PLC SEMESTER QUIZZ 3

Number of operating input switches for EX-OR gate are

• 1
• 2
• 3
• 4

Number of contact per matrix is limited to

• 3*3
• 4*4
• 3*4
• 4*5

The output of a NOT gate is

• Same as the input
• inverse of the input
• Does not change with input
• None of the above

___________ is an example for output device.

• Humidity Sensor
• Solenoid valve
• Switch
• LVDT

The number of holding registers typically ranges between

• 10-100
• 8 to 12
• 10-1000
• 100-1000

A Multi- Input Timer is otherwise known as ______________

• Rententive Timer
• Pulse Timer
• Non-Retentive Timer
• Preset Timer

______timer turns off the output after the preset time

• ON delay timer
• OFF delay Timer
• Reset
• None of the above

Single input timer is called __________.

• Non retentive
• Retentive
• Pulse timer
• Pulse repetitive Timer

As an output, the counter instruction counts each time the_____ changes from a false to a true rung.

• count I/P
• Reset I/P
• Enable I/P
• count O/P

A counters input signal can be from an external device like______

• Limit Switch/Sensor
• RTD
• LVDT
• Stepper motor