synchronous generator with 5 pole pairs should have revolutions per minute to generate a sinusoidal voltage with a frequency of 60 Hz?

Q: Choose the correct answer 1) If speed of a synchronous generator decresed from 1800 RPM to 900 RPM…

A: In this question we will write machine related question problems... Note :- due to bartleby policy ,…

Q: Problem 8.11 A three-phase synchronous generator is rated at 120 MVA and 20 kV. The 60 Hz gen-…

A: As per Bartleby expert policy, only first three subparts are only to be answered. Kindly repost…

Q: نقطتا During the test of separately excited generator the speed of rotation must be held constant…

A: as per our guidelines we are supposed to answer only one question. Kindly repost other questions as…

Q: What is the major difference between induction motor and synchronous motor

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Q: In the stator winding of a synchronous generator, the chording angle is for eliminating fifth…

A: Given, In the stator winding of a synchronous generator, the nth harmonic n = 5

Q: The synchronous generator will have voltage and frequency depend on O Field current and speed. O…

A: In this question we will write  about synchronous generator  frequency  and voltage...

Q: The most common failure item with a three-phase induction motor system is the A. rotor bars. B.…

A: Option A is correct because  Rotor is a rotating part while stator is a stationary part of of an…

Q: A) Draw the phasor diagram of smooth rotor synchronous generator operating in over excited mode.

A: Synchronous generator under lagging load work in over excited condition

Q: Skewing of rotor conductors in a squirrel cage induction motor reduces a. heat developed while…

A: skewing of the rotor conductors are done in the induction motor for the specific reason

Q: The synchronous generator will have its voltage and frequency depend on OField current and speed.…

A: For synchronous generator, We know,   Induced voltage depends on field current , speed of rotor,…

Q: Preliminary: 1. For a synchronous generator with 2 poles and the rotating speed of 3000 rpm,…

A: According to question: 1. P=2NS=3000rpm∵NS=120fP⇒f=PNS120⇒f=2×3000120∴f=50Hz

Q: Synchronous generator can operate at any speed since the number of poles and the frequency is fixed…

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Q: 10. The difference between the synchronous speed and the actual speed of an induction machine is

A: The difference between synchronous speed and actual speed of induction machine is called:

Q: If rotor of an induction motor runs at synchronous speed, slip will be equal to 1. Select one: O…

A: Given: Rotor of Induction motor running at synchronous speed

Q: In a two-pole synchronous generator, the voltage positive peak... a) Is half the negative peak b)…

A: you know by Faraday law of induction e =-Ndϕdt so when value of change in flux is maximum the…

Q: A synchronous generator has 9 slots per pole. If each coil spans 8 slot pitches, what is the value…

A: 9 slots per pole  Each coil span = 8 slot pitches

Q: When the deviation between the stator and the rotor axis in a synchronous generator is measured to…

A: Synchronous generator  The asynchronous generator is also called an alternator, it is an electrical…

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: 8- If field resistance of a d.c. shunt generator is increased beyond its critical value, the…

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: Assume a three phase induction motor is connected to a three phase system and the shaft is coupled…

A: Three-Phase induction motor is a device which is used to convert 3-phase electric input power into…

Q: Explain the effect of speed on the open circuit char at dc generator

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Q: ndard practice of synchronous generator construction now a days is to ndrical field ating armature…

A: These are the few questions related to the basic understanding of alternators their construction and…

Q: The number of poles in the rotor circuit is identical for both squirrel cage induction motor and…

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Q: Explain in detail, Synchronous motor as a synchronous condenser.

A: A synchronous motor when over excited can supply reactive power to the system. Sometimes synchronous…

Q: bla 5 In 2-pole machines: the wave winding have greater generated voltage than *.the lap winding…

A: DC machines induced emf  E= PZN×flux/(60A)  It's depend on no of parallel path and no of pole.  And…

Q: Calculate the frequency of rotor current for six pole, 3-phase induction motor running at 950 r.p.m…

A: The detailed solution is provided below.

