HVAC Level 1 Module 3 Electricity Questions with Corrects A+

Electrons flow from __________ to ____________. - negative, postitive What is the better conductor of electricity? Copper, Gold, oil, or aluminum - gold One horsepower equals ____________. - 746 watts Transformers are used to lower voltages because very _____ voltages can be transmitted easier and cheaper than 240 volts. - high High voltage is defined as above ____ volts. - 600 Effective voltage is defined as what percent of peak voltage? - 70.7% Formula to find voltage? - E = I X R Formula to find current? - I = E/R Formula to find resistance? - R = E/I Current uses _____? - amperes Resistance uses ____? - Ohms Voltage uses _____.? - Volts Formula for total resistance with two resitances? - TR = R1 X R2/ R1 + R2 Formula for total resistance with 3 or more resistances? - TR = 1/(1/R1) + (1/R2) + (1/R3) The kind of electricity produced by a battery is known as _______________. - direct current(DC) The electricity supplied by the local utility is _____________? - alternating current(AC) Device that is used to convert AC power to DC power? - rectifier