What will be the operating power factor of a 3-phase induction motor, whose ratings are 230 V, 50 Hz, 120 hp, and 4-poles? Motor is operating at rated conditions with an efficiency of 92% and draws a line current of 260 A. The core loss and stator copper losses are 1710 W and 2830 W respectively. (a) 0.85 (c) 0.93 (b) 0.90 (d) 0.80

Q: Lesson: Electric Machines A three-phase star connected 380V, 10Hp, 60Hz, 1755 d/d and four-pole…

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Q: Example -4. A three-phase. 60-Hz induction motor runs at 890 r/min at no load and at 840 r/min at…

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Q: A 240 V, 60 Hz, Delta connected, 870 r.p.m., Eight poles, Three-Phase Induction Motor has the…

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Q: A three-phase 3.7 kW/5 hp, 1420 rpm, delta connected squirrel cage induction motor is used to drive…

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Q: a) The figure below shows the per-phase equivalent circuit of a two- pole three-phase induction…

A: The solution is provided in the step.

Q: ) In a Crusher application, a 480-V, 60 Hz, 2pole, three phase Induction Motor is drawing 60A at…

A: As mentioned in the question to solve a,b and c. the solution is mentioned below.  The given data of…

Q: Q1) A 460-V, 25-hp, 60-Hz, four-pole, Y-connected induction motor has the following impedances ohms…

A: In this question we will find input current and efficiency of given induction motor.... Note:- as…

Q: The stator resistance of a 1-phase induction motor is 2.5 ohms  and its leakage reactance is 2.0…

A: In this question,   We need to determine the equivalent circuit parameters?

Q: -Phase 50Hz 6 pole induction motor has rotor resistance of 0.1 ohm and reactance of 0.92. ignore…

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Q: The total losses of 3-phase induction motor at 4A armature current and 1.142 rotor external…

A: The solution can be achieved as follows.

Q: Q18. What will be the operating power factor of a 3-phase induction motor, whose ratings are 230 V,…

A: In this question we need to find a operating power factor of a 3 phase induction motor

Q: The result of no-load test on a 3-phase Y-connected induction motor are as follows: line to line…

A: According to the question we have to calculate the value of, a. resistance per phase representing…

Q: 4.3 The power supplied to a three phase induction motor is 32 kw and the stator losses are 1200 W.…

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Q: of 0,0242 per phase and standstill etermine the speed at which maximum torque is developed. Ans[1440…

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Q: A 75 kW asynchronous motor with a three-phase Y connected synchronous speed of 1800 rpm is fed from…

A: Given :Synchronous speed, NS=1800 rpmV=600 VIL=78 APT=70 kWRotor rotation speed, N=1763 rpmStator…

Q: The power input to the rotor of a three-phase induction motor is 33.2 kW. If the slip is 5% and the…

A: In the question The power input to the rotor of a three-phase induction motor Pg= 33.2 kW. If the…

Q: A 460 V, 60 Hz, Star connected, 870 r.p.m., Eight poles, Three-Phase Induction Motor has the…

A: As per our guide lines I solved only 3 sub parts

Q: H.W 2: A 240 V, 60 Hz, Delta connected, 870 r.p.m., Eight poles, Three-Phase Induction Motor has the…

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Q: A 480-V, 60 Hz, 50-hp, three-phase induction motor is drawing 60A at 0.85 PF lagging. The stator…

A: The input power of the induction motor is given by the expression,  Pin=3VLILcosϕ Plugging the known…

Q: The maximum torque of 3-phase induction motor occurs at a slip of 11 percent. The motor has an…

A: Given,R2'=0.08Ω/phasesm=11%=0.11sm- max. slip of motor at max. torque condition Here,R1- resistance…

Q: H.W 1: A 380 V, 60 Hz, Star connected, 870 r.p.m., Eight poles, Three-Phase Induction Motor has the…

A: Star connected 3 phase induction motor 8 pole, 380V line to line voltage, 60Hz frequency The motor…

Q: Find the line current, shaft speed, load torque, induced torque and rotor frequency of an induction…

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Q: A split phase induction motor is rated at 0.25 hp ,1725 rpm ,120 V ,60 Hz, when the rotor is locked…

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Q: An induction motor draws 50 A from a 450 V, three-phase line at a lagging power factor of 0.75. Its…