Q: If a 3-phase squirrel-cage induction motor were to run at synchronous speed, there would be no…

A: Induction motor is generally asynchronous motor means it run at below   it's synchronous speed . But…

Q: The rotor of synchronous generator has two slip rings for DC supply Select one: True False

A: The rotor of synchronous generator has two slip rings for DC supply

Q: During the test of separately excited generator the speed of rotation must be held constant and the…

A: In the test on separately excited generator, i.e., magnetization characteristics experiment, the…

Q: A 3-phase induction motor is wound for 2 poles and is supplied from a 50-Hz system. Calculate (I)…

A: Given data, The value of number of poles is P = 2. The value of frequency is f = 50 Hz. The value…

Q: What happens to generated EMF if frequency of the generator increases?

A: Speed is directly proportional to the frequency and induced emf is directly proportional to the…

Q: Question: What would the pole pass frequency be for a AC induction moor running at 878 RPM? ( assume…

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Q: The O.C.C. test of a DC shunt generator at speed

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Q: Rotor of a Synchronous Generator is laminated in order to reduce power loss by eddy currents. Select…

A: The eddy current loss is the type of power loss that causes, the circulating current in the rotor…

Q: briefly demonstrate the effect of filed current change on a synchronous generator with the help of…

A: When field current or excitation on a synchronous generator changes. The reactive power comes into…

Q: The standard practice of synchronous generator construction now a days is to have Rotating field O…

A: The objective is to determine the correct form of construction for the alternator.

Q: What action must be performed in a synchronous generator so that it delivers reactive power to the…

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Q: A 300  MVA, Synchronous generator has a moment of inertia 49000 Kg-m2  and Kinetic Energy 2300 MJ.…

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Q: Discuss the operation of synchronous motors as synchronous capacitors. Please solve this with in 1…

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Q: The synchronous speed [in rpm] of a 8-pole, 60 Hz generator.

A: formula for synchronous speed is given by                        Ns= (120f)/p where, Ns= synchronous…

Q: Comparison between induction motor and synchronous motor

A: Induction motor runs at a speed lower than the synchronous speed whereas synchronous motor runs at…

Q: an internal characteristic of a shunt generator is not a 1- Explain why flat curve.

A: As per Bartleby guidelines we are allowed to solve only one question, please ask the rest again.

Q: A 3 phase induction motor is wound for 4 poles and supplied from 50Hz system.  Calculate synchronous…

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Q: Te frequency of the rotor under the free shaft condition of an induction motor is it 0Hz

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Q: 6. A three-phase, 6-pole, 72 slots armature of a synchronous generator is wound using two-layer lap…

A:

Q: A synchronous generator has 9 slots per pole. If each coil spans 8 slot pitches, what is the value…

A: PITCH FACTOR,γ: It is the angle for each slot.                    Pitch factor,λ=180S/P Coil…

Q: A 4 pole generator is running at 1200 rpm. The frequency and time period of the emf geneated in it's…

A: Given, a generator having Number of Pole, P = 4 Speed, Ns = 1200 rpm

Q: Cascaded outages will cause individual generators to and results Select one: O a. make heavy losses,…

A: When demand is more than power generated the frequency of machine goes down and vice versa. When…

Synchronous Motor

The synchronous motor is an AC electric type motor where at a steady-state the shaft rotation is synchronized with the supply current variable-frequency. To an integral number of AC cycles, the rotation period is exactly equal. The stator of the motor in the synchronous motor contains multi-phase AC electromagnets due to which a magnetic field is created that rotates in time with the oscillation of the line current. The rotor contains a permanent magnet and the rotor rotates in synchronization with the stator field at the same rate and provides the second synchronized magnetic field which is rotating in nature as a result. When the synchronous motor is supplied with independently excited multi-phase AC electromagnets on both the rotor and the stator, it is termed as a doubly-fed machine. The most widely used AC-type motors are the synchronous AC motor and the induction AC motors.