Basic Mathematics for Television and RadioPrentice-Hall, 1953 - 405 σελίδες |
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Σελίδα 79
... ohms T = internal resistance of cell in ohms A one - cell storage battery having a voltage of 2.2 and an internal resistance of 0.15 ohm can light a radio tube which , together with the connecting wires , has a resistance of 34 ohms ...
... ohms T = internal resistance of cell in ohms A one - cell storage battery having a voltage of 2.2 and an internal resistance of 0.15 ohm can light a radio tube which , together with the connecting wires , has a resistance of 34 ohms ...
Σελίδα 140
... ohms . Expressed in symbols , this formula is where E I E = IR = electromotive force = R = intensity of current resistance If I = 3 and R 7. If E = 220 and R = = 40 , what is E ? 456 , how much current flows ? 8. If the current is 0.25 ...
... ohms . Expressed in symbols , this formula is where E I E = IR = electromotive force = R = intensity of current resistance If I = 3 and R 7. If E = 220 and R = = 40 , what is E ? 456 , how much current flows ? 8. If the current is 0.25 ...
Σελίδα 141
... ohms each , in series , across 550 volts ? 16. How much line current flows through a 660 - watt heater of 120 volts ... ohms . If 6 radio tubes are connected in parallel across a 6.3 - volt battery , and each has a filament resistance of ...
... ohms each , in series , across 550 volts ? 16. How much line current flows through a 660 - watt heater of 120 volts ... ohms . If 6 radio tubes are connected in parallel across a 6.3 - volt battery , and each has a filament resistance of ...
Περιεχόμενα
CHAPTER PAGE 1 ADDITION SUBTRACTION MULTIPLICATION AND DIVISION IN ARITHMETIC | 3 |
DEFINITIONS AND SYMBOLS | 12 |
INVOLUTION AND EVOLUTION IN ARITHMETIC | 15 |
Πνευματικά δικαιώματα | |
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algebraic angle answer applied arithmetic Axiom base called Chapter Check circle circuit circumference coefficient common complex condition Construct COROLLARY curve decimal definition denominator difference direction distance divided division Draw drawn electrical engineering equal equation example exponent expression fact factor figure formula fraction frequency functions geometry given greater illustrated inches indicated involved length letters logarithms magnitude mathematical means measure method Multiply necessary negative Note obtained ohms operation parallel perpendicular places polygon positive possible practice Problems Prove quadratic quantity quotient radio radius ratio represented resistance result right angle root rule shown sides similar Simplify sine solution Solve square statement straight line substituted subtract Theorem triangle unit unknown usually vertical voltage volts wave zero