A 15-hp, 230 V single-phase synchronous motor is taking a current of 50 A at a power factor of 0.85 leading. Effective armature resistance is 0.2 ohm if this motor drives a mechanical load of 12 hp, determine its rotational losses.

Q: Determine developed torque and shaft torque of 300-V, 4-pole series motor with 680 conductors wave-…

A: It is given that: V=300 VP=4 polesZ=680 conductorsWave-connected=A=2Pout=8 KW=8×103 WIa=40 Aϕ=25…

Q: 3Electromechanics

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Q: discuss how the dc motor is used in washing machine

A: The answer as given below:

Q: A 440-V shunt motor has armature resistance of 0.9 Q and filed resistance of 1800. Determine the…

A: Given, A shunt motor has, Terminal voltage, V=440 V Armature resistance, Ra=0.9 Ω Field resistance,…

Q: A 250 V dc shunt motor has an armature resistance of 0.2 Ω and a field resistance of 100 Ω. When the…

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Q: Find the starting current (in Ampere) of 146 V DC series motor if the armature resistance = 0.6 ohm…

A: armature current of DC series motor=(terminal voltage -back emf)armature resistance+ series field…

Q: OV DC series motor takes the line current of 30 A and runs at 750 rg d if torque is increased to 50…

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Q: 1-7. A 208-V, two-pole, 60-Hz, Y-connected wound-rotor induction motor is rated at I5 hp. Its…

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

Q: A 145 -V shunt motor has an armature and shunt field resistances of 0.38 and 182 Ohms respectively.…

A: It is given that: Vt=145 VRa=0.38 ΩRsh=182 ΩIL=26 AProt=822 WVb=2.06 V

Q: A transformer having a nominal voltage = 399V and a no load voltage = 420V at its secondary, the…

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Q: A Step-down transformer is given and calculate 5:1 120 V 60 Hz V2 1 k? i. Peak load and D.C. load…

A: Since it is a step down transformer therefore V2<V1 and number of turns in primary will be…

Q: A small series-wound dc motor is operated from a 12-V car battery. Under a normal load, the motor…

A: The circuit diagram for the series motor is given as  now according to the first condition , under…

Q: 7-18. A 208-V, 60 Hz six-pole, Y-connected, 25-hp design class B induction motor is tested in the…

A: Asked to find the equivalent circuit of class B induction  motor.Plot the Torque-speed…

Q: A 230-volt series motor has an armature resistance of 0.32 ohm and a series-field resistance of 0.16…

A: Given: V=230 VRa=0.32 ΩN=500 rpmIa=32 A

Q: A 500 V shunt motor has an armature resistance of 0.3 Ω and field resistance 0f 250 Ω. Determine the…

A: Given

Q: A 440-V shunt motor has armature resistance of 0.9 and filed resistance of 180 Q. Determine the back…

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Q: A d.c. shunt motor is running with certain load. For constant torque, the effect of adding an…

A: As per the guidelines of Bartleby we supposed to answer 1st question only since the 2nd question is…

Q: (1) What is the armature current IA for EA= (A-10)V (2) What is new value of EAnew, at C/5 percent…

A: RA=0.25Ω ;VT=A=436 V ;EA1=A-10=426V ;1 IA1=?  for  EA=A-10 C=7, ∴C/5=7/5=1.4% decrease ∴ϕ2=0.986ϕ1 2…

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: Explain the construction of AC serve motor, also draw its diagram.

A: Construction AC servo engines are fundamentally two-stage squirrel confine acceptance engines and…

Q: A 480 Volts, 60OHZ, 50HP, three-phase induction motor is drawing 50 Amperes at 0.85 power factor…

A: Efficiency: It is the ratio of the output power of the motor to the input-output power of the motor.…

Q: A 220 V shunt motor takes a total current of 50 A. If the field winding resistance is 80Ω and the…

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Q: A universal motor has a total resistance of 30 and a total inductance of 0.5 H. When connected to a…

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Q: As shown in the figure below, this is a speed regulation method for DC separately excited notor. 1)…

A: given figure is that a speed regulation method for DC separately excited motor: a)  to explain about…

Q: 500 V shunt motor has an armature resistance of 0.3 Q and field resistance Of 250 Q. Determine the…

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Q: Problem 2 A 3-phase 2-pole induction motor is rated 190 V, 60 Hz, it is connected in Y, and has R2 =…

A: It is given that:P=2V=190VR2=6.6Ω,R1=3.1ΩXm=190Ω,X2=10Ω,X1=3Ω

Q: Am 11 KV /33 KV 220 MVA, 60 Hz transformer is wooded at sy. with resistive to ad Ratio 21 KW at…

A: In this question we need to find a copper loss at 50% and 75% loading

Q: A series DC motor has a series-field winding of 25 turns per pole. Its armature resistance is 0.15…

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Q: A 250 V DC series motor takes 40 A and runs at 1000 RPM. Find the speed at which it runs if its…

A: The back emf of the given DC series motor is,  Eb1=V-Ia1Rf+RaV=250 VoltsRf=0.25 ΩRa=0.25 ΩIa1=40…

Q: 240-V, 50 Hz, 2pole, 4HP three phase Induction Motor is drawing 10A at 0.9 PF lagging runs at a…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: A synchronous, three-phase motor, connected in Y, with a frequency of 60Hz, 2300V, has a synchronous…

A: It is given that: frequency,  synchronous reactance, efficiency,  The power factor angle=15…

Q: A 220 V shunt motor has an armature resistance of 0.4 ohm and field resistance of 140 ohm. The motor…

A: We have an shunt motor which is having, Voltage (V) = 220 V Armature resistance (Ra) = 0.4 Ω Field…

Q: The overall efficiency of a 4-pole DC  motor is 83.5% when running at a speed of 550 rpm. The motor…

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Q: A 230 V shunt motor takes a total current of 25 A. If the field winding resistance is 100 Q and the…

A: Given: A shunt motor having, V=230 VI=25 ARsh=100 ΩRa=0.3 Ω

Q: The current drawn by 220 V dc shunt motor of armature resistance 0.5 ohm and back emf 200 V is

A: Given, A DC shunt motor having Supply voltage, V=220 V Armature resistance, Ra=0.5 Ω Back emf,…

Q: 459. The current drawn by a 460 V dc motor of armature resistance 0.5 ohm and back emf 420 V in

A: Given a dc motor with, Input voltage, V = 460 V. Armature resistance, Ra = 0.5 ohm. Back emf, Eb =…

Single Phase Induction Motor

The single-phase induction motor or engine consists of a single rotating phase in the stator and a rotating cage in the rotor. When phase one supply is connected to the stator winding, a magnetic field is generated. In the pulsating field, the rotor does not rotate due to inertia. So, a single-phase import motor does not start and requires some initial methods.