Use the formula:P(KVA) = VA/1000where P(KVA) is power in KVA, V is voltage and A is current in amperes. For example, if V is 120 volts and A is 10 amperes, P(KVA) = VA/1000 = (120)(10)/1000 = 1.2 KVA. Calculate power rating in KVA when you know voltage and output res...
In this formula,Pis the power inwatts,Ermsis the rms voltage in volts, andIrmsis the rms current in amperes. However, in an AC circuit, impedance consists ofreactanceas well as resistance. As a result, the voltage and current are not in phase. This complicates the determination of power....
If the circuit is a purely reactive circuit (resistance=0), active power shall be zero. Reactive power in a purely reactive circuit can be calculated using the following formula: Reactive power, Q = (Current)2x Reactance = I2X In a purely reactive circuit, the current leads the voltage or...
These VA meters are intended to measure the true apparent power S which is defined as S=V.sub. rms XI.sub.rms but, are generally designed to operate according to one of the following approximate formula: (1) S'=V.sub.rect XI. sub.rect X(1.11).sup.2 and(2) S ={square root}P....
I am somewhat troubled by the 'basic' formula that describes the relationship between apparent power (S), active power (P) and reactive power (Q) in AC systems. This formula is S^2 = P^2 + Q^2 and makes sense to me in linear systems with or without phase shif...
We present psychophysical experiments designed to reveal the role of facilitative contour interactions (the so-called `association field') in apparent motion. We use the Ternus display (a trio of horizontally aligned elements oscillating in apparent motion). This display is perceived in `element' mot...
These VA meters are intended to measure the true apparent power S which is defined as S=V.sub. rms XI.sub.rms but, are generally designed to operate according to one of the following approximate formula: (1) S'=V.sub.rect XI. sub.rect X(1.11).sup.2 and(2) S ={square root}P....
Initial algorithm B-V to Kelvin vart =4600* ((1/ ((0.92* bv) +1.7)) +(1/ ((0.92* bv) +0.62)) ); Kelvin to xyY If you model a star as a blackbody, then you can use a numerical approximation of thePlanckian locusto compute the xy coordinates (CIE chromaticity) ...
aAlthough both companies are generating impressive sales,neither has yet found the formula for online profits. 虽然两家公司引起印象深刻的销售,都未发现惯例为网上赢利。[translate] aThe United States of America Shenhuo Group Limited 被限制的美国Shenhuo小组[translate] ...
APPARENT DEPTH The letter from R M Helsdon (Phys. Educ. 1977 12 67) rejects the usual derivation of the formula for apparent depth on the assumption that no perception of distance is possible with monocular vision. There are in fact various mechanisms by means of which a single eye can ...