5. A four pole, 60 Hz, 230 V induction motor has the equivalent circuit shown below. Its rated speed is 1725 RPM. V an 0.62 j3 2 www a) Find its rated slip. b) Find the output power P c) Find the output torque Te mech mech j5 Q2 j25 Ω at rated conditions. at rated conditions. 0.35 Ω

Q: A 250-V, 100-A DC motor which has both shunt and series windings. Its characteristics are RA = 0.14…

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Q: Question 2. Considering this figure. The firing angle is 45°, the motor current is 10 A, and the…

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Q: 3Electromechanics

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Q: 8T A 4-pole, single-phase, squirrel-cage induction motor operates from a 115V, 50 Hz supply. The…

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A: Open-type split phase motor has a centrifugal switch that operates when the motor reaches 75% of the…

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A: We need to find out effeciency and rotor speed .

Q: A three phase 50HZ induction motor has 6 poles. If the full load slip is 3 %. determine the rotor…

A: 1st we will find out synchronous speed then we will calculate rotor speed . We will also calculate…

Q: The Frequency of rotor eut of an 8-pole induction motor in 2HZ. If the Supply frego is 50 Hz, then…

A: The given data is shown below:

Q: series motor runs at (800 r.p.m) when the voltage is (400 V A). The armature resistance is (0.4 Q)…

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Q: The excitation circuit of a free-excited DC motor is a single-phase full- * wave uncontrolled…

A: Dear student as per our guidelines we are supposed to solve only one question in which it should be…

Q: A 3-phase, 2200-V, delta-connected, 12-pole 60-Hz induction motor runs at no load with rated voltage…

A:

Q: A 48kW, 600V, 1500 rpm separately excited de motor is controlled by single phase semi-controlled…

A: Armature resistance (Ra) = 1 Ω         Field resistance (Rf) = 145 Ω        Firing angle of…

Q: A three-phase induction motor with 72 stator windings is excited with a 50 Hz AC voltage source. The…

A: Given: A 3-phase induction motor has 72 stator windings. Excitation frequency, f=50 Hz Slip,…

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

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Q: Q1:If the power factor of an induction motor is measured at 0.8±5%. Calculate the limiting error and…

A: Measurement- It is process to comparison between standard and unknown and the magnitude of resulting…

Q: (d) The rotor frequency (e) The stator copper losses PSCL (f) The air-gap power PAG (g) The power…

A:

Q: An induction motor of 10 kW rated mechanical power and an overall efficiency of 80%. The rotational…

A: An induction motor 10kW rated mechanical power and an overall efficiency of 80% .  The rotational…

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A: The relationship between Horse power ( HP ) and Watts is 1Hp = 735W                        = 0.735kW

Q: A 6-pole. 50-Hz 3-ϕ induction motor is running at 950 rpm and has rotor loss of 5 kW. Its rotor…

A: Thank you Reference,Concept and some relevant examples:

Q: Draw Block diagram and transfer function of DC series motors

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Q: For 4 pole induction motor a ņ 1₁ = √₂² = 0.252 1X₁ =gX₂ =g8 Vel = 480 v Find S Find Smax Find 3…

A: It is given that: p=4r1=r2'=0.2 ΩX1=X2'=8 ΩNm=Nr=1775 rpmVL=480 VAssuming f=60 Hz

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A: The relationship between supply frequency and rotor frequency is given as Fr=S*F Where Fr= Rotor…

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A: Efficiency = output power/ input power. Total losses = cupper loss + rotational losses.

Q: A 100 V DC separately excited motor has armature resistance 2 ohms and voltage constant of 0.6 V…

A: V = 100 V Ra = 2 ohm Kb= 0.6 V/rad/s T= 20 Nm Kt = 50 Nm/s

Q: The dc motor has maximum current at start because: O The back emf is maximum. OThe back emf is zero.

A: here we have to find why the dc motor has maximum current at the start.

Q: Induction motor Select one: O a isused in limited applications O b. is doubly fed motor since it…

A: Option c is correct. The detailed explanation is provided below.

Q: A 4 pole, 300 V Series Wound  DC Motor developing 25 HP and 81.57 N-m torque runs at a speed of 750…

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Q: A three-phase, star-connected, 7460 KW, 6000V, 50 Hz synchronous motor has a power factor of 0.8,…

A: The  rated output power of the motor will be, Psh=7460 KW The supply voltage, V=6000 V The supply…

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

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Q: Speed control of a 140 V, 1.68 kW DC motor single phase thyristor full wave AC-DC

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DC Series Motors

A DC motor is a type of electric motor which converts electric energy into mechanical energy. The forces that are produced by the magnetic field are what those common types of motors rely upon. Either electro-mechanical or electronic, all types of DC motors have some internal mechanism to change the current direction in part of the DC motors. As the DC motors could be powered from existing DC lighting power distribution systems, these motors were the first form of motors widely used. By changing the strength of the current in its field winding or by using a variable supply voltage, the speed of the DC motors can be controlled over a wide range.