whether choke act as a voltage regulator in tubelight or not?

1 Answers   Bhel,

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why exciter frequency 150 Hz ?

1 Answers   Siemens,

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( Re: WHAT SHOULD BE THE RATING OF MCCB FOR 415V,3Ph,50KVAR CAPACITOR BANK Answer # 1 The capacitor current would be kvar x 1000 / (415 x sqrt3). This would be 70a approx. The MCCB selected should have *atleast 1.4 times this current i.e. 1.4 x 70= 98. So you should choose at least 100 A mccb.) regarding to this answer,i would like to know why the current have to times 1.4 to get the right amphere for the mccb.hows the formula to get the 1.4??tq

2 Answers  

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Why do we mix soda with water in LRS?

1 Answers  

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Explain cos(theta) and Sin(theta)

0 Answers  

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Lux meter is the measuring device to measure the lux level of lighting fixture. in industrial sector two types of lighting fixture is being used as street lighting purpose 1. HPSV (Sodium) and 2. HPMV (Mercury). HPMV having white light which is an combination of red, blue and yellow colour, while HPSV haivng Yellow lighting. in HPSV red & blue colour will be absent. during measurement of the lux level of HPSV and HPMV fixture. 1. Lux meter can measure the actual lux level of both fixture? 2. or it will show false reading for HPSV fixture light as it has only yellow light present. please give me answer

1 Answers  

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wat is the need of capacitor on aceiling fan?

5 Answers  

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if the rotor of induction motor is purely inductive then what is the electromagnatic torque.........

1 Answers  

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Hoe do calculate the Cable size for Amps rating ?

0 Answers  

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the minimum clearance b/w ceiling and plane of leaf of ceilng fan shall be ..........mm

1 Answers  

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What is the meaning of insulation leavel LI 75 AC 28 About scott transformer spcification

1 Answers  

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what is torque & how it will produce & what is the formula for that.

2 Answers  

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