A: Given, Stator input current(IL) = 50 A Stator input voltage (VL) = 450 V Input power factor = 0.75…

Q: Question 5 A 3-phase squirrel-cage induction motor is drawing 45 kW from a 440-V, 60 Hz 3-phase line…

A: The input power drawn by the motor has been given as 45kW. The slip is 0.03,the input power to rotor…

Q: b) A 4 poles , 50HZ ,Y-connected three phase induction motor has the per phase equivalent circuit…

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Q: The results of no-load test and block rotor tests on a three-phase, wye- connected squirrel cage…

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Q: Q18. What will be the operating power factor of a 3-phase induction motor, whose ra Hz, 120 hp, and…

A: In this question we will find operating power factor of induction motor... Note :- as per our…

Q: Q17. What will be the locked rotor torque developed at unity machine constant by single phase…

A: Given, Zm =1.5+j2.5Za =8+j8so,Im =1201.5+j2.5=41.60∠-59.03oIa  =1208+j8=10.60∠-45o

Q: b) A 4 poles , 50HZ ,Y-connected three phase induction motor has the per phase equivalent circuit…

A: Induction motor.

Q: 4. With the help of a circle diagram determine (a) full load current b) power factor, c) slip d)…

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

Q: The resistance and reactance per phase of the rotor of a 3-phase induction motor are 0.6 ohm and 5…

A: Given values, Rotor Resistance, R= 0.6 ohm Rotor Reactance, X= 5 ohm Induced EMF between slipring at…

Q: A two phase symmetrical induction motor has the following information: 1 Kw, 4 poles, 220V, 50Hz,…

A: Given: Vs=220Vr1+jx1=3+j3Ωr2+jx2=2+j2Ωxm=j60Ω

Q: A split phase induction motor is rated at 0.25 hp ,1725 rpm ,120 V ,60 Hz, when the rotor is locked…

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Q: In a 3-phase induction motor, express the mechanical power developed, in terms of air gap power Pg.

A: Given, To express the mechanical power developed in induction motor in terms of air gap power Pg.

Q: a) The figure below shows the per-phase equivalent circuit of a two- pole three-phase induction…

A: Induction motor

Q: 8. The resistance and reactance per phase of the rotor of a 3-phase induction motor are 0.6 ohm and…

A: Rotor resistance=0.6ΩRotor reactance=5ΩInduced emf between the slip rings=80 VThe phase voltage of…

Q: A 440V, 60Hz,50hp, 3-phase induction motor is drawing 40A current at 0.8 p.f.   lagging. The stator…

A: The stator loss associated with the motor is evaluated as:

Q: (b) A three-phase, 30 kW, 50 Hz, 380 V, SCIM motor draws a line current of 60 amperes when it is…

A: Given values are - PFull=30kWVLine=380VoltILine=60Af=50Hz Given test results is -

Q: hase, 50-Hz induction motor with its rotor star-connected gives 500-V(r.m.s.) at till between the…

A: The solution is given below

Q: A 3-phase induction motor having a nominal rating of 100hp ( 75KW), and a synchronous speed of 1800…

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

Q: A 3-phase, 6 Pole, 50 Hz, 400 V induction motor takes a line current of 40 A at 0.8p.f. and runs at…

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Q: Q18. What will be the operating power factor of a 3-phase induction motor, whose ratings are 230 V,…

A: Here 3 phase induction motor is given and we have to find power factor as we know the rated power is…

Q: On no-load, the motor takes 4 A at 96 V and at 0.25 lagging power factor. The no-load friction and…

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Q: A three-phase, 440-V, 60-Hz, wye-connected induction motor takes a stator current of 50 A at 0.8…

A: Slip = (NS-Nr/Ns)×100 Input power = sqrt(3)×line voltage ×line current ×power factor.  Rotor input =…

Q: six pole three-phase 440-volts 50Hz, induction motor develops an 8-Hp at 955 rpm, the power factor…

A: Since you have asked multiple questions in a single request, we will be answering only the first…

Q: The power supplied to a three-phase induction motor is 50 kW and the stator losses are 2 kW. If the…

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Q: When a small a-c motor is operating at rated load from a 115-volt 60-cycle source, it takes 287…

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Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.