railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical and Electronics Measurements Data Acquisition System PLC SCADA
The above figure about a push button is:
1
A multiline diagram of push button.
2
A symbol of push button with 1 NO and 1 NC contact.
3
A photographic view of push-button.
4
A push button is shown in pressed condition with its NC contact becoming open and NO contact becoming close.