What is synchronous speed? Select one: A. MOTORS THAT SPIN AT THE SAME SPEED B. DIRECTION OF ROTATION C. THE RPMS OF THE MOTOR D. THE SPEED OF THE ROTATING MAGNETIC FIELD

Q: A 10-pole DC generator has a simplex lap-wound armature containing 100 coils of 10 turns each. The…

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Q: In a 4-pole wave connected d.c. motor has 774 armature conductors. If armature current is 50 Amp.…

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Q: When a bar attached to an armature moves out so that the area of the loop it makes changes?  A. is…

A: When a bar ( Conductor ) which is connected to armature taken out

Q: d.c. motor has 774 armature conductors. If In a 4-pole rmature current is 50 Amp. and flux per pole…

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Q: Two windings were wound in the middle leg of the magnetic circuit with a relative permeability of…

A: According to guidelines we need to solve only the First 3 subparts. According to question, a) Draw…

Q: c) The O.C.C. of a DC shunt generator running at 300 rpm is as follows. 4 6. 7 Ir (A) Eo (V) 2 92…

A: It is given that: N=300rpm OCC Table:

Q: 3-2. Develop a table showing the speed of magnetic field rotation in ac machines of 2, 4, 6, 8, 10,…

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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: The magnetic field inside a solenoid is: Select one: O a. All the above O b. Proportional to the…

A: The magnetic field inside a solenoid is given by the formula, Where N is number of turns and I is…

Q: If there is a current of 2 A flowing counterclockwise in the coil (as seen from the +z direction)…

A: Torque is defined as the moment of force in a specific direction. It is mostly found in a rotational…

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

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Q: A 3-phase, 60 Hz, Delta-connected, AC generator has a stator with 60 slots, each slot contains 12…

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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

Q: How is a rotating magnetic field produced in a three-phase induction motor? Explain it with the help…

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Q: Difference in lap and wave winding.

A: Difference in lap and wave winding    These types of winding is used in alternator .

Q: A separately-excited DC generator with magnetization curve shown below (Figure 1) is driven by a…

A: VF=15 VRF=2.44 Ωra=0.1 Ω

Q: Discuss the saturation of a permanent magnet generator

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Q: The amount of torque on a current-carrying conductor in a magnetic field depends upon a. the amount…

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

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

Q: Q.36 Name three factors that determine the torque produced by an induction motor. Select one or…

A: Those  three factors are following in which torque depends upon:- i) the magnitude of rotor current.…

Q: In a 4-pole wave connected d.c. motor has 752 armature conductors. If armature current is 38.2 Amp.…

A: We have been asked to find torque developed in d.c. motor having following data, Pole of motor (P) =…

Q: Torque on a Current Loop: Motors and Meters• Describe how motors and meters work in terms of torque…

A: (a)     The motor contains the windings which is a loop of wire. The loop is placed between the…

Q: 33. The rotating magnetic field of a two-pole motor travels 360 electrical degrees. Ilow many…

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Q: A 3-phase, Y-connected, AC generator has a stator with 120 slots, each slot contains 15 conductors.…

A: Principle of Machine: In any electrical machine either it's a DC machine or AC machine, the EMF in…

Q: A 3-phase, Y-connected, AC generator has a stator with 60 slots, each slot contains 120 conductors.…

A: Need to find the number of turns per phase

Q: In the figure, the current through the wire (shown in cross-section) is into the screen. What will…

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Q: What part of a motor produces an inductive magnetic field within itself to facilitate the rotating…

A: The squirrel cage of a motor produces an inductive magnetic field when the supply given to the…

Q: A non-magnetic circuit has a reluctance of 38.6 gilbert per maxwell. Calculate how much flux will be…

A: Here the concept & the calculations related to the magnetic circuit. Given :- Reluctance R=38.6…

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

A: In this question we will find synchronous generator electrical and mechanical frequency in rad per…

Q: what is the phase relationship between the flux in the main pole of a magnet and the flux in the…

A: The shaded pole motor is an AC single-phase induction motor. The shaded-pole is in the shape of a…

Q: Why do motors have gaps or breaks throughout the rotor and commutator? It makes the motor cheaper…

A: Given  To explain why motors have gaps throughout the rotor and commutator

Q: Find the part of the DC machine part spreads the flux in the air gap of the DC generator? a.…

A: Function of magnetic poles in dc machine:-  Provides mechanical support to the field windings…

Q: In a 4-pole wave connected d.c. motor has 774 armature conductors. If armature current is 50 Amp.…

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Q: Which part of the DC machine produce the magnetic flux? a. Yoke b. Armature c. Brush d. Field…

A: The field winding connects with DC supply. Whenever the field winding is energies, it produces the…

Q: The south pole of one magnet is brought close to the south pole of another magnet. Will the magnets…

A: According to the fundamental theory of magnetism, the like magnetic poles repel each other and the…

Q: A 3-phase, 4-pole, 60-Hz, Y-connected AC generator has a stator with 48 slots, each slot contains 20…

A: To calculate the speed of rotation of the stator magnetic field in RPM (Revolutions Per Minute), we…

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.