: An 8 pole, lap connected armature has 500 conductors and its generated e.m.f is 120V. If the flux…

A: Given: A dc machine in which P=8A=P=8Z=500E=120Vϕ=20mWb According to question: The speed of the…

Q: . What are the various losses in an induction motor? On what factors do they depend

A: The fallowing are the various losses that occur in an induction motor:

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: Explain the following Armature Winding Terminologies (i) Coil Span (ii) Resultant Pitch

A: In the following section, coil span and resultant pitch related to armature winding technology has…

Q: he magnetization curve of a DC machine is linear. True or False

A: The explanation is as follws.

Q: There are 4 different coils on the each gears in the magnetic system below. All of these coils are…

A:

Q: Q2) In DC machine, the speed is 800 RPM, the flux per pole is 2 m wb, and it has a Lap winding…

A: Given: In a DC machine Speed, The flux per pole, It has Lap winding (means the number of parallel…

Q: The armature of a dc motor has 648 conductors, 65 % of which are directly under the pole where the…

A: Given :No. of conductors, Z=64865 % of conductors are directly under the pole Flux density, ϕ=48,000…

Q: the armature mmf can be -2 reduced by reluctance of the magnetic the circuit in the region of the…

A: The explanation is as follows.

Q: In alternator armature winding why we prefer : a- short pitch winding w.r.t. full pitch winding? b-…

A: (a) Short pitched coils are preferred over full pitch coil because : It eliminates high-order…

Q: Determine the power output of a DC armature having 1152 lap connected conductors carrying 150 A and…

A:

Q: Q2) put ( v) or (x) for the following and correct the wrong : 1-the connection Delta-Delta is the…

A: As per the guidelines given, We can only provide the solution of the first three questions in…

Q: A single-phase 111-V, 50-Hz supply is connected to a coil with 200 turns of a coil-core assembly as…

A: Given, Single phase transformer. Single phase supply voltage, e=111 V. Frequency, f=50 Hz. Number…

Q: The stator MMF(magnetomotive force) is not taken into calculation in this circuit. Only magnet…

A: Magnetic circuits are analysis to electrical circuits.Hence source transform can be appliead to…

Q: Explain the following armature winding terminologies (i)commutator Pitch (ii)Coil Side (iii)Pole…

A: The given armature winding terminologies: (i)commutator Pitch (ii)Coil Side (iii)Pole Pitch

Q: What type of Power Losses does windage loss, bearing and brush friction loss is considered? a Stray…

A: Copper losses are losses due flow of current in winding. Copper loss in DC machine occurs in both…

Q: (a) For a P pole machine, derive the total flux per pole.

A:

Q: The example of electric ciruit of machine parts is a. Armature core b. Field poles c. commutator d.…

A: The yoke is external structure for machine. The function of Pole is to hold the field Windings.…

Q: Consider a toroidal core, as shown in Figure 14.11 on page 709, that has a relative permeability of…

A: According to question:  Magnetomotive Force…

Q: Q9 / What are the function of brushes , pole and commutator in DC machine

A:

Q: - In alternator armature winding why we prefer : a- short pitch winding w.r.t. full pitch winding?…

A: a) Short pitch prefer because in order to eliminate higher frequency harmonics in generated…

Q: 4-pole direct current electric machine works as a generator. In this direct current machine, which…

A:

Q: In alternator armature winding why we prefer: a- short pitch winding w.r.t. full pitch winding? b-…

A: 1. Short pitch winding is used w.r.t full pitch winding in the alternator. Short pitch winding is…

Q: In DC Shunt generator, the armature winding and field winding are connected in series Select one: O…

A: 1) In DC shunt generator the armature winding and field winding are connected in parallel while in…

Q: What happens to the reluctance of a magnetic path if its length is doubled? If the crosssectional…

A: The formula for Reluctance is: R=lμAWhere,R=Reluctancel=Length of the magnetic pathA=Cross section…

Q: The 4-pole direct current electric machine works as a motor. In this direct current machine, which…

A: The direction of flux at the main pole: The direction of the flux at the main poles is the same as…

Q: TUTORIAL PROBLEMS LA4gele shunt gmerstor widh wave-wound armature has 41 alots,, ech having 12…

A: As per guidelines we are supposed to solve only first question if multiple questions are asked by…

Q: How are eddy current losses affected by the frequency and density of the flux wave?

A:

Q: In DC machines, ....................... are made from laminated steel or low carbon steel and used…

A: In DC machines, Armature is made from laminated steel or low carbon steel and used to reduce the…

Q: An 8-pole d.c. shunt generator with 778 wave-connected armature conductors and running at 500r.p.m.…

A:

Q: Answer the following a. How does the relative permeability of a ferromagnetic material vary with…

A: (A): In empty, or free, space the magnetic flux density is the same as the magnetizing field because…

Q: How to reduce the effect of armature reaction? a.   Increase the length of the air gap   b. using…

A: In this question , we will see how we reduce the effect of armature reaction...

Q: a. Sketch the magnetization-temperature graph of a material. b. A mass of 1000Okg transformer is…

A: a) material type is not mentioned in the question. We have drawn plot for Paramagnetic,…

Q: Q9. What is the basic principle that a cage winding can be represented by a three-phase winding?…

A:

Q: A 4 pole armature of a DC machine has 175 conductors and a flux per pole of 0.1 wb. Find the EMF…

A: P=4Z=175ϕ=0.1 wbN=600A=P (lap wound)

Q: Answer the following: a. What happens to the magnetic field produced by the electromagnet if some…

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

Q: A dc machine has 4-pole, wave wound armature with 46 slots and 16 conductors per slot. If induced…

A:

Q: Develop a simple Lap Windings for DC MACHINE. Provide a winding table Given: 4 Pole, Pole Pitch=9,…

A: There are various types of winding- Simplex  Duplex Triplex These are categorized in Lap winding…

Q: In DC machines, are made from laminated steel or low carbon steel and used to reduce the armature…

A: Armature reaction is the shift (rotation) of the neutral plane of the dc machine stator magnetic…

Q: Design a winding diagram given the following specifications. Simplex Lap Progressive Winding No. of…

A: We need to design a simplex lap progressive winding for the following configuration: number of poles…

Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.