No load test of induction motor is carried out to compute= A stator resistance B rotor resistance C magnetizing reactance D rotor reactance

1 Answers  

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A motor running with lenze frequiency inverter stops if I REDUCE SPEED with 25% load.If I run it in High speed and medium speed running smoothly with full load.please help me to solve it.

0 Answers  

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which will glow brighter?bulb 1 (110v,100w) and bulb 2 (230v.200w) series connection

6 Answers   EnPower India,

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how the vaccum ckt breaker workes..? how the arc is quenching in it?

1 Answers  

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how can we know cable size for a given current? if any one have catalogue plz mail to vijay_raju369@yahoo.co.in

5 Answers  

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when the motor was star position that is running ok but when the motor was delta it was tripped? why?

5 Answers   Nimbus, SEL Manufacturing,

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Explain the different methods used in the choice of rotor slots for reduction of harmonic torques in an induction motor.

0 Answers  

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What is transformer break down voltage.And what is flash oil flash point.

1 Answers   HP,

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Hello,l am complete dip and i was working maintance in ht dep again i study b.e completed again one year exp in ht totally two year i am ealigble in c license

1 Answers  

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When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<

0 Answers   Lupin,

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1.Why we use choke?If we use for high starting voltage then different type choke gives different voltage. Is it correct?

2 Answers   Dalkia, Luminous,

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What is water cooled chiller plant?

1 Answers   Gulf, IOCL,

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