Handbook of Applied MathematicsEdward E. Grazda, Morris Brenner Van Nostrand, 1955 - 1044 σελίδες Original work by Martin E. Jansson, Herbert D. Harper, Peter L. Agnew. |
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Σελίδα 711
... watts ( Ans . ) ILLUSTRATION : An electric light has a resistance of 121 ohms and uses 0.909 ampere . How many watts does it use ? P = I2R = 0.909 X 0.909 × 121 = 100 watts ( Ans . ) Given resistance and pressure , to find the watts ...
... watts ( Ans . ) ILLUSTRATION : An electric light has a resistance of 121 ohms and uses 0.909 ampere . How many watts does it use ? P = I2R = 0.909 X 0.909 × 121 = 100 watts ( Ans . ) Given resistance and pressure , to find the watts ...
Σελίδα 760
... watts . ( 1 ) What is the efficiency ? E & Armature current = I = r 110 - 100 0.2 = 50 amperes Field current - I ... watts P = EXI = 110 X 2.75 = 302.5 watts Stray power loss = 300 watts Total loss = 500 + 302.5 + 300 = 1102.5 watts ...
... watts . ( 1 ) What is the efficiency ? E & Armature current = I = r 110 - 100 0.2 = 50 amperes Field current - I ... watts P = EXI = 110 X 2.75 = 302.5 watts Stray power loss = 300 watts Total loss = 500 + 302.5 + 300 = 1102.5 watts ...
Σελίδα 793
... watts = 1500 watts = 12,900 watts Demand selected for this occupancy , first 3000 square feet demand 100 percent ; excess over 3000 square feet 35 percent . Then 3000 sq . ft . at 3 watts per sq . ft . × 1 800 sq . ft . at 3 watts per ...
... watts = 1500 watts = 12,900 watts Demand selected for this occupancy , first 3000 square feet demand 100 percent ; excess over 3000 square feet 35 percent . Then 3000 sq . ft . at 3 watts per sq . ft . × 1 800 sq . ft . at 3 watts per ...
Περιεχόμενα
SECTION PAGE I INTRODUCTIONHOW TO USE THIS BOOK | 1 |
ARITHMETICSLIDE RULE | 4 |
ALGEBRA | 93 |
Πνευματικά δικαιώματα | |
23 άλλες ενότητες δεν εμφανίζονται
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
alternating current amperes angle armature base called cells circle circuit circular mils circumference coefficient coil column Common Logarithms concrete copper cosec Cosine Cotang Cotang Tang Cube cubic feet decimal dimensions direct current distance divided electrical electromotive force equal Ex.-Log excavation factor figure fixtures floor foot formula fraction gallons Gear on Stud Gypsum Header heat Hole hypotenuse ILLUSTRATION Insulating joints joists kc kc length load logarithms machine magnetic magnetomotive force measured Metal Lath mortar motor multiplied Ohm's Law ohms parallel pipe pitch diameter Plaster pounds quantity radiation radius rafters reactance resistance revolutions per minute roof screw shafts sheets shown in Fig sides Sine specific gravity square feet square inches square root steel surface TABLE TANGENTS tank taper temperature thick thread triangle tube unit voltage volts wall watts weight width wire worm yards