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WorksheetsIDA-101 Final Exam Review (CRF) 3/19
Total questions: 25
Worksheet time: 13mins
Ammeters are used to measure the intensity of current flow in a circuit or a particular branch in a circuit, so they are wired in series with the circuit being evaluated.
True
False
German scientist George S. Ohm did considerable experimentation with electrical circuits. He determined that a relationship exists among the voltage, current, resistance, and power in an electrical circuit.
George S. Ohm
George S. Patton
George S. Steinbrenner
George S. Costanza
The voltage is divided across the different resistances.
Series Circuit
Parallel Circuit
Series-Parallel Circuit
None are true
When current flows through a conductor, a magnetic field is produced around the conductor.
True
False
Matter is made up of _____, which are the smallest amounts of a substance that can exist.
atoms
protons
neutrons
electons
include overcurrent protective and switching devices for branch circuits.
Panelboards
Breakers
Wires
Transformers
Conductor material can be ___, aluminum, or copper-clad aluminum.
copper
iron
steel
optical fiber
___ are caused by lightning strikes, unfiltered electrical equipment, contact bounce, arcing, and high-current loads being switched on and off.
Frequency variation
Power Factor
Ghost voltages
Transient voltages
The “_______” states that like charges repel each other and unlike or opposite charges attract each other.
law of charges
law of attraction
law of compound
law of motion
Insulators are substances that are made up of atoms with several electrons in their outermost shell, making them poor conductors. The valence electrons are difficult to free, making it very difficult for the electrons to move from one atom to another.
True
False
What is a grounding electrode conductor?
a conductor that connects a grounding system to a buried grounding electrode
a conductor that connects an electrical system to a buried grounding electrode
a conductor that connects an electrical system to a buried transformer electrode
an insulator that connects an electrical system to a buried transformer electrode
A devise that prevents conductors or devises from reaching excessively high temperatures from high currents by opening the circuit.
Over Current Protection Device
Over Current Device
Over Voltage Protection Device
Over Voltage Device
What is meant by 60 hertz AC current?
The current makes a complete reversal of direction 60 times per second.
The current makes a complete reversal of direction 60 times per mega second.
The current makes a complete reversal of direction 60 times per minute
The current makes a complete reversal of direction 60 times per millisecond.
What is a resistor whose resistance changes with a change in temperature?
Thermistor
Thermometer
Diode
Tri-axel, inverted, triple insulated, flux resistor
If there was a current flow of 6 A in a 120-V circuit, the resistance of the circuit would be ____________________ Ω.
20
24
126
702
Ammeters are used to measure the intensity of current flow in a circuit or a particular branch in a circuit, so they are wired in series with the circuit being evaluated.
True
False
What is a Stinger/Wild Leg and Why is identified with orange coloring?
Orange
Orange and Black
Blue
Yellow and Black
What is thermal overload?
The ______ is a type of electromagnet, the purpose of which is to generate a controlled magnetic field through a coil wound into a tightly packed helix.
solenoid
relay
contactor
transformer
What is a magnetic starter?
A magnetic motor starter is an electromagnetically operated device that starts and stops a connected motor load. Magnetic starters consist of an electrical contactor and an overload, which protects in case of a sudden loss of power.
A magnetic motor starter is an electronic operated device that starts and stops a connected motor load. Magnetic starters consist of an electrical contactor and an overload, which protects in case of a sudden loss of power.
A magnetic motor starter is an electromagnetically operated device that starts and stops a connected motor load. Magnetic starters consist of an electrical switch and an overload, which protects in case of a sudden loss of power.
A magnetic motor starter is an mechanically operated device that starts and stops a connected motor load. Magnetic starters consist of an electrical contactor and an overload, which protects in case of a sudden loss of power.
A(n) ___ is used for monitoring or changing system variables, making control decisions, and interfacing with other types of systems.
relay
actuator
temperature sensor
control device
Human-machine interfaces are either hardware-based or ___-based.
open-loop
closed-loop
software
derivative
A(n) ___ is a sequence of instructions for producing the optimal result to a problem.
building automation system
protocol
relay
A ____ control can be used to prevent a water temperature from exceeding 210°F.
setback
lead/lag
high-limit
reset
A(n) ____ table prioritizes the order in which electrical loads are turned OFF.
rotating priority load
availability
electrical demand
shed
