FCC Grol element 3 Test Questions And Answers

FCC Grol element 3 Test Questions And Answers What is the basic unit of electrical power? A. Ohm B. Watt C. Volt D. Ampere - ANSWER- B. Watt What is the term used to express the amount of electrical energy stored in an electrostatic field? A. Joules B. Coulombs. C. Watts. D. Volts - ANSWER- A. Joules What will produce a magnetic field? A. DC source not connect to a circuit B. The presence of a voltage across a capacitor. C. A current flowing through a conductor. D. The force that drives current through a resistor. - ANSWER- C. A current flowing through a conductor. What is meant by the term "back emf"? A. A current equal to the applied EMF. B. An opposing EMF equal R times C (RC) percent of the applied EMF. C. A voltage that opposes the applied EMF D. A current that opposes the applied EMF - ANSWER- C. A voltage that opposes the applied EMF Which metal object may be least affected by galvanic corrosion what submerged in saltwater? A. Aluminum outdrive B. Bronze through-hull C. Exposed lead keel D. Stainless steel propeller shaft. - ANSWER- D. Stainless steel propeller shaft. Corrosion resulting from electric current flow between dissimilar metals is called: A. Electrolysis B. Stray current corrosion C. Oxygen starvation corrosion D. Galvanic corrosion - ANSWER- D. Galvanic corrosion Good conductors with minimum resistance have what type of electrons? A. Few free electrons B. No electrons C. Some free electrons D. Many free electrons - ANSWER- D. Many free electrons Which of the 4 groups of metals listed below are the best low-resistance conductors? A. Gold, silver, and cooper B. Stainless steel, bronze, and lead C. Iron, lead, and nickel D. Bronze, zinc, and manganese - ANSWER- A. Gold, silver, and cooper What limits maximum forward current in a junction diode? A. The peak inverse voltage (PIV) B. The junction temperature C. The foward voltage. D. The back EMF - ANSWER- B. The junction temperature MOSFETs are manufactured with THIS protective device built into their gate to protect the device from static charges and excessive voltages: A. Schottky B. Metal oxide varistor C. Zener diode D. Tunnel diode - ANSWER- C. Zener diode An AC ammeter indicates: A. Effective (TRM) values of current. B. Effective (RMS) values of current. C. Peak values of current. D. Average values of current. - ANSWER- B. Effective (RMS) values of current. By what factor must the voltage of an AC circuit, as indicated on the scale of an AC voltmeter, bu multiplied to obtain the