Answer / wasif arshad

in simple words it is a very small air handling unit and
suspended above the false ceiling. A small blower throws
air which when strikes with the coil becomes hot or cool as
the case may be.

CFM (cubic feet per minute) can be calculated by the help
of cfm meter. it simply consists of a fan and a display
unit. When the fan is taken in front of diffuser it rotates
with a fix speed depending on the speed of air. Fan is
connected with a switch which produces fix no of impules
depending on its speed. Hence these impulses are sent to
the display unit at which these impulese appear in the form
of cfm

Answer / sag

The Area of the Diffusser is taken in to consideration and
velocity of the air. by this we can calculate the CFM

Answer / ali

1-How can i calculate the required air flow for a space?
2-how can i calculate the air flow for a FCU if i know its BTU or tonage?

What is a Phase shift meter? Where can I get one?

0 Answers  

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Can anybody explain me the electrical circuit of indian railways to drive electrical engines(LOCOMOTIVES)? How does overhead lines work in the circuit to drive different trains on the same track?

1 Answers  

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what is neutral voltage

3 Answers   Power Grid,

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. What should be the minimum and maximum ohmic value for earthing?

1 Answers  

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Tell me about ur past electrical maintanence job

0 Answers   Apollo Power, Solar,

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What happen when change order of CT in GIS feeder?

0 Answers  

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dear sir, How i calculate the 2 phase welding transformer power or kva?? kindly tell me....

2 Answers   Gedco,

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plz send me the procedure and syllabus for mseb exam

0 Answers  

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What is essential to prove safe isolation of electrical circuit?

0 Answers  

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what is the primary current in 415/415 v when secondry of dry type transformer is shorted.?

3 Answers  

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following are the questions asked in interviews: 1) Considering the short circuit fault, which switchgear is preferable, SFU OR MCCB? Which operates faster? whicg one is popular in Indian Market and why? 2)Define SCPD. What is type2 coodination? 3)Why the contactor rating is higher for the fuseless selection than for fuse selection? whether the ratinf of SFU or MCCB remains the same in both the cases? 4)If the HP rating is known then can you calculate the ratings of L.V Switchgear(SFU/MCCB, contactor, OLR) without using the selection chart?

0 Answers  

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what is meant by trivector meter?

2 Answers  

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