NOCTI MECHATRONICS CORRECT EXAMS ANSWERS
AND QUESTIONS SET A+
✔✔How do you convert fractions to decimals on a standard ruler? - ✔✔Divide the
fraction by the denominator and add to the whole number.
✔✔What are the markings on a metric ruler? - ✔✔Millimeters and centimeters.
✔✔How do you read a measurement on a metric ruler? - ✔✔Align object with zero mark
and look for line that aligns with other edge.
✔✔How do you convert millimeters to centimeters on a metric ruler? - ✔✔Divide by 10.
✔✔How do you convert centimeters to millimeters on a metric ruler? - ✔✔Multiply by 10.
✔✔Why is it important to take safety precautions when diagnosing electrical
components? - ✔✔To avoid injury or damage to equipment.
✔✔What are some steps to safely diagnose electrical components? - ✔✔Turn off
power, inspect for damage, use a multimeter, test for continuity, test for voltage, check
the wiring, replace damaged components.
✔✔What is the first step before beginning any electrical work? - ✔✔Turn off power
✔✔What should you inspect for before beginning electrical work? - ✔✔Damage
✔✔What is a multimeter? - ✔✔Tool to measure electrical properties
✔✔What is continuity testing? - ✔✔Checking if circuit is complete or broken
✔✔What should you test for with the power on? - ✔✔Voltage
,✔✔What should you check for in the wiring? - ✔✔Loose connections or damaged
insulation
✔✔What should you do with damaged components? - ✔✔Replace them
✔✔What should you align with one side of the angle when measuring angles? -
✔✔Base of the protractor
✔✔How do you check if a surface is square? - ✔✔Use a square and check if both
edges are flush
✔✔What is a level? - ✔✔A tool used to check for levelness.
✔✔What is a plumb? - ✔✔A tool used to check for verticality.
✔✔How do you use a plumb? - ✔✔Observe which way it hangs.
✔✔How do you adjust a surface using a plumb? - ✔✔Hold the plumb line against the
surface you want to check for verticality.
Allow the plumb line to hang freely and observe which way it hangs.
Adjust the surface until the plumb line is hanging directly over the center of the mark
you want to measure.
✔✔What is a circuit? - ✔✔A closed path for electricity.
✔✔What is voltage? - ✔✔Electric potential energy per unit charge.
✔✔What is current? - ✔✔Flow of electric charge in a circuit.
✔✔What is resistance? - ✔✔Opposition to flow of electric current.
✔✔What is Ohm's Law? - ✔✔I = V/R; current is proportional to voltage and inversely
proportional to resistance.
✔✔What is a series circuit? - ✔✔Components connected end-to-end.
✔✔What is a parallel circuit? - ✔✔Components connected side-by-side.
✔✔What is ground? - ✔✔Point in circuit with zero voltage.
✔✔What is a short circuit? - ✔✔Low-resistance path causing large current flow.
✔✔What is an open circuit? - ✔✔Break in path of current.
, ✔✔What are toggle switches? - ✔✔Switches with a lever for on/off.
✔✔What are rocker switches? - ✔✔Rectangular switches used in cars and boats.
✔✔What are push button switches? - ✔✔Switches activated by pressing a button.
✔✔What are rotary switches? - ✔✔Switches with a rotating dial.
✔✔What are slide switches? - ✔✔Switches with a sliding lever.
✔✔What are DIP switches? - ✔✔Small switches used in electronic circuits.
✔✔What are reed switches? - ✔✔Switches activated by a magnetic field.
✔✔What are mercury switches? - ✔✔Switches activated by tilting and using mercury.
✔✔What are membrane switches? - ✔✔Thin, flexible switches used in consumer
electronics.
✔✔What are micro switches? - ✔✔Small switches with a spring-loaded lever.
✔✔What is KCL? - ✔✔Kirchhoff's first law - sum of currents entering a junction equals
sum of currents leaving.
. In other words, the total current flowing into a node must equal the total current flowing
out of that node. This law is based on the principle of conservation of charge.
Mathematically, KCL can be expressed as:
ΣI(in) = ΣI(out)
✔✔What is KVL? - ✔✔Kirchhoff's second law - sum of voltages around a closed loop
equals zero.
In other words, the algebraic sum of voltage rises and voltage drops in a closed loop
must be equal to zero. This law is based on the principle of conservation of energy.
Mathematically, KVL can be expressed as:
ΣV = 0
✔✔What is the principle behind KCL? - ✔✔Conservation of charge.
✔✔What is the principle behind KVL? - ✔✔Conservation of energy.
