Answer / sid

1 TR = 400 CFM is a rough calculation used for the designing of duct used as a common rule....actually the cfm required to make 1 tr may vary according to the coil manufacturers.....so when designing duct using standards ,always check the cfm required to make 1 tr from the unit specifications.

Answer / virendra paril

12000 BTU

if we want to convert the two 12 V DC batteries in parallel for UPS ? what would be the result ? which is better for a UPS , connect two batteries in series or connect them in parallel ?

2 Answers  

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why the neutral line is not giving shock to us if we touch it ?

0 Answers   GPREC,

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What is milivolt dop test in Busducts? What is its significance & procedure to do the test?

0 Answers  

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The control system is used for?

3 Answers   CCP, NTPC,

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How the circuit breaker is selected for Induction motor of 100 kW, 415 volt, 0.85 power factor, 0.95 efficiency ?

0 Answers  

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how one can check the Current of a DC 12 V battery ? Procedure. I told that take a thick wire (having more wires in it) and then join the + and - terminals of battery with the help of two ends of a thick wire .... is this correct or wrong .....

1 Answers  

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What are the difference between C-Curve and D-Curve for MCB's.

17 Answers   ABB, DLF, Essar, GK companies, Nissi Engineering Solution,

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What is Load sharing of Transformer ?

0 Answers  

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what is pure resistive circuit and pure inductive circuit

1 Answers  

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what is V0/V rating of cable

1 Answers  

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purpose of check value

1 Answers   Seagate,

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operating Lt & HT voltages used in India?

8 Answers   Essar,

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