A 3-phase wye connected 240V 60 hz 6-poles induction motor draws a total power input of 27 kW at 0.885 p.f lag. And has the following particulars per phase. Rs = 0.08 ohm Rr-s = 0.09 ohm Xs = 0.4 ohm Xr-s = 0.36 ohm Zo = 4.74 + j13 ohm Using approximate solution, determine the rotor rpm.

Q: In a workshop, there is a three-phase asynchronous motor with a power of 6 HP, an efficiency of 85%,…

A: Given dataOutput power, Efficiency, Initial power factor, Final power factor, To find outWe have to…

Q: In an induction motor, if the rotor is locked, then the rotor frequency of induction motor will be:…

A: Given: In an induction motor, the rotor is locked.

Q: A Three-phase four-pole AC machine has 60 coils in the stator and each coil has 100 turns. The coils…

A:

Q: A three phase 250 hp induction motor operates at 0.8 lagging power factor on 440 V, 50 Hz supply.…

A: We have been given induction motor with, HP = 250 Hp Power factor (Cosϕ1) = 0.8 lagging Supply…

Q: If the no-load speed of a squirrel cage induction motor connected to a three-phase, 50 Hz is 12.…

A:

Q: At starting of an Induction motor, the frequency of the rotor induced voltage would be

A: Mutual Induction:  Whenever flux in one coil links with the second coil, an EMF is induced in the…

Q: In a DC motor the relation between the core loss (Pcore) and rotational loss (Protational) iS O…

A:

Q: If rotor of an induction motor turns at synchronous speed, the frequency of the rotor will be zero.…

A: In this question we need to verify the given statement is true or false.

Q: A four-pole induction motor drives a load at 2575 rpm. This is to be accomplished by using an…

A:

Q: component is fabricated using cast iron in an Induction motor. Bearings Stator frame Rotor stator…

A: 3-Phase Induction Motor- 3-Phase induction machine- When three-phase stator displaced by 120' is…

Q: 17. A small single phase, 240 V induction motor is tested in parallel with 160 N resistor. The motor…

A: It is given that: V=240 VR=160 ΩIm=2 AIT=3 A

Q: the efficiency of the 1 phase induction motor could be better increased by adding a permanently…

A:

Q: Armature reaction in an alternator primarily affects

A: Conceptual Background:- Armature Reaction:- Simply put, the armature reaction depicts how the…

Q: In an induction motor, if the rotor is locked, then the rotor frequency of induction motor will be:…

A: Given that  The rotor of the induction motor is locked. Then the rotor frequency of the induction…

Q: A Three-phase four-pole AC machine has 60 coils in the stator and each coil has 100 turns. The coils…

A: A Three-phase four-pole AC machine has 60 coils in the stator and each coil has 100 turns. The coils…

Q: The generated voltage per phase of an alternator is E0 while the speed of rotor rotation is 3000…

A: We will establish the relation between the generated voltage and the speed of the alternator.

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

A:

Q: What is the output speed of AC induction motor in our lab with six poles per phase and its slip is…

A: Given Data: s = 8% P = 6

Q: A three phase induction motor operating at a slip of 5 % develops 20 kw rotor output power. What is…

A: The rotor copper loss in the above given operating conditions is calculated as shown below:

Q: block diagram fro dc motor refrigerator

A: Electrical machines can be either generator, transformer or motors. They can be either Ac machines…

Q: In an induction machine stator has 8 poles and is excited by a 60 Hz source. If the rotor is driven…

A: Sycronous speed=120×frequencypoles=120×608                   =900 r.p.m Given rotor rotates in…

Q: A 3-phase induction motor is wound for 2 poles and is supplied from 59-Hz system. When slip is 4%,…

A:

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

A:

Q: The number of poles in the rotor circuit of a 3-phase induction motor is O Always two. Zero, because…

A:

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: Draw the squirrel cage rotor of the three phase induction motor and explain the same.

A:

Q: small 4-pole generator with a six-turn rotor coil generates the following voltage wave: e = 169.706…

A:

Q: Generators using salient pole structure rotors are called turbo-alternators. Select one: O True O…

A: The explanation is as follows.

Q: Without changing the locations of the loads in the figure, a) Draw a suitable diagram to measure the…

A: Solution (a)

Q: Explain why rotator rotates in three phase induction motor

A: Induction Motor: The Induction motor is basically a rotating machine. It converts  Three phase Ac…

Q: The full load speed of a 60 Hz, 3-phase induction motor is 1120 r.p.m. The number of poles in the…

A: induction motor always near to synchronous speed  and synchronous speed =120*frequencyn. of poles…

Q: The armature of a DC machines is made up of If a 3-phase induction motor has synchronous speed of…

A: find explanation below

Q: If a 3-phase induction motor has synchronous speed of 900 rpm and the frequency in stator is 60Hz,…

A: If a 3-phase induction motor has synchronous speed of 900 rpm and the frequency in stator is 60Hz,…

Q: Permanent-split capacitor motor is in effect a 2-phase motor and at no load could attain the…

A: True and false?  Permanent-split capacitor motor is in effect a 2-phase motor and at no load could…

Q: A 6 pole, 50 Hz, 1-phase Induction Motor runs at a speed of 900 rpm. The frequency of currents in…

A: We need to find out cage current frequency for given motor

Q: If a 4-pole induction motor has a synchronous speed of 1500 r.p.m., then, supply frequency is

A: Given an induction motor with, Total number of poles, P = 4 Synchronous speed, Ns=1500 rpm Supply…

Q: The synchronous speed for 60 Hz induction motor can be equal to 3000 RPM. O True O False

A: An induction motor is a self starting motor and it doesn't run at the synchronous speed

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.