Find the number of poles required, if the frequency is 50Hz and speed of the motor is 500 rpm.

Q: Prove that the frequency of the rotor induced emf in an induction motor is slip times its stator…

A:

Q: 4) For a motor output power is given by . .

A: The output power for a motor is given by:

Q: The slip of a 12 pole, 3-phase, 50 Hz induction motor is 10%. Find the speed of the motor ✓ 450 rpm…

A: Given, A 3-phase induction motor having, Number of poles, P=12. Frequency, f = 50 Hz. Slip, s=10%.

Q: In an induction motor, rotor runs at a speed O Lower than the speed of stator field O Having no…

A: In this question we will write speed of induction motor rotor..

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: An induction motor has 4 pole 50 Hz frequency find synchronous speed (rpm). If motor speed is…

A: Given values are - P=4f=50HzNr=1400rpm

Q: A 6-pole motor turns at 1080 rpm when connected to a 60 Hz voltage source. Most nearly, what is the…

A: Given: For the induction motor P=6Nr=1080 rpmf=60 Hz

Q: Angular speed of a DC motor running at a speed of 1200rpm is

A: To determine angular speed (in rad/sec) from the speed given in rpm

Q: The rotor reactance of the three phase induction motor is varies with of the rotor current.

A: According to the question we have to discuss the induction motor reactance.

Q: A 6-pole motor turns at 1080 rpm when connected to a 60 Hz voltage source. Most nearly, what is the…

A: Given: An induction motor has P=6Nr=1080 rpmf=60 Hz

Q: he speed of an induction motor fed from a 3-phase and 50 Hz source is 1440 rpm, so which of the…

A:

Q: If a 3-phase induction motor has synchronous speed of 600 rpm and the frequency in stator is 60HZ,…

A: Due to  guidelines I can solve only one question at a time if you want another solution you can post…

Q: block diagram fro dc motor refrigerator

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

Q: Torque developed by the cylindrical rotor synchronous motor is maximum, when the load angle is equal…

A: An easy question based on electrical machines . I provided the detailed solution for the same , have…

Q: 3-phase supply 50 Hz P-4 L.M When the motor at standstill, the rotor frequency is - nce repa…

A: The rotor frequency is given by     fr = s.fs Here s = slip of motor            fs = supply…

Q: How many poles are required on an alternator which runs at 300 rpm to develop

A:

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: 14 If the induction electrical machine operates at slip s = - 0,1 the mode of operation is * O…

A: The answer is Generator

Q: The frequency of emf in the stator of a 4 pole induction motor is 50Hz and the rotor emf frequency…

A: The rotor emf frequency is directly proportional to the supply frequency and slip. It is…

Q: 1. If we decrease the input voltage of an asynchronous motor and the load is not changed, then its…

A: We are authorized to answer only1 question at a time since you have not mentioned which question you…

Q: When the field current (If) is increased towards its rated value in the DC shunt generator, the…

A: Given, DC shunt generator, If, field current is increased

Q: A three-phase induction motor with 72 stator windings is excited with a 50 Hz AC voltage source. The…

A: Given: A 3-phase induction motor has 72 stator windings. Excitation frequency, f=50 Hz Slip,…

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: The step angle for a stepper motor drive having 2 number of poles and 75 rotor teeths is.

A: 2 poles means 4 phase. So step angel = 360/4*75=1.2 degree.

Q: the

A: In this question, induction machine frequency given and speed of machine given..We have to find out…

Q: O Record the difference between separately excited generator and self-excited generator.

A: Separately excited generator : An separately excited DC generator is the one whose field winding is…

Q: A 4 pole, 3 phase induction motor operates from a 50 Hz supply. Calculate (a) Speed at which the…

A:

Q: A 3-phase,4-pole induction motor is operating at frequency of 60Hz. Determine the speed of motor…

A:

Q: An induction motor is running at 3400 rpm working at a frequency of 60HZ. Find the speed of the…

A: Assume that given induction motor is  2-pole .  Given that  f= 60 Hz  rotor speed Nr = 4300 rpm…

Q: A synchronous generator has 15 slots per pole. If each coil pitches, what is the value of the pitch…

A: i have explained in detail

Q: Find the desired ones since the rotating field speed of an asynchronous motor with a frequency of…

A: Rotating field speed of an asynchronous motor with a frequency of 50Hz is 750 rpm a) to find the…

Q: When the supply frequency is 50Hz, synchrnous speed is 1500rpm and the rotor speed is 750 rpm.  If…

A:

Q: Find the slip of the motor, frequency is 50Hz for the 4 pole machine, when Ns=1500rpm.

A: The slip in the motor is the difference in the rotating speed of the shaft and the synchronous…

Q: The slip of induction motor 0.04 a frequency of motor 60 Hz. Hence the rotor current frequency is ?

A: Given, a induction motor having Slip, s = 0.04 Motor frequency, f= 60 Hz

Q: The step angle for a stepper motor drive having 10 number of poles and 75 rotor teeths is PEESLN

A: Step angle for the motor  Numbers of the poles = 10 Rotor teethb= 75 Step angle

Q: Who can I find the power factor for synchronous motor by use matlab

A: to find power factor for synchronous motor using matlab

Q: The Rotor frequency of the induction motor depends on the slip of the machine. Select one: O True…

A: Formula: Rotor frequency = slip× supply frequency.   If standstill or slip= 1 rotor frequency is…

Q: AY connected three phase 60 Hz induction motor has six poles. Find the speed of the motor given that…

A: Given: A star connected three phase induction motor Frequency, f=60 Hz Poles, P=6 Rotor frequency,…

Q: If the speed of an Induction machine is 100 rad/sec, the speed in rpm is

A: aacording to question we need to calculate the value of speed in rpm from rad/s.

Q: 4- The maximum power for a given excitation in a synchronous motor is developed when the power angle…

A: Here given that we need to find the at what power angle maximum power is developed by synchronous…

Q: ) A four-pole synchronous generator is spinning at a mechanical speed of 1500 r/min. What is the…

A: It is given that: p=4 Ns=1500 rpm

Q: Angular speed of a DC motor running at a speed of 1200rpm is ................. Answer

A: find explanation below

Q: 3-phase supply 50 Hz P-4 When the motor at standstill, the rotor frequency is

A:

Q: A 30, 60HZ induction motor has 2 poles. The slip is 2% at a certain load. Calculate, the synchronous…

A: we need to determine Ns, Nr, and frequency of induced emf in the rotor in Hz.

Q: Find the number of poles required, if the frequency is 50 Hz and speed of the motor is 500 rpm.

A: Given a motor having, Frequency, f= 50 Hz Speed of motor, Ns= 500 rpm

Q: In three-phase induction motor rotor speed is zero at the time of starting the induction motor.…

A:

Q: Since the generated power at 4% slip in a 3-phase induction motor is 15 kW, which of the following…

A: The slip is given as s=0.04, the generated power is 15kW. The rotor input is given as:

Speed control of motor

Speed control by DC motor-speed controller is required to realize variable speed drive. Whenever a motor drives a particular load, it is called drive, and variable speed drive refers to a load requiring variable speed. All this is obtained by a DC motor speed controller.