a spinning industry, a 220 V, 6 pole shunt motor runs at a speed of 1250 rpm gives an output of 8 HP with an armature current of 46 A. The armature winding is wave- connected and it has 590 conductors. Its armature resistance is 0.2 Q and drop at each brush is 1 V. Find (i) Useful torque (ii) Total torque (iii) Useful flux per pole (iv) Rotational losses occurring in the motor. [ 1HP

Q: armature winding of a 4 pole, wave-wound, dc machine having 728 active conductors and running at…

A:

Q: An eight-pole, 24 KW, 124 V, DC machine has a duplex LAP-wound armature which has 72 coils with 6…

A: No. Of poles, P = 8 No. Of parallel paths, A = 2*8 Conductors, Z = 72*6*2 Voltage, E = 124V Speed, N…

Q: A dc generator has a field flux of 0.001 Wb and 4 poles. The machine operates with at shaft speed of…

A:

Q: 4-pole, wave-wound armature has 72 slots with two coil-sides per slot, each coil has four turns. If…

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: DC series motor

A: For the DC series motor, Ise=Ia =Ia   Flux, conductor, poles, armature resistance values given in…

Q: An induction motor has a full load slip of 0.04. It's starting current 5 times its full load…

A:

Q: In a PMMC, analyze the changes in deflection torque produced with Increments in flux per pole. Oa…

A: In PMMC analysis, the change in the deflection torque produce with increment in the flux per pole,…

Q: A dc generator is run at 500 rpm. The eddy current losses and hysteresis losses are found to be 100…

A:

Q: A 22 kW, 230 V Series DC motor runs at 750 rev/min at full load and draws 110 A from the supply. The…

A:

Q: A 10 pole lap wound DC armature has a total of 200 conductors each with a current carrying capacity…

A: Given values are - Lap windingNumber of polesP=10Number of conductorsZ=200Current…

Q: 8. Find the counter-EMF voltage of a permanent magnet DC motor when it runs at 2080 rpm. The…

A: The solution is given below

Q: Increasing the frequency of the supply :will .Decrease the rotor speed at a certain load torqueO…

A:

Q: The machine shown in Figure 2 has three concentrated stator coils, each of eight turns. The coils…

A:

Q: A 220 V permanent magnets DC motor has an armature resistance of 0.502. If the full load armature…

A: Given data, Terminal voltage V = 220 V. Armature resistance Ra=0.5 Ω. Armature current Ia=20 A.

Q: An 8-pole lap-connected armature has 40 slots with 12 conductors per slot generating a voltage of…

A: The voltage supplied to the motor by an external power source is known as EMF or electromotive…

Q: A 220V, four pole, wave wound DC series motor has 1000 conductors on its armature. It has armature…

A: DC machines (Generator/ Motor) are the important parts of electrical drives. These machines are used…

Q: .A 230 V dc series motor has Ra=0.22, Rf=0.12. The motor draw 40A at rated speed and 1000 RPM. Find…

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: An eight-pole, 24 KW, 124 V, DC machine has a duplex LAP-wound armature which has 72 coils with 16…

A:

Q: $2 8 cm to Nj=200 sarım 16 cm N2=500 sanm 8 cm 16 cm -8 cm 16 cm -8 cm -8 cm Derinlik = 8 cm st

A: Mean path of the flux is shown as follows-

Q: A dc generator has a prime mover that provides a speed of 1772 rpm at a torque of 24.4 N-m. With…

A:

Q: The factors effecting the speed of dc motor are The flux p and the voltage across the armature The…

A: The factor affecting the speed of the dc motor is as follows; N=V-Ia RaϕN= speed of dc…

Q: A 250 V series motor has an armature resistance of 0.2 ohm and a series-field resistance of 0.18…

A:

Q: Q.36 Name three factors that determine the torque produced by an induction motor. Select one or…

A: Those  three factors are following in which torque depends upon:- i) the magnitude of rotor current.…

Q: Determine the magnetic flux (per pole) in a 100-V, 780 watts, PM motor operating at a speed of 1500…

A:

Q: A dc generator has a prime mover that provides a speed of 1568 rpm at a torque of 22.6 N-m. With…

A:

Q: armature winding of a 200-V, 4-pole, series motor is lap-connected. There are 280 slots and each…

A: We need to find out speed for given motor

Q: A dc machine has hysteresis loss of 300 W and an eddy current loss of 200 W when running at 1200…

A: Hysteresis loss Wh=300 W eddy current loss We=200 W The speed is N=1200 rpm Total core loss…

Q: The voltage induced by a 6-pole DC generator running at 600 [RPM] with 100 slots on the armature and…

A: Given,  A DC generator has,  Number of poles,  p = 6  Speed of rotor,  N = 600 rpm  Flux per pole =…

Q: The flux o in a 16 KW, 100 V, Duplex Lap-Wound DC machine has been set to induce rated voltage at a…

A: Given Power,p = 16 KW, Voltage,V = 100 V, Duplex Lap-Wound DC machine has been set to induce rated…

Q: An 8-pole DC machine has a simplex wave-wound armature containing 200 coils of 10 turns each. The…

A: First calculate resistance of each path and then find total armature resistance.  For wave wound no…

Q: At certain instant, the angle (Өe) of the rotor flux vector is 60° .The output signals ids and iqs…

A: The angle of the rotor flux vector is 60°.  iDS = 20A iQS = 40A Using the inverse DQ -> dq…

Q: A 900 rpm, 4 pole wave wound shunt motor takes 300 A. The flux per pole is 0.02 Wb and the armature…

A: back emf = Flux×speed×armature conductors60×No. of polesNo. of parallel paths. power developed in…

Motor Load, Torque, and Power Quality Requirement

An electric motor is a gadget that changes electrical energy into mechanical energy over to follow up on a mechanical burden. The weight set on the motor because of this mechanical movement is known as motor load. Appropriately matching the motor burden to the engine is vital to forestall harm to the engine or wasteful and unnecessary expensive activity. Engines perform such undertakings as moving a thing starting with one spot then onto the next, cutting it, changing its shape, etc. The motors might be evaluated as far as a few variables including power yield, voltage, current, and temperature. Harm to an engine might happen when it is worked under over the top engine load contrasted with its appraised limit.