how to calculate pvifa and pvif?
311647
['Convert 12% into decimal part = 12/100 = 0.12.', 'Add 1 to it = 0.12 + 1 = 1.12.', 'Now, just press “1/1.12” and press “=” as many times as the number of years (here 4 times)', 'You got the answer (PVIF) – 0.6355. ... ', 'Press the GT (Grand Total) button on the Top Left side.', 'You got the answer (PVIFA) – 3.0373.']
1186907
The most easiest way is to connect a power pactor meter in the circuit where you wish to calculate the phase difference. After measuring the pf, take the inverse cosine of this value in degrees. Depending on lag/lead pf, phase varies. If you have leading pf, current leads voltage by that calculated angle.
9387
['You invest $500 now, so PV = −$500.00.', 'PV = $518.18 (to nearest cent)', 'Net Present Value = $518.18 − $500.00 = $18.18.']
407440
In other words, volt-amps x power factor = watts. Similarly, KVA*PF = KW, Or kilovolt-amps times power factor equals kilowatts. When you want to know how much the electricity is costing you, you use watts.
175614
PV = FV/(1+r)n. PV = Present value, also known as present discounted value, is the value on a given date of a payment. FV = This is the projected amount of money in the future. r = the periodic rate of return, interest or inflation rate, also known as the discounting rate.
106549
['the peak to peak voltage = 6 squares from the highest point to the lowest and each square is worth 10V. So the peak to peak voltage = 60 V.', 'the peak voltage ( Vo )= half the peak to peak voltage = 60 / 2 = 30 V.']
590212
['E = emissions;', 'A = activity rate;', 'EF = emission factor, and.', 'ER =overall emission reduction efficiency, %']
317424
['Contribution Margin = Net Sales – Total Variable Expenses.', 'Contribution Margin = Contribution Margin per Unit * No. of Unit Sold.', 'Contribution Margin = Fixed Cost + Net Profit.']
1359070
['Fan Load= No x Watt =2×60=120 Watt.', 'Fan Load=(No x Watt)/P.F=(2×60)/0.8= 150VA.', 'Computer Load= No x Watt =1×200=200 Watt.', 'Computer Load=(No x Watt)/P.F =(1×200)/0.8= 250VA.', 'Tube Light Load= No x Watt =2×30=60 Watt.', 'Tube Light Load=(No x Watt)/P.F =(2×30)/0.8= 75VA.', 'Total Electrical Load=120+200+60 =380 Watt.']
9239
['Device Wattage (watts) x Hours Used Per Day = Watt-hours (Wh) per Day.', 'Device Usage (Wh) / 1000 (Wh/kWh) = Device Usage in kWh.', 'Daily Usage (kWh) x 30 (Days) = Approximate Monthly Usage (kWh/Month)']
637290
['gh=ΘA(xs−x)', 'gh = amount of evaporated water per hour (kg/h)', 'Θ=(25+19v) = evaporation coefficient (kg/(m2 h))', 'v = velocity of air above the water surface (m/s)', 'A = water surface area (m2)']
1326446
['rate - The interest rate per period.', 'per - The payment period of interest.', 'nper - The total number of payment periods.', 'pv - The present value, or total value of all payments now.', 'fv - [optional] The cash balance desired after last payment is made. Defaults to 0.', 'type - [optional] When payments are due.']
609889
The formula for present value is PV = FV ÷ (1+r)^n; where FV is the future value, r is the interest rate and n is the number of periods. Using information from the above example, PV = 10,000÷(1+. 03)^5, or $8,626.09, which is the amount you would need to invest today.
1031321
['Quarterly Compounding: FV = $10,000 x (1 + (10% / 4) ^ (4 x 1) = $11,038.', 'Monthly Compounding: FV = $10,000 x (1 + (10% / 12) ^ (12 x 1) = $11,047.']
34913
['Average Velocity. va = (v1 + v0) / 2 (1) ... ', 'Final Velocity. v1 = v0 + a t                   (2) ... ', 'Distance Traveled. s = (v0 + v1) t / 2 (3) ... ', 'Acceleration. a = (v1 - v0) / t (4) ... ', 'Example - Accelerating Motorcycle.']
1338950
By the formula, 1/(1-. 1707) = 1.21, our VIF. If you take the square root of the variance inflation factor, that value tells you how much larger the standard error is compared to if that predictor was uncorrelated with any other predictor.
749980
['Children PEFR = ((Height in cm - 100) x 5) + 100.', 'Adult Men = (((Height in m x 5.48) + 1.58) - (Age x 0.041)) x 60.', 'Adult Women = (((Height in m x 3.72) + 2.24) - (Age x 0.03)) x 60.']