WITH CORRECT ANSWERS GRADED A+
◍ NEC blue/white wire voltage:.
Answer: DC common for DC distribution
◍ Design Issues w Ac vs DC.
Answer: DC voltages are usually lower for safetyAC req longer time due to
noise filteringnever exceed rated voltagesAC easier and less expensiveAC
common DC preferred
◍ quasiequilibrium process.
Answer: a process in which the departure from thermodynamic equilibrium
is at a minimum
◍ Ladder Diagrams.
Answer: most popular in NATypically most understandable by
electriciansvariables defined with tag editor
◍ Vapor Power vs Gas Power Cycles.
Answer: In vapor power cycles, the working fluid undergoes a phase
change, typically between liquid and vapor. These cycles are commonly
used in systems like steam power plants. In gas power cycles, the working
fluid remains in the gaseous phase throughout the entire cycle—no phase
changeoccurs.
◍ NEC green or green/yellow wire voltage:.
Answer: ground
◍ Instruction Lists.
Answer: mostly obsoletevariables defined with tag editor
◍ What are ALL the specialty I/O requirements.
Answer: PTOEncoderPIDAnalog OutputServoNOT:Digital Input, Relay
, output
◍ control volume (open system).
Answer: a region of space through which mass may flow; examples: human
being, fridge
◍ Wire types.
Answer: MTW - insideTHHN - outsideSO/STO - high
voltagemulticonductor - ethernet
◍ NEC brown wire voltage:.
Answer: sensor DC+
◍ What is the main goal of an HMI?.
Answer: Reduce uncertaintyBest HMI design:Maximize transfer of info,
simple, diagrams, intuitive, predicts user mistakes, consistent
◍ regular coefficient of performance for a heat pump cycle (γ).
Answer: Qout / W = Qout / (Qout - Qin)
◍ Incompressible substance model (compressed liquid approximation).
Answer: v1(T1, p1) = vf(T1), u1(T1, p1) = uf(T1, p1), h1(T1, p1) = hf(T1)
◍ thermodynamic state.
Answer: the condition of a system as described by its properties
◍ Analog considerations.
Answer: EMI/noiseconversion rate (delay)multiplexingsignal conditions
(amplify sig)resistancesingle/double ended inputs
◍ Bright field, dark field, back, diffused dome, and axial diffuse are all type
of.
Answer: Lighting
◍ Invention of the PLC is commonly attribute to?.
Answer: Richard Morley
◍ regular coefficient of performance for a refrigeration cycle (β).
Answer: Qin / W = Qin / (Qout - Qin)
, ◍ Entropy.
Answer: In thermodynamics, entropy is a measure of the amount of energy
in a system that is unavailable to do useful work. It also quantifies the
degree of disorder or randomness in a system.
◍ thermal efficiency of a regular power cycle (η).
Answer: W / Qin = (Qin - Qout) / Qin = 1 - Qout / Qin
◍ Inductive prox.
Answer: detect ferrous metal, creates electomag field, Turck
◍ isothermal process.
Answer: a process with constant temperature
◍ Which timers are non-retentive?.
Answer: TOF TONNOT: RTO, CTD, CTU
◍ Isentropic.
Answer: Isentropic refers to a process in which the entropy remains constant
throughout the process. An isentropic process is a reversible adiabatic
process, meaning that no heat is exchanged with the surroundings and no
entropy is generated within the system.
◍ internal energy (U).
Answer: ΔE - ΔPE - ΔKE = Q - W
◍ A through beam photo eye configuration is also called.
Answer: opposed
◍ Lab Specs.
Answer: Lab Flex I/O: 12 bit Resolution: 4096Lab A/D converter is 12 bit,
11 bipolar (2^bit)Temp: Highest operating temperature of Interior of
enclosure is 130deg F (55degC) will failShock: 50GVibration: 5GWire size:
12 gaugeLow sampling frequencies cause signal aliasingWant to avoid large
differentials in circuit*general: 5 lb of stuff in a 10lb box will overheat
◍ Rockwell Automation/Allen Bradley softwares in lab:.
Answer: Studio 5000 launches:- RSLogix5000 / Logix Designer- Factory