NC pushbutton switch: The abbreviation NC stands for a Normally Closed pushbutton switch. It will be initially at closed contact and will be opened when the switch or coil is energized. It opens a circuit when it is pressed and return back to its closed condition when it is released. An electrical symbol used to represent NC pushbutton switch is given below Given: The conventional hardwired relay circuit should perform the following circuit functions when a NC pushbutton is pressed. The pilot light must be switched ON. The solenoid must be de-energized. Motor running should be started. Sound a horn.

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Chapter 6, Problem 1P

Program Plan Intro

NC pushbutton switch:

The abbreviation NC stands for a Normally Closed pushbutton switch.

It will be initially at closed contact and will be opened when the switch or coil is energized.

It opens a circuit when it is pressed and return back to its closed condition when it is released.

An electrical symbol used to represent NC pushbutton switch is given below

Given:

The conventional hardwired relay circuit should perform the following circuit functions when a NC pushbutton is pressed.

The pilot light must be switched ON.

The solenoid must be de-energized.

Motor running should be started.

Sound a horn.

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