CNC Machine & PLC - MCQs with answers

CNC Machine & PLC - MCQs with answers

1. Which unit of PIC undergo the process of converting mains ac voltage to low dc voltage required for the circuits and the input-output interfacing modules ?

a. Memory Unit
b. Processing Unit
c. Input/Output Unit
d. Power Supply Unit

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2. Which bus forms an intermediate communication path between input/output ports and input/output units?

a. Control Bus
b. Data Bus
c. Address Bus
d. System Bus

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3.Which kind of switches examine or detect the presence of an item or object without making contact with them?

a. Proximity Switches
b. Reed Switches
c. Photo-electric Switches
d. Mechanical Switches

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4. Which machine tools are basically handled and controlled by Computer Numerical Control (CNC) machine especially at the manufacturing sector?

a. Lathes
b. Routers
c. Mills & Grinders
d. All of the above

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