7. An AC motor has 6 poles and spins at a synchronous speed of 1200 rpm. What frequency is being supplied to the motor? 120 Hz 60 Hz 100 Hz 50 Hz

Q: What speed (in rpm) must a two-pole rotor rotate at to produce 50HZ AC?

A: given data f=50 Hz pole=p=2 N=speed in rpm

Q: 8) A ten-pole AC generator rotates at 1200 rpm. What is the frequenc AC voltage generated by the…

A: In this question we will find frequency of AC voltage generated by AC generator....

Q: Calculate the slip of a 6-pole induction motor with a rotor speed of 960 rpm at 口 0.05 口 0.06 0.04

A:

Q: The synchronous speed of the rotor is 2100 and the percentage is 0.02% and that the synchronous…

A: In this question,  We need to determine the synchronous speed of the field?

Q: Q2 Calculate the output voltages V, and Va in the circuit of Fig. 4.29. 2000 K) 20 k2 V =0.2 V 2XXI…

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: The speed of rotating magnetic field of 8 pole 50 Hz induction motor is?

A: Given, Frequency, f = 50 Hz. The number of pole, P =8

Q: The O smaller O larger the number of poles used in a stepper motor, the better the resolution

A: here we have to give relation between the number of poles and resolution.

Q: A 10-pole, 3-phase induction motor operates from a supply with frequency 55 Hz. Calculate the speed…

A:

Q: What is the copper loss in the rotor circuit in kW? An induction motor is running at 40% of the…

A:

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: 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: What is the effect of the capacitive load to the terminal voltage of the alternator?

A: It is known that capacitive load supplies leading reactive power in any circuit. and the apparent…

Q: If the supply voltage in a three-phase induction motor is reduced by 10%, what will be the…

A: Given, The supply voltage of a three phase induction motor is reduced by 10 %. Let, E1=EE2=0.9E

Q: A four-pole synchronous motor needs to operate at a speed of 1000 rpm. Determine the frequency of…

A:

Q: which of the following is sometimes referred to as the motor secondary of a 3 phase induction motor…

A: In 3 phase induction motor supply is given to stator from stator power is induced in rotor through…

Q: Draw and label both the power and control circuit of a 3 phase DOL induction machine starter

A:

Q: A voltmeter gives 120 oscillations per minute when connected to the rotor of an induction motor.…

A: Given that voltmeter is connected to rotor of induction motor and gives 120 oscillations per minute.…

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: 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: The number of stator poles produced in the rotating magnetic field of a 3-ϕ  induction motor having…

A: We can use the formula,P = 2n- P is the number of stator poles- n slots per pole per phase Given,n =…

Q: When the supply voltage to an induction motor is reduced by 10%, the maximum torque will decrease by…

A: Given, The supply voltage to an induction motor is reduced by 10%. V2=0.9V1

Q: A 4 pole 50 Hz induction motor is running at 1470 rpm. What is the slip value?

A: Given, Total number of Pole, P = 4. Frequency, f = 50 Hz. Rotor speed, NR=1470 rpm.

Q: The rotor power output of three phase induction motor is 15 kW. What would be the rotor copper loss…

A: Given the rotor power output of three phase induction motor is, Rotor Po/p=15 kW Slip, s = 4 % =…

Q: A four pole 60 Hz wound rotor motor is to be used as a frequency converter. At what speed must the…

A:

Q: The total number of slots on the stator of a three-phase 6-pole induction motor having 3 slots per…

A: Given a 3- phase induction motor having, Number of pole = 6 Slots per pole per phase = 3 Number of…

Q: the rotor frequency of a four-pole, 60 Hz induction motor with 5% full * load slip is 50 Hz O 60 Hz…

A:

Q: The sparking at the brushes of a dc generator is due to winding distribution high constant…

A:

Q: At start the slip of an induction motor is equal to O 0.75 00 O 0.5

A: At starting the rotor speed of induction motor is zero. Nr=0 Let a induction motor with synchronous…

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

A:

Winding and Constructions

Alternating Current (AC) winding is generally of the 3-phase type due to the inherent advantages of the 3-phase machine. Armature coils must be connected to the yield balance (equivalent in magnitude and 2/3 of the series phase difference of the rod) 3-phase electromotive forces (emf). The armature should be divided into step-bands to start with slots around the perimeter.In the construction of AC machines, the frame is used as an external protective shield to protect it from environmental conditions. The frame also serves as the outer perimeter, allowing the interior to be easily placed. The static state section of the devices is the stator winding attached stator.