In an induction motor if air-gap is increased
WebIn an induction motor, if the air gap is increased (a) its speed will reduce. (b) its efficiency will improve. (c) its power factor will reduce. (d) its breakdown torque will reduce. [I.E.S. … WebQuestion: skewing of motor bars in a squirrel. 4 The effect of increasing the length of air-gap in eage induction motor, (SCIM) which statement an induction motor will be to increase the (a) power factor (b) speed (c) magnetising current (d) air-gap flux is false ? (a) it prevents cogging (b) it increases starting torque (c) it produces more umiform torque (a) it
In an induction motor if air-gap is increased
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WebThe air gap in an induction motor should be made small so that the induction motor gives better performance. The small air gap may result mechanical problems in addition to the … WebWhen air gap eccentricity exists in a motor, the air gap flux will be off balance, causing different levels of voltage to be induced onto the rotor. This results in irregular current …
WebIn an induction motor if the air gap is increased than which of the following statement is correct Speed will decrease Power factor will decrease Power factor will increase Speed will increase This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. See Answer WebFeb 13, 2024 · it is impossible to have zero air gap for rotating machine. The rotating machine must have the air gap for its rotation. The optimum air gap of an induction …
Webmotors are sometimes built as single phase induction-run motors and these have no starting torque and have rather less torque for a given stator B-field. (You do experiments on two … WebIn induction motor, higher values of ampere-conductors give rise to (a) increased copper losses leading to increased temperature rise and poor efficiency. (b) increase in overload capacity. (c) decrease in size of motor. (d) all of the above. SHOW ANSWER 16. High voltage induction motors have number of ampere-conductors. (a) large (b) small
Webin an induction motor if airgap is increases then power factor of the motor gets decreases because the motor draws more magnetizing current which lags the voltage by a more …
WebDec 13, 2024 · If the air gap of an induction motor is increased, The permeability of the magnetic circuit will decrease. The magnetizing inductance of the motor will decrease. … fly wheels rampWebIn case the air gap in an induction motor is increased A. The magnetizing current of the rotor will decrease B. The power factor will decrease C. Speed of motor will increase D. … green road community center bangorWebIn an induction motor if air-gap is increased. A. The power factor will be low. B. Windage losses will be more. C. Bearing friction will reduce. D. Copper loss will reduce in an … green road community parkWebJan 23, 2024 · If the air gap of an induction motor increases, 1) The permeability of the magnetic circuit rotor-to-stator will decrease. 2) The magnetizing inductance of the … flywheel sports upper west sideWebMay 7, 2024 · The term ‘cogging’ is associated with. Ques 12. A 50 Hz, 3-phase induction motor has a full load speed of 1440 r.p.m. The number of poles in the motor is. Ques 13. A three-phase, 50 Hz induction motor has a full load … green road community library raleigh ncWebTo maintain the air-gap flux at a constant value, ... The main disadvantages of the slip-ring induction motor drive are (a) the increased cost of the motor in comparison with a squirrel cage, (b) the need for slip-ring maintenance, (c) difficulty in operating in hazardous environments, (d) the need for switchable start-up resistors, and (e) the ... green road coleraineWebinduction motors depends upon the shape of the slots (i) Open slots: In this type of slots the slot opening will be equal to that of the width of the slots. In such type of slots, assembly and repair of winding are easy. However such slots will lead to higher air gap contraction factor and hence poor power factor. fly wheels power claw