the synchronous speed of the motor in rpm

Q: DC series motor

A: For the DC series motor, Ise=Ia =Ia   Flux, conductor, poles, armature resistance values given in…

Q: The speed of d.c shunt motor is decreased if the field current is increased If field resistance of a…

A: 1.  In DC shunt machine Field current is  directly proposal to speed . if speed will decrease then…

Q: A stepper motor is connected to a wheel of circumference 10 mm. What is necessary pulse number to…

A:

Q: Which of the following can be slip of a braking AC induction motor? O A) 1.2 O B) 0.8 O C) 0.8 O D)O

A: Braking is a process for reducing speed of any rotating machine

Q: vi. The frequency of the power supplied from the synchronous generator is fixed: (a) Due to the AVR…

A: As per bartleby guideline for  vi The power that is supplied by the synchronous generator depends on…

Q: DC series motor

A:

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: What is the difference in the synchronous and the asynchronous motor.

A: In synchronous motor, the speed of the rotor and the speed of the magnetic field in the stator field…

Q: Voltage drop due to IaRa is at right angle to Ia in synchronous machine working at lagging power…

A:

Q: 10.a. An AC drive varies the speed of an induction motor by A. varying the torque of the motor. B.…

A: 10.(a) Speed of an induction motor is given as: Ns=120×fPwhere f is frequencyP is poles Speed of…

Q: In the experiment of finding the parameters of synchronous machine, the field winding should be * O…

A: In the synchronous machine,  Field winding of the synchronous machine should be connected?

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

A: True

Q: A 60Hz induction motor has 2 poles and runs at 3480 RPM. a. What is the synchronous speed (RPM)? b.…

A: Given, A 3-phase induction motor has, Supply frequency, f=60 Hz. Number of poles, P=2. Rotor speed,…

Q: The are suitable when constant speed is important. Stepper Motors Shunt Motors Servo Motors Series…

A: In this question we need to choose a correct option.

Q: Step angle of a stepper motor drive with number of poles 10 and 75 rotor teeth is

A:

Q: Problem_#07] Develop the timing diagram for the synchronous counter shown below. HIGH Ko K1 K2 K, K4…

A: The JK flip-flop synchronous counter is shown below:  The timing diagram will consist of the clock…

Q: Which one of the following statements is not correct about synchronous machine Select one: O a. The…

A: Choose the correct options Which statment is not correct for synchronous machine.     *Multiple…

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: In induction motor, speed ___ with increase in load. a. decreases b. constant c. as same as d.…

A: We know that the speed of induction motor is inversely proportional to the load. So as the load…

Q: Which among the given harmonic frequency creates motor torque problems in induction drive system. a.…

A: I have explained in detail

Q: n flux control method the speed of DC motor is obtained O Both above and below base speed O Above…

A:

Q: synchronous machine,

A: Open circuit test finds parameters: Synchronous reactance Xs The armature resistance.  The relation…

Q: Over-Excited Synchronous Motor running on half load is known as Synchronous Condensers Select one: O…

A: Synchronous motor is an AC motor that has a rotor which runs at the same speed as that of the supply…

Q: able d.c. drive system is used to drive a fa teristic T x n², where T, is the load torqu. speed in…

A:

Q: Three Phase Induction Motor Load Test, . At what load will the efficiency be maximum

A: The answer as given below:

Q: Synchronous speed of an induction motor is defined as O speed of an induction motor at no load speed…

A: Definition of synchronous speed speed of the revolution of the magnetic field in the stator winding…

Q: 1. Slip ring induction motors need maintenance.

A: As per bartleby expert policy, only one individual question is to be answered. Kindly repost…

Q: The full load slip of a synchronous motor is 0% O 2% O 1% O 5%

A:

Q: Which of the following can be slip of a braking AC induction motor? O A)0.8 O B) 1.2 O C) 0.8 O D)O

A: the induction motor value of the slip in the motoring mode should be less than 1

Q: In alternator, the diameter of salient pole rotor is.

A: Find explanation below

Q: DC Shunt motor, when the load increases Torque decreases. Select one: True False

A:

Q: 29. The maximum torque developed by the motor occurs at a speed of: 1800 RPM 1710 RPM 1494 RPM 1358…

A: Choose the correct option What is speed at maximum torque.  All data of induction motor is given in…

Q: Find the effect of ‘clearing time’ on transient stability.

A: Clearing Time:The Time at which fault cleared by the opening of the line circuit breaker so that the…

Q: Qn 1. Explain the conditions and operation of Synchronous machine parallel operation with diagram

A:

Q: - The critical speed in a DC shunt generator is the speed of the DC generator at which shunt field…

A:

Q: The DC compound motor is start by using the starter.

A: Answer is Four point starter For dc compound motor,  We will connect the  A to armature winfing L…

Q: In a synchronous 3-ph motor the induced torque is in the same direction of rotation. Select one: O…

A: Synchronous motors are those motors that run at synchronous speed. it can not be run at other than…

Q: 015/ExPlain in bries The constreeetion of a Dc machine.

A:

Q: The speed regulation of DC series motor is lesser than the DC shunt motor True False 200

A: The speed regulation of DC series motor is very high around more than 35% The speed regulation of DC…

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: An increase in the torque angle a results in: O A. No change in the induced torque O B. Decreasing…

A: The solution is given below is

Q: What will be the full speed of a 24 pole 50 Hz polyphase synchronous machine? Express in r/min and…

A: Given, A synchronous machine has P=24f=50

Q: The DC compound motor is start by using the

A: Three point starter is used to start the DC compound motor.

Q: Calculate the speed of an 8-pole synchronous motor operating at a.) 50 Hz and b.) 60 Hz

A:

Q: The synchronous speed [in rpm] of a 8-pole, 60 Hz generator.

A: formula for synchronous speed is given by                        Ns= (120f)/p where, Ns= synchronous…

Q: In Synchronous Motor Operation Comment on the motor operation as a phase advancer (capacitor)

A: It may be recalled that a d.c generator can be runs as a d.c. motor. in the same manner, an…

Q: On increasing the starting torque of the induction motor, the maximum torque is also increased. a)…

A: In an Induction motor the starting torque and maximum torque are independent to each other. The…

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.