NCCER Electrical module 3 Practice Test with Complete Solution

NCCER Electrical module 3 Practice Test with Complete Solution a circuit has a source voltage of 50v and a current of 10A, what is the power in watts? - 500w voltage is defined as the? - driving force that makes current flow in a circuit if a curcuit has 12 amps of current and the resistance is 20 ohms, the applied voltage is? - 240 volts if two 10 ohm resistors are connected in series, what is the total resistance of the resistors? - 20 ohms to make sure the voltage is turned off before touching any terminals, use a? - voltage tester how many amos are there in the current of a circuit if the voltage source is 140v and the resistance is 2 omhs - 70 materials with electrical characteristics that fall between those of insulators and conductors are considered? - semiconductors what is the applied voltage if the current in a circuit is 60 amps and the resistance is 10 ohms - 600 volts which of the following is used to step voltage down to lower levels before it reaches a home or office? - transformers a 5ohm and 20 ohm resistor are connected in parallel, what is the total resistance of these two resitors? - 4 ohms if the resitors of a circuit is 20 ohms and the current is 10 amps, the power in watts is? - 2500 watts if a circuit has 48 amps of current and applied voltage of 240 volts, the resistance is? - 50 ohms you would measure resistance with a? - ohm meter which of the following substances is considered a good semiconductor. - silicon in a parallel circuit, the voltage drop? - is the same across all loads an electronic repels? - other electrons electric charge is measured in? - Coulombs a mil is equal to? - 0.001 inch a resitor has no further band, this indicates that the resitor tolerance is? - +- 20 Voltmeter - A high resistance is connected in series with the internal coil of a galvanometer to make? If a transformer ratio is 20/1, what does it mean for the secondary? - The primary voltage is 20 times greater than that of the secondary. If a motor enclosure is designed to contain sparks or flashes that could ignite surrounding vapors or gases, then the enclosure is considered to be which of the following: - Ventilated The output of a 3-phase transformer is measured in what units? - Amperes