ESCO ELECTRICAL CERTIFICATION STUDY GUIDE LATEST PRACTICE PROBLEMS AND COMPLETE ACCURATE ANSWERS GUARANTEED PASS

ESCO ELECTRICAL CERTIFICATION STUDY
GUIDE LATEST PRACTICE PROBLEMS AND
COMPLETE ACCURATE ANSWERS
GUARANTEED PASS

⩥ Protons are.
Answer: Positively charged particles located in the center of the atom


⩥ Electrical conductors listed in order of best to worst are.
Answer: Gold, silver, copper, aluminum


⩥ Good electrical insulators include.
Answer: Ceramic, rubber, and plastic


⩥ What material are most of the wires in your house made of.
Answer: Copper


⩥ The electromotive force that causes electrons to move along a
conductor is called.
Answer: Voltage


⩥ Electrical potential is measured in.

,Answer: Volts


⩥ Electrical current is measured in.
Answer: Amps


⩥ Electrical power is measured in.
Answer: Watts


⩥ Electric current that regularly reverses direction is called.
Answer: Alternating current


⩥ Electric current that flows in only one direction is called.
Answer: Direct current


⩥ Alternating current frequency is measured in.
Answer: Hertz (Hz)


⩥ One hertz (Hz) is equivalent to.
Answer: one cycle per second


⩥ The number of cyclic wave forms present at one time in an AC circuit
is called.

, Answer: Phase


⩥ Alternating current is typically available in.
Answer: single phase and three phase


⩥ Electrical resistance is measured in.
Answer: Ohms


⩥ In an electrical circuit, resistance is.
Answer: opposition to the flow of electricity


⩥ The three essential requirements for a useful electric circuit are.
Answer: A power source, a path for current flow, and an electrical load


⩥ What are the most common loads in HVACR systems.
Answer: Motors


⩥ An electric circuit that contains a source and path without a load is
called.
Answer: A short circuit


⩥ An electric circuit without a complete path is called.