search
person
What is the rotor of a motor?

1 Answer

Rotor is the rotating or moving part in motor and generator.

thumb_up_alt 0 like thumb_down_alt 1 dislike
Rotor is part of motor or generators

Related questions

Description : The rotor impedance of a slip ring induction motor is (0.1 + j0.6)Ohm/ ph . The resistance/ph to be inserted into rotor to get maximum torque at starting should be

Answer : The rotor impedance of a slip ring induction motor is (0.1 + j0.6)Ohm/ ph . The resistance/ph to be inserted into rotor to get maximum torque at starting should be 0.5 Ohm

Description : Explain with neat circuit diagrams the procedures to perform no load and blocked rotor tests on three phase induction motor.

Description : Ratio of the rotor reactance X to the rotor resistance R for a two-phase servo motor (A) is equal to that of a normal induction motor (B) is less than that of a normal induction motor (C) is greater than that of a normal induction motor (D) may be less or greater than that of a normal induction motor

Answer : C

Description :

Answer : Locked rotor current of a shaded pole motor is slightly more than full load current.

Description :

Answer : The rotor of a hysteresis motor is made of chrome steel.

Description :

Answer : In a hysteresis motor, the rotor must have retentivity.

Description :

Answer : The rotor developed by a single-phase motor at starting is zero.

Description : An electric motor in which both stator field and rotor rotates with same speed is called?

Answer : An electric motor in which both stator field and rotor rotates with same speed is called synchronous motor.

Description :

The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as?

Answer : The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as pull-in torque.

Description : In dc machines, the armature windings are placed on the rotor because of the necessity for  (1) electromechanical energy conversion (2) generation of voltage (3) commutation (4) development of torque

Answer : 3  Commutation

Description :

Answer : The bearings used to support the rotor shafts are generally ball bearings.

Description :

Salient pole rotor is use for which speed?

Answer : Salient pole rotor is use for low and medium speed prime movers.

Description :

Which rotor is use for high speed in turbo alternators?

Answer : Non-salient pole rotor is used for high speed in turbo alternators.

Description : In a single-phase induction motor when the rotor is stationary and voltage is applied to the stator, then (A) the flux is constant (B) the flux first decreases and then increases in the same direction (C) the flux increases and decreases in the opposite direction with the same magnitude (D) current flows through the rotor

Answer : In a single-phase induction motor when the rotor is stationary and voltage is applied to the stator, then the flux first decreases and then increases in the same direction

Description : A 3-phase, 4-pole, 50Hz induction motor runs at a speed of 1440 rpm. The rotating field produced by the rotor rotates at a speed of ________ rpm with respect to stator field. (A) 1500 (B) 0 (C) 1440 (D) 60

Answer : 0

Description : An 8-pole, 50Hz, three-phase induction motor is running at 705rpm and has a rotor copper loss of 5kW. Its rotor input is (A) 5.06 kW (B) 0.3 kW (C) 100 kW (D) 83.33 kW

Answer : An 8-pole, 50Hz, three-phase induction motor is running at 705rpm and has a rotor copper loss of 5kW. Its rotor input is 83.33 kW

Description :

Answer : The rotor slots, in an induction motor, are usually not quite parallel to the shaft because it helps in reducing the tendency of the rotor teeth to remain under the stator teeth.

Description :

The maximum torque which a synchronous motor will develop at rest for any angular position of the rotor, at rated stator supply voltage and frequency, is known as?

Description : number of windings of a coil in a stator of ac motor for ey slot ac motor

Description : What is a stator in a motor?

Answer : Stator is the stationary part of the electrical machine both motor and generator. In motor it provide the rotating magnetic field to drive rotor and in case of generator stator convert rotating magnetic field into current.

Description : What is the difference between Generator and Motor?

Answer : If a rotating machine delivers a power as output it is called generator. If power required to rotate a machine it is called motor.

Description : What will happen if the induction motor runs at synchronous speed ?

Answer : Since there is always slip present in rotor it cannot run at synchronous speed no current will be developed hence no torque will developed

Description : What would happen if a DC motor was supplied with AC ?

Answer : With three phase induction motor, humming and not rotate, but if single phase universal motor like air blower, home mixture, motor run on constant speed..speed variation not possible...

Description : What is the slip (as a percentage) when a 6 pole single phase induction motor operating on 220 V and 60 Hz is rotating at speed of 1140 rpm? A) 60% B) 5% C) 10% D) None of these

Answer : What is the slip (as a percentage) when a 6 pole single phase induction motor operating on 220 V and 60 Hz is rotating at speed of 1140 rpm? A) 60% B) 5% C) 10% D) None of these

Description :

Answer : The armature may burn if the back e.m.f. of a D.C. motor vanishes suddenly.

Description :

Answer : Centrifugal switch disconnects the auxiliary winding of the motor at about 70 to 80 percent of synchronous speed.

Description :

What is the maximum value of torque angle in synchronous motor?

Answer : The maximum value of torque angle in synchronous motor is 90 degrees electrical.

Description : what will happen when excitation of an unloaded salient pole synchronous motor suddenly gets disconnected?

Answer : When excitation of an unloaded salient pole synchronous motor suddenly gets disconnected the motor will stop.

Description : What is the definition of induction motor?

Answer : its working on magnetic base made by coils and its work with 1 phase or 3 phase ac or dc supply

Description : What is the function of induction motor?

Answer : while you give supply to motor its motor run on magnet base 

Description : What are the advantages of DC series motor?

Description : What can cause high amperage on a motor?

Answer : High  amperage  can  result  in  a motor  when the  amount  of  load  increases. when  load  increases  , it  reduces  the  rotor  speed which  increases  the  slip  at  constant  synchronous  speed ... ,  as  a  result  more  current  shall  have  been  drawn  to  maintain  the  additional  load.

Description : What will happen if you increase the current in the motor?

Answer : Increasing current means increasing frequency of the motor because current is directly proportional to rotations of the motor rotor

Description : What are the parts of AC motor?

Description :

What is the principle of synchronous motor?

Description : What is the use of synchronous motor?

Description : What is the RPM of a DC motor?

Description : What is the principle of AC motor?

Description : What is the principle of DC motor?

Description :

What is back EMF of synchronous motor?

Description : What is the back EMF of a dc motor?

Description : What is the back EMF of the motor?

Description : What is a conveyor motor?

Answer : Motors used to run conveyor belts.

Description : What is an electric motor drive?

Answer : An electric drive is a complex electromechanical system that drives various actuators in industrial and industrial work machines. In this case, control is carried out using a technological process ... calculation of the kinematic and load characteristics of the electric drive is carried out.

Description : What is a servo motor and how does it work?

Answer : It is a simple electrical motor that is operated by AC or DC signal in order to provide a precise angular motion for a given electrical signal.

Description :

What is mean by plugging in three phase induction motor?

Answer : Plugging in three-phase induction motor means interchanging of any two phases of a stator for quick stopping.

Description : What are the speed control methods of dc motor?

Answer : Field control of DC motor Armature control of DC motor

Description : What is the use of an electric motor?

Answer : Electrical motors are use for converting electrical energy to mechanical energy. It may be use in fans, pumps, washing machine, cranes, trains, factories, industries etc.

Description : AC motor

Answer : AC motor AC motor have two types one is Induction motor and second is synchronous motor. Induction motor have two types one is single phase induction motor and second is three phase ... self starting motor so using  external motor or we have to start it as induction motor.

← Prev Question Next Question →
editAsk a Question
...