ABYC Electrical Exam Complete Questions and Solutions!!

Which tool is most approprite to clean battery connections? A. B. C. D. - ANSWER The minimum amp circuit breaker that should be used to protect 120V water heater circuit with a 1600-watt element would be rated at _________ amps. A. 15 B. 10 C. 20 D. 30 - ANSWER A. 15 When testing for excessive EMF emissions near a conductor or appliance, the tool of choice is a(an): A. Ohmmeter B. DVOM C. Gauss meter D. infrared sensor - ANSWER C. Gauss meter The primary problem with using a series circuit to supply multiple loads is that: A. voltage drop will be excessive B. the capacitance will be excessive C. amperage draw will be multiplied D. the overcurrent protection device may not work - ANSWER A. voltage drop across each load will be excessive The most common electrical circuit problem in a marine application is: A. short circuits B. too much continuity C. unwanted open D. intercircuit short - ANSWER C. unwanted open The primary by-product of excessive electrical resistance is: A. increased amperage B. increased voltage C. reduced ambient temperature D. heat - ANSWER D. heat One horsepower equals ______. A. 1000 watts B. 746 watts C. 536 watts D. 146 watts - ANSWER B. 746 watts Excessive electrical resistance can be caused by __________. A. oversized conductors, loose terminals, and corrosion. B. improper wire insulation and excessive wire strand count. C. fuses with too high of a rating and wattage that is too low. D. undersized wire, loose connections, and corrosion. - ANSWER D. undersized wire, loose connections, and corrosion. The tool of choice for tracing shorted and open circuits is the: A. Megohmeter B. Amp clamp C. potential meter D. TDR - ANSWER D. TDR What material is recommended for clamping conductors over engines and moving machinery according to ABYC? A. PVC B. Nylon C. Metal D. Any of the above material - ANSWER C. Metal According to ABYC, acceptable minimum clearance for routing wire near a dry exhaust section is: A. 2 in B. 9 in. C. 3 in D. 7 in - ANSWER B 9 in The maximum number of terminals allowed to be attached to any one terminal stud based on ABYC is: A. 1 B. 2 C. 3 D. 4 - ANSWER D. 4 How much current should flow through the DC grounding conductor in a 25 amp DC motor circuit? A. 25 amps B. 0 amps C. 10 amps D. 5 amps - ANSWER B. 0 amps Conductor of 10 AWG and larger shall be permitted to be connected in parallel__________. A. in any circumstance