500HP, 720rpm synchronous motor 3980V is connected with a 3-phase zone and excitation is 25A sample 1790 V (EA) voltage is produced in the armature. It has a synchronous reactance of 22 Ω and a torque of 30°.   a) What is the voltage value falling on the synchronous reactance?   b) What is the line current and power factor drawn by the motor from the mains?   c) What is the power produced by the engine?

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

A: When we swapping any two phase of induction motor,  direction of rotating magnetic field get reverse…

Q: A 480-V, 25-hp, 50-Hz, Six-pole, Y-connected induction motor has the following impedances in ohms…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: In a DC motor the relation between the core loss (Pcore) and rotational loss (Protational) iS O…

A:

Q: What are the similarities between an open-type split-phase motor and a capacitor-start motor? Select…

A: Open-type split phase motor has a centrifugal switch that operates when the motor reaches 75% of the…

Q: A 115 V,60 Hz, 4 pole 1-phase induction motor rotating in clockwise direction with 1710 rpm. What…

A:

Q: An 8 pole single phase induction motor is running at 690 rpm.what is the slip with respect to…

A: Given: A single phase induction motor with Number of poles, P=8 Motor speed, Nr=690 rpm

Q: Don't use ai to answer I will report your answer Solve it Asap with explanation and calculation

A:

Q: a. Explain how a rotating magnetic field is produced in a three-phase induction motor. b. Explain…

A: a) Rotating Magnetic Field When a three-phase supply is applied to a three-phase distributed…

Q: The efficiency of 100 kW, 600V, 3 phase synchronous motor is 90%. When the pf is 0.9 leading, what…

A:

Q: In the following figure explain how the rotation is produce when the motor is operating in full-step…

A:

Q: .. 3,450 rpm An induction motor has rotor resistance and standstill eactance of 0.1 ohms and 3.5 ohm…

A: Solve the problem     i didn't get Ques 9!... But I solve question 10

Q: In an induction machine stator has 8 poles and is excited by a 60 Hz source. If the rotor is driven…

A: Sycronous speed=120×frequencypoles=120×608                   =900 r.p.m Given rotor rotates in…

Q: A three phase 50HZ induction motor has 6 poles. If the full load slip is 3 %. determine the rotor…

A: 1st we will find out synchronous speed then we will calculate rotor speed . We will also calculate…

Q: 3-phase IM has a slip of 5% and a full load current of 16A. The rotor is connected in star and the…

A: In this question we will find rotor power loss in induction motor....

Q: A 10 pole three phase induction motor with supply frequency of 60 Hz. If the slip is 3 % at a…

A:

Q: What are the following statements are true for a three-phase induction motor? I. Three-phase…

A: Based on the construction and working of three phase induction motor this question can be answered .

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 3 phase 4 pole 400Volt 50 Hz induction motor is operating with slip 0.03 what is value of speed of…

A: Given values are - f=50HzPoleP=4Slips=0.03

Q: How to reduce eddy current losses produced in a three phase induction motor? O a. All given choices…

A: The hyterisis loss and the eddy current loss are present is in three-phase induction motor. it is…

Q: A 3-phase, 4-pole, 50Hz induction motor is running at 1455rpm. Find the slip speed and slip.

A:

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

A:

Q: How rotor winding is derived the power in the three-phase induction motor? O a. from Single phase…

A: The power flow diagram of a three phase induction motor is shown below,

Q: A 6-pole, 3-phase induction motor is connected to a 25 Hz supply and at full load the rotor e.m.f.…

A:

Q: A 3600 rpm, 60 Hz, 13.8 kV synchronous generator has a synchronous reactance of 20 02. The generator…

A: Given: Speed = 3600 RPMFreq = 50HzTerminal Voltage (V) =13.8 KVSynchronous Reactance (Xs) =…

Q: What are the factors that the induced voltage in three phase induction motor depends upon and…

A: Ans-:  Factors depends on a magnitude of  induced voltage is the change of magnetic flux & the…

Q: How to adjust reactive power in synchronous machine? A) by changing the load applied to the shaft…

A: It is known that a synchronous generator, will deliver reactive power  when Efcosδ>V…

Q: No load test was conducted on a three phase induction motor at different input voltages and the…

A: In induction motor, overall constant loss will be the sum of iron loss and mechanical loss. But…

Q: QUESTION 12 An 6.6 kV. three-phase star-connected synchronous motor is working at full load and…

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.