Answer / arup

ZONE 0 --Areas in which an explosive gases atmosphere (An
explosive gas air mixture) is present continuously or
present for long time.
ZONE 1---An area in which explosives gas atmosphere is
likely to occur in normal operation.
ZONE 2--An area in which an explosive gas atmosphere is not
likely to occur in normal operation and if it does occur,
it will exist for a short period only.

What will happen if the d.c. Machine is operated below rated speed?

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how do i calc busbar size for a rated current?

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what is the difference between ACTIVE POWER and REACTIVE POWER.I WANT CLEAR ANSEWER.

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what are the losses of capacitor??

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What is a soft start?

2 Answers   Bhel, jlpl,

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why DC source is used to idetify the polarity of CT/PT?

1 Answers  

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what is the diffrence between voltage and current?

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What is YNyn Transformer? and what are the other types in this?

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why nutral and earthing wire connect with each other in main panel board.

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How to select a cable size according to load

1 Answers   Red Bull,

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what is relay

8 Answers  

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