MECHATRONICS UPDATED REVISION TEST QUESTIONS
AND SOLUTIONS RATED A+
✔✔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
✔✔What is another name for KCL? - ✔✔Kirchhoff's first law.
✔✔What is another name for KVL? - ✔✔Kirchhoff's second law.
✔✔What is a DC power supply? - ✔✔Provides constant voltage output
✔✔What is an AC power supply? - ✔✔Provides an AC voltage output
✔✔What is a switching power supply? - ✔✔Converts input power to regulated DC
output through high-frequency switching
✔✔What is a linear power supply? - ✔✔Regulates output voltage by dissipating excess
power as heat
✔✔What is a battery power supply? - ✔✔Portable power supply that stores chemical
energy and converts it into electrical energy
✔✔What are some applications of DC power supplies? - ✔✔Computers, televisions,
radios
✔✔What are some applications of AC power supplies? - ✔✔Motor drives, HVAC
systems, industrial machinery
✔✔What are some applications of switching power supplies? - ✔✔Consumer
electronics, telecommunications, industrial applications
✔✔What are some applications of linear power supplies? - ✔✔Audio equipment,
laboratory instruments, analog circuits
AND SOLUTIONS RATED A+
✔✔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
✔✔What is another name for KCL? - ✔✔Kirchhoff's first law.
✔✔What is another name for KVL? - ✔✔Kirchhoff's second law.
✔✔What is a DC power supply? - ✔✔Provides constant voltage output
✔✔What is an AC power supply? - ✔✔Provides an AC voltage output
✔✔What is a switching power supply? - ✔✔Converts input power to regulated DC
output through high-frequency switching
✔✔What is a linear power supply? - ✔✔Regulates output voltage by dissipating excess
power as heat
✔✔What is a battery power supply? - ✔✔Portable power supply that stores chemical
energy and converts it into electrical energy
✔✔What are some applications of DC power supplies? - ✔✔Computers, televisions,
radios
✔✔What are some applications of AC power supplies? - ✔✔Motor drives, HVAC
systems, industrial machinery
✔✔What are some applications of switching power supplies? - ✔✔Consumer
electronics, telecommunications, industrial applications
✔✔What are some applications of linear power supplies? - ✔✔Audio equipment,
laboratory instruments, analog circuits
