A four-pole, three-phase induction motor drives aturbine load. At a certain operating point the machinehas 4 percent slip and 87 percent efficiency. The motordrives a turbine with torque–speed characteristic givenby TL = 20 + 0.006ω2. Determine the torque at themotor-turbine shaft and the total power delivered tothe turbine. What is the total power consumed by themotor?

Q: A three phase 20 pole star connected alternator has 140 slots on the armature. Each slot contains…

A: The solution can be achieved as follows.

Q: What will be the operating power factor of a 3-phase induction motor, whose ratings are 230 V, 50…

A: Given-          V=230Vf=50 HzP=120 hppoles=4η=92%il=260 Acore loss=1710 Wstator loss=2830 W…

Q: 4. The de shunt generator is connected to a load that draws 28,800 watts, given the armature and…

A: In the question 4, we need to calculate the generated emf.    We know output power Po= VI Where V…

Q: A d.c. generator running at 25 rev/s, generates an e.m.f. of 150 V. Determine the percent- age…

A: Given data, Speed,  N1=25 rev/s = 25×60=1500 RPMN2=20 rev/s=20×60 = 1200 RPM EMF of generator E1=150…

Q: A 6-pole, 3-phase AC generator has 12 slots per pole and four conductors per slots. The winding is…

A: It is given that: Number of poles=P=6Number of phases=m=3Number of slots=S=12Number of conductors…

Q: i. What are different types of rotors used in an alternator?

A: There  are mainly two types of rotors used in alternator.

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

A:

Q: A DC generator has 4 pole, wave wound amature with 736 conductors. If the induced voltage in the…

A: According to the question we have to find the value of flux per pole.

Q: In DC generators, lap winding is suitable for ) high voltage, high current low voltage, high current…

A:

Q: Iron losses in a DC machine are independent of variations in

A: The explanation is as follows.

Q: Check all the correct statements on AC machines (induction and synchronous) below. O The current…

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

A:

Q: A 8 pole, three-phase, star-connected alternator has an armature with 140 slots and 6 conductors per…

A: 3 phase star connected alternator has  8 pole, total no of slot =140 6 conductor per slot Speed N=…

Q: An 8 pole, lap connected armature has 500 conductors has the flux per pole is 20 mWb is driven at…

A: For lap connected armature, Number of parallel path ( A ) = number of pole

Q: 1. A 500 V, 250 kW, long shunt compound generator induces an e.m.f. of 480 V when running at 1000…

A: As per BARTLEBY GUIDELINES, For Multiple Questions, we have to answer only first question. So I…

Q: . What are the various losses in an induction motor? On what factors do they depend

A: The fallowing are the various losses that occur in an induction motor:

Q: Stationary part in a DC machine is called A5 a) rotor b) commutator c) stator d) none of these

A: In this question we will write about stationary part in a DC machine....

Q: At rated voltage, a 125 kw, 300-V long shunt compound system provides power with a stray power loss…

A:

Q: 3. A group of electromagnets that create flux in a d-c generator (the field circuit) has an…

A:

Q: What are the losses types of 3-phase induction motor?

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Q: In the DC shunt generator, the induced voltage in idle operation is 127V. Output voltage when loaded…

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Q: There are 72 slots in a 3-phase, 8-pole, 50 Hz, star connected alternator. There are 2 conductors in…

A:

Q: 3.17. A 200-turn coil is rotating at a speed of 3600 rpm in a 4-pole generator. The flux per pole is…

A: The given question is solved in step by step process.Explanation:

Q: If two 3-phase induction machines are mechanically coupled with each other. The two machines are…

A: The induction motors are coupled here mechanically. The speed will same for both machines because of…

Q: 1. A 500 V, 250 kW, long shunt compound generator induces an e.m.f. of 480 V when running at 1000…

A: Given that: Terminal voltage Vt=250 V Full load armature current Ia=40 A Friction windage loss,…

Q: A 3-phase, 6-pole, 60-Hz, Y-connected AC generator has a stator with 48 slots, each slot contains 20…

A:

Q: The power supplied to a three-phase induction motor is 20kW and the stator losses are 1000W. If the…

A:

Q: 1. Variable loss in a dc series generator = la2 Ra. 2. Lap winding is suitable for high current,…

A: Will consider each statement separately.

Q: Rotor resistance of a three-phase induction motor is 0.080 per phase. Maximum torque is available at…

A: We have an equivalent circuit of induction motor with, Maximum torque occurs at 12% slip = 0.12 Slip…

Q: Example 1: The stator of a 30 , 2-poles machine has 18 slots and a double-layer winding. The coils…

A: Machines comprise 3 phases, 2 poles having 18 slots with double layer winding. so here  The phase is…

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…

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Q: A series generator having a combined armature and field resistance of 0.4 ohm us running at 1000 rpm…

A:

Q: The field circuit of a 125-volt dc generator has a resistance of 50 ohms and an inductance of 12.3…

A: The solution is given below

Q: Q10. The rotating machine of Figure Q10 has the following parameters: Lss = 0.18 H, L = 0.06 H, and…

A: Given Source A=2.5 A (DC) Source B =8.5 A(rms), 50 Hz   peak values are Source A=2.5 A Source B=8.52…

Q: In a motor-generator set, calculate the number of poles required in the motor to convert AC 60 Hz…

A: In this question , we will find no of poles of motor with given motor generator set data...

Q: what is the conclusion for the concepts of rotating amature and rotating field in an alternator?

A: There are two types of alternators are used one is rotating armature type and the other one is…

Q: The DC shunt generator with the terminal voltage 350 V, armature drop 7 V and the each brush drop 2…

A:

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.