Why air gap in rotating machines should be small?

3 Answers  

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Why a single-phase induction motor not an inherently self-starting machine?

11 Answers   ETC, Hindustan Shipyard,

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how  do you choose the cable size as per amps rating & the voltage drop for the same.

0 Answers   C&W,

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how can we run the induction motor at 9000 rpm ,by keeping frequency constant??

2 Answers  

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what is the ciruit diagram of transformer vector grup test?

4 Answers   Green Power,

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Can u explain : how capacitor act when the supply is given is a.c and d.c. I know that when d.c supply is given then the capacitor charges and becomes open circuited. But please say about when a.c is given. I have seen that when a.c supply is given ,it charges and discharges, But when we plug in capacitor to our daily supply and take it out ,then we join those wires spark will appear,which seems charge is present ,but when a.c is given it should charge and discharge

3 Answers  

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what is the difference between Central Battery System and UPS in applications and uses? and why UPS suitable for Computers and central battery for emergency lighting?

0 Answers  

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ohms law is applicable for dc or ac current or for both??? explain it berifly??

3 Answers  

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How to calulate Locked rotor amper(LRA) for compressor type motors?

0 Answers   MAF Dalkia,

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how to calculate the slowness and fastness of energy meter if we have different kw load for example (0.746 kw and meter rev constant 400 and we calculate the 2 rev in 30 sec) please explain the formula thanks

1 Answers   WAPDA Water and Power Development Authority,

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what is mcb

7 Answers   L&T,

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How we can change the direction of rotation of Induction motor? Prove it using graphical

0 Answers  

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