How to size fuse? How to size MCB?

210

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Is a contactor (or master relay) required between incoming lines and a VFD? The question goes to safety. If a contactor were used before the VFD and an e-stop engaged then the motor will coast to a stop (i.e. VFD loses power) instead of stopping much faster if the VFD braking fucntion were used. It would make more sense to keep power on the VFD.

729

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Can any one please give me a test case for transaction of money thro' mobile phones. I really need it soon. i need the test case in ieee format.please anyone help me.

1063

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What are the enzymes produced by streptococci?

939

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Greetings This question is about hydraulics and I request an expert to answer it. A simple hydraulic machine is made up of two heads, a larger one with a larger force inside a wider pipe and a smaller one with a smaller force inside a smaller pipe in width as in the second picture on this link: http://science.howstuffworks.com/hydraulic1.htm The question is this: what happens if the smaller head and the smaller force doesn’t exist but the smaller pipe is high enough to take all the liquid? For example the larger head is 1.00 sqr metre and can go down 1.00m under a weight of 100.00kg. The cross sectional area of the smaller pipe is 0.001 sqr metre. Now when the larger head goes down 1.00m, how high the liquid from the wider pipe can go into the smaller pipe of the cross sectional area of 0.001 sqr metre? Regards

815

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where ESI applicable in Industrial area , WC can be taken from general insurance companies, if so will it be valid ?

471

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Hi, Me & my friends want to train in Oracle Apps HRMS application(Functional). Hence i would need a real time trainer assistance/training institutes in Hyderabad. Kindly reply /contact me on 9703328023 in case you know.. Thanking you.

1003

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Give ONE reason for Balance Sheet to be out of balance

858

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What is the syntax for datagrid and specifying columns?

1452

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Q- Control problem are mainly classified in _____ types. a-)4 b-)3 c-)6 d-)nono of these Few of them i know is 1- regulator type problem (eg- Air conditioner) 2- tracking problem (eg missile trcking problem) 3- sybernatics 4- optimal control problem

977

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when do we use roller bearing, deep groove ball bearing, angular bearing, sealed bearing, semi sealed bearing, unsealed bearing, anti friction bearing, journal bearing, thrust bearing

816

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how to find Developments system to get authorised?

808

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what is value of Jin transformer

873

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Received an order from Babu for the supply of goods Rs.200/-. state whether the the following transcation is business transcation or non business transcation? with reson or explaination?

611

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What are the defects in exhaust valve?

745

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