B field directed into page х х х RA VT Rails хх Sliding bar Figure 15.6 хох

Q: Discuss the advantages and disadvantages of magnetohydrodynamic energy conversion

A: Advantages of magneto hydrodynamic energy conversion.  It converts heat energy directly into…

Q: Construct a Coil Winding (Armature winding) detailed, with these following descriptions.... 4…

A:

Q: Consider the linear dc machine shown in Figure 15.6 on page 754. What happens to the initial force…

A: The force equation for a current carrying conductor inside a magnetic field is: Where, The magnetic…

Q: A short-shunt compound generator delivers a load current of 30 A at 220 V, and has armature,…

A:

Q: A 24 KW, 140 V, Duplex Lap-Wound DC machine has been set to induce rated voltage at a constant K…

A:

Q: The open circuit characteristics of dc machines is the relation between. O Torque and speed at…

A: Given data, Asking Open circuit characteristics of dc machine.

Q: Q6 a d.c. shunt machine while running as generator develops a voltage 250 V at 100 r.p.m. at…

A: In this question,   We need to determine the speed and efficiency of the generator

Q: A DC motor is initially at rest and is then connected to a 12V battery. The motor has aresistance of…

A: The objective of the question is to determine the current through the motor as a function of time,…

Q: An autotransformer is shown in Figure P14.68. Assume that all of the flux links all of the turns and…

A:

Q: A 24 KW, 140 V, Duplex LAP-wound DC machine has been set to induce rated voltage at a speed of 2200…

A:

Q: c. Explain the construction and working of permanent magnet DC moto

A: Construction -: PMDC motor consist of 2 parts. 1)  stator & 2) armature. Stator is a steels…

Q: 7- An 8-pole d.c. machine of 1200kW, 600V, 500 rpm and the average value of the reactance voltage…

A:

Q: A 4-pole short shunt wave-wound generator supplies 30kW at a te rminal voltage of 600V. the armature…

A:

Q: DC machine with 2 poles, wave winded (retrogressive) (two layers) with 18 slots, the values of pole…

A:

Q: In a D.C machine, running at 450 rpm the hysteresis and eddy current losses are 300W and 150W…

A:

Q: What is commutation in DC Machine? What are the methods you will suggest to improve the commutation…

A: The explanation is as follows.

Q: 2)The maxinium at load angles of.... 3)The primary winding of a 220/6 V, 50 Hz transformer is…

A:

Q: The difference in salient- and non-salient pole machines is that salient pole machines have…

A: The question is about difference between salient and non-salient pole machine.

Q: A 220 V, 60 Hz, supply is connected to 200-turn armature winding of reluctance 1.7×10 At/Wb. Find…

A: Given  No of turns ,reluctance of an armature winding  connected to a AC supply. We need to…

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: A 500 A/5 A, 50 Hz current transformer has a bar primary. The secondary burden is a pure resistance…

A: Given- 500 A/5A, 50 Hz,R=1 Ω,i=5 A, 250 AT required for magnetization. To Find- % ratio error.

Q: A 250 V DC shunt generator has a constant loss of 1250 W. Find the load current for maximum…

A: Solution: Shunt generator; V=250 v, Constant loss =1250 W, Find the load current for maximum…

Q: Describe the Characteristics, characteristics, efficiency calculations, their applications Of DC…

A:

Q: An eight-pole, 24 KW, 100 V, DC machine has a duplex LAP-wound armature which has 64 coils with 10…

A:

Q: A 24 KW, 140 V, Duplex Lap-Wound DC machine has been set to induce rated voltage at a constant K…

A:

Q: The following figure shows a simplified endivi and inductor for a dc motor. The inductor has an…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: Q6. A 4-pole wave-wound armature rotating at 400 rpm is required to generate 300 V. The effective…

A: EMF equation of DC generator is given by Eg=∅×N×Z60×pA where  ∅ is the flux per pole.              Z…

Q: A 1000rpm DC shunt generator is supplying 100 lamps of 60W at 230V, the armature and field…

A: Given data: N=1000 rpm 100 lamps, P=60W, V=230V  Ra=0.2 ohm Rf=115 ohm

Q: Explain the Construction and Applications of DC Machines.

A: Construction of a DC machine: The DC machine consists of two main parts: Stator and Rotor 1. Yoke:…

Q: ,A 8-pole, separately excited, lap wound DC machine has armature resistance of 0.1 2 runs at speed…

A: This is DC separately excited DC Generator Find the efficiency  If winding is LAP If winding is…

Q: Derive the EMF and Torque equations of DC machines from the first principles.

A: The E.M.F equation of the DC machine is to be derived using the operating principle. Let us consider…

Q: A DC, separately excited motor is used to drive a constant-torque load. The field circuit is excited…

A: DC Motor: DC Motor is an electromechanical device which converts electrical energy to mechanical…

Q: The armature of a d.c. The machine has a resistance of 0.25 ohm and is connected to a 300V supply.…

A: The back emf is modeled as an opposing variable emf to the emf powering the motor. When the motor is…

Q: 32. An alternator requires an alternating current of 2.1 A to produce on short circuit its full-load…

A:

Q: QUESTION 1 a) Write down three (3) factors that will determine the induced torque in a DC machine.…

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

Winding and Constructions

Alternating Current (AC) winding is generally of the 3-phase type due to the inherent advantages of the 3-phase machine. Armature coils must be connected to the yield balance (equivalent in magnitude and 2/3 of the series phase difference of the rod) 3-phase electromotive forces (emf). The armature should be divided into step-bands to start with slots around the perimeter.In the construction of AC machines, the frame is used as an external protective shield to protect it from environmental conditions. The frame also serves as the outer perimeter, allowing the interior to be easily placed. The static state section of the devices is the stator winding attached stator.