In an induction motor if air-gap is increased

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August undefined, 2024

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 WebDec 1, 2024 · In [13], a mathematical model is derived to optimize the design of squirrel cage induction motor and obtain optimum air gap field density and optimum split ratio of squirrel cage induction...

[Solved] In an induction motor if the air gap is increased thEn …

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. … WebMay 14, 2024 · However, an increase in air gap should also cause increase in leakage reactance, to which the maximum torque is inversely proportional. Hence its value should … how do you check for liver cancer

Solved skewing of motor bars in a squirrel. 4 The effect of - Chegg

WebThe most remarkable effect of the air-gap increment is the more required magnetizing current (i.e. smaller magnetization inductance). Note that the magnetizing current does … 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 … WebActually Magnetizing current (I o) for induction motor is 30 to 40 %. If the air gap increases between stator and rotor then • Power factor will be lowered. • Electromagnetic torque (T … pho takeout in charlotte

Why is the air gap in a synchronous machine larger than in an induction

Effects of Air Gap On the Performance of Induction Motor

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 WebThe 5 th and 7 th harmonics order current produces a resultant flux distribution in the air gap that can cause a phenomenon called cogging( Refusal to start smoothly or crawl ... A major effect of harmonic voltage and current in an induction motor is increased heating due to increased iron and copper losses at the harmonic frequencies. This ... pho tai recipeWebIn 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 how do you check for melanoma

"WebMar 30, 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 Leakage reactance will increase Leakage flux will increase The magnetizing current will increase This will cause a poorer power factor at all loads Download Solution PDF Share … " - In an induction motor if air-gap is increased

In an induction motor if air-gap is increased

Importance of air gap for motor design - Aarohi Embedded Systems Pvt…

WebDec 1, 2024 · The longer air gap thickness between the motor stator and the rotor, the more cooling liquid flowing through the air gap, which results the heat exchange becomes better between the otor and the cooling liquid and the temperature rise of the motor is lower.

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WebAir Gap Power in Induction Motor The motor converts electrical energy into the mechanical rotational energy. The input voltage is fed to the stator of an induction motor. The stator … WebTo 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 ...

WebAn induction motor draws more magnetizing current as compared to the magnetizing current drawn by the transformer. This is because the reluctance of the magnetic core of the motor is more as the air gap between the stator and the rotor offers more reluctance. How to calculate the inductance of the coils in a 3-phase motor? 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 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. SHOW ANSWER. 6. When R 2 is the rotor resistance. X 2, the rotor reactance at ... WebIf the air gap length is increased, the reluctance of the magnetic circuit will increase. This increase in the reluctance will demand more magneto-motive force to produce the required flux in the motor. To meet the additional requirement of MMF, the stator magnetizing …

WebMar 1, 2024 · Consequently, an induction motor draws a large magnetizing current (I m) to produce the required flux in the air-gap. That is why the small air-gap is preferred for the …

WebDec 26, 2024 · The full load torque of an induction motor does NOT depend on Q6. In case the air gap in an induction motor is increased, Q7. In squirrel-cage induction motors, the rotor slots are usually given slight skew in order to Q8. Which type of motor will work as single excited motor? Q9. how do you check for multiple sclerosisWebIn 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 … pho takeout in port huenemeWebIn 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. … pho takeout in glendaleWebIf the air gap is increased, it will offer high resistance to magnetic flux and the stator will draw more magnetizing current from the supply to maintain the required flux in the air gap to the rotor. This will reduce the power factor of an induction motor or … pho takeout in green bayWebMay 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 … pho takeout in harlingenWebMay 19, 2024 · When the air gap is eccentric, the motor is going to vibrate and make noise. While noise in and of itself is not a big deal, it is important to realize that both noise and … pho takeout in mechanicsburgWebIf the air gap of an induction motor is increased, the following will happen: The permeability of the magnetic circuit rotor-to-stator will decrease. The magnetizing inductance of the … how do you check for mono