(a) Compute the stator teeth for each pole. (b) Compute the pulse rate required to obtain a rotor speed of 4500 rpm. (c) Compute the number of steps required for the shaft to make 8 revolutions.

Q: Question-4 For each of the following main parts that make up the alternator (1 to 4), choose the…

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Q: In an induction motor running, if the direction of the rotating field is changed by swapping the two…

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Q: 1. Current flowing through the field coils : a. Magnetizes the pole pieces. b. Makes the generator…

A: MCQs type questions are given. Note: As per Bartleby Portal, I am solving first three MCQs.

Q: Calculate the losses in the machine and its efficiency if the power input is 18,000 watts, under…

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Q: Explain in detail the braking of Induction Motors

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Q: (b) A 6 pole, three - phase induction motor operates from a supply frequency of 60 Hz. Calculate:…

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Q: Speed control 11 12 field 1 h eo stat 5 Prime armature E1 Mover 6. DC Generator Power Supply Load…

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A: It is given that:

Q: How did you get a rotational/mechanical speed of 1150 rpm?

A: Note Mechanical RPM = Electrical RPM / ( Pole pair) Electrical RPM = Mechanical RPM *( Pole pair)

Q: 1. A six pole Dc Generator has na armature winding with 504 conductors connected in six parallel…

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Q: Explain in detail how AC motors develop a rotating magnetic field.

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Q: Some Unique Features of the Hysteresis Motor

A: Hysteresis motor is a type of motor which comes under the category of synchronous motor which has…

Q: The machine shown in Figure 2 has three concentrated stator coils, each of eight turns. The coils…

A:

Q: 2- A two-pole motor is operating at 50 Hz. Determine the synchronous speed of the rotating magnetic…

A: Given: A motor with Poles, P=2 Frequency, f=50 Hz

Q: A four- pole generator, having a simplex wave-wound armature has 50 slots, each slot containing 18…

A: Given  P=4 It is a simplex wave wound ⇒m=1 A=2 Z=18×50 Z=900 E=357 V N=1500 rpm

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Q: DC motor's magnetic field gets stronger with an increase in mechanical load?

A: DC Machine  A DC machine is nothing but a synchronous machine plus a commutator. DC…

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Q: A dc 4 pole wave wound generator is running at 1000 rpm having 1200 conductors and flux density is…

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Q: The back emf of a dc motor

A: The explanation is as follows.

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A: Given, Total number of pole, P = 4. Speed, N = 1500 rpm.

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Q: 2. An armature has 268 coils and rotates at 900 rpm. Each brush covers 4 commutator segments. a)…

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Q: 6: The power input to a 415 V, 50 Hz, 6-pole, 3-0 IM running at 975 rpm is 40 kW. The stator losses…

A: Given information is shown below:P= 6f=50 HzPin= 40 WPstator=1 kWPf+w=2 kWNr= 975 rpm

Q: b) at half the speed. The output voltage is now 190 V The actual wind speed is lower than rated, so…

A:

Q: 3. Which of the following statements IS NOT CORRECT ? * for two motors with equal output power,…

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Q: A stepper motor stator has 8 main poles with 5 teeth each and the rotor has 30 teeth. Determinę i)…

A:

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.