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What is the function of a Four-Layer Diode (Shockley Diode)?

• Amplification

• Rectification

• Oscillation

• Modulation

Which region of operation does a Diode for AC (DIAC) conduct current in?

• Forward blocking region

• Forward conducting region

• Reverse conducting region

• Reverse blocking region

How many terminals does a Silicon Controlled Rectifier (SCR) have?

• Two

• Four

• Five

• Three

What is the main advantage of a TRIAC over an SCR?

• Has fewer terminals

• Can conduct current in either direction

• Requires higher breakover voltage

• Can only conduct current in one direction

What physical effect describes the changes in electrical resistance when a material is mechanically deformed?

• Piezoresistive Effect

• Piezoelectric Effect

• Thermoelectric Effect

• Photoelectric Effect

Which effect is responsible for converting light energy into electricity?

• Piezoresistive Effect

• Thermoelectric Effect

• Photoelectric Effect

• Piezoelectric Effect

What does the Hall Effect describe?

• Interaction between moving electric carriers and an external magnetic field

• Changes in resistance due to mechanical deformation

• Generation of voltage due to pressure

• Conversion of light energy into electricity

In PLC ladder programming, what do the vertical lines represent?

• Logic gates

• Output devices

• Input devices

• Power rails

What do contacts in series represent in a ladder diagram?

• AND operations

• NAND operations

• OR operations

• NOT operations

What is the purpose of a latching circuit?

• To hold an output energized even when the input ceases

• To amplify the input signal

• To generate random signals

• To convert AC to DC