✔✔What is the mathematical expression for KCL? - ✔✔ΣI(in) = ΣI(out)
✔✔What is the mathematical expression for KVL? - ✔✔ΣV = 0
AND QUESTIONS SET A+
✔✔How do you convert fractions to decimals on a standard ruler? - ✔✔Divide the
fraction by the denominator and add to the whole number.
✔✔What are the markings on a metric ruler? - ✔✔Millimeters and centimeters.
✔✔How do you read a measurement on a metric ruler? - ✔✔Align object with zero mark
and look for line that aligns with other edge.
✔✔How do you convert millimeters to centimeters on a metric ruler? - ✔✔Divide by 10.
✔✔How do you convert centimeters to millimeters on a metric ruler? - ✔✔Multiply by 10.
✔✔Why is it important to take safety precautions when diagnosing electrical
components? - ✔✔To avoid injury or damage to equipment.
✔✔What are some steps to safely diagnose electrical components? - ✔✔Turn off
power, inspect for damage, use a multimeter, test for continuity, test for voltage, check
the wiring, replace damaged components.
✔✔What is the first step before beginning any electrical work? - ✔✔Turn off power
✔✔What should you inspect for before beginning electrical work? - ✔✔Damage
✔✔What is a multimeter? - ✔✔Tool to measure electrical properties
✔✔What is continuity testing? - ✔✔Checking if circuit is complete or broken
✔✔What should you test for with the power on? - ✔✔Voltage
,✔✔What should you check for in the wiring? - ✔✔Loose connections or damaged
insulation
✔✔What should you do with damaged components? - ✔✔Replace them
✔✔What should you align with one side of the angle when measuring angles? -
✔✔Base of the protractor
✔✔How do you check if a surface is square? - ✔✔Use a square and check if both
edges are flush
✔✔What is a level? - ✔✔A tool used to check for levelness.
✔✔What is a plumb? - ✔✔A tool used to check for verticality.
✔✔How do you use a plumb? - ✔✔Observe which way it hangs.
✔✔How do you adjust a surface using a plumb? - ✔✔Hold the plumb line against the
surface you want to check for verticality.
Allow the plumb line to hang freely and observe which way it hangs.
Adjust the surface until the plumb line is hanging directly over the center of the mark
you want to measure.
✔✔What is a circuit? - ✔✔A closed path for electricity.
✔✔What is voltage? - ✔✔Electric potential energy per unit charge.
✔✔What is current? - ✔✔Flow of electric charge in a circuit.
✔✔What is resistance? - ✔✔Opposition to flow of electric current.
✔✔What is Ohm's Law? - ✔✔I = V/R; current is proportional to voltage and inversely
proportional to resistance.
✔✔What is a series circuit? - ✔✔Components connected end-to-end.
✔✔What is a parallel circuit? - ✔✔Components connected side-by-side.
✔✔What is ground? - ✔✔Point in circuit with zero voltage.
✔✔What is a short circuit? - ✔✔Low-resistance path causing large current flow.
✔✔What is an open circuit? - ✔✔Break in path of current.
, ✔✔What are toggle switches? - ✔✔Switches with a lever for on/off.
✔✔What are rocker switches? - ✔✔Rectangular switches used in cars and boats.
✔✔What are push button switches? - ✔✔Switches activated by pressing a button.
✔✔What are rotary switches? - ✔✔Switches with a rotating dial.
✔✔What are slide switches? - ✔✔Switches with a sliding lever.
✔✔What are DIP switches? - ✔✔Small switches used in electronic circuits.
✔✔What are reed switches? - ✔✔Switches activated by a magnetic field.
✔✔What are mercury switches? - ✔✔Switches activated by tilting and using mercury.
✔✔What are membrane switches? - ✔✔Thin, flexible switches used in consumer
electronics.
✔✔What are micro switches? - ✔✔Small switches with a spring-loaded lever.
✔✔What is KCL? - ✔✔Kirchhoff's first law - sum of currents entering a junction equals
sum of currents leaving.
. In other words, the total current flowing into a node must equal the total current flowing
out of that node. This law is based on the principle of conservation of charge.
Mathematically, KCL can be expressed as:
ΣI(in) = ΣI(out)
✔✔What is KVL? - ✔✔Kirchhoff's second law - sum of voltages around a closed loop
equals zero.
In other words, the algebraic sum of voltage rises and voltage drops in a closed loop
must be equal to zero. This law is based on the principle of conservation of energy.
Mathematically, KVL can be expressed as:
ΣV = 0
✔✔What is the principle behind KCL? - ✔✔Conservation of charge.
✔✔What is the principle behind KVL? - ✔✔Conservation of energy.
✔✔What is the mathematical expression for KCL? - ✔✔ΣI(in) = ΣI(out)
✔✔What is the mathematical expression for KVL? - ✔✔ΣV = 0
