Search Results for: relays
- PLC
PLC controller Input/output Interface
PLC controller inputs An automated system depends to a large extent on the ability of a PLC controller to read…
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Electrical Interview Questions – Part 1
1. What is “pu” in electrical engineering? Pu means per unit and this will be used in the diagram of…
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What is Sinking and Sourcing?
Sinking and Sourcing: PLC has input and output lines through which it connects to a directing system. The inputs can…
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Advantages of PLC
PLC is a control system that is compatible with many control system designs in today’s industries, which are not only…
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Electromagnet and its applications
Introduction Magnetism and electricity were considered to be two separate phenomena for a long time. However in 1820, the Danish…
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Different types of direct acting solenoid valves
Introduction The solenoid valves can be classified as Direct acting solenoid valves and servo assisted in this session we are gonna…
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Difference between Twisted Pair,Fiber Optic and Coaxial cables
Introduction Network topologies connect individual devices. Such connections allow the devices to share and exchange information. The most frequently used…
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Comparison instructions of PLC
Introduction Comparison instructions in PLC are used to test pairs of values to condition the logical continuity of a rung.…
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Why is motor protection necessary?
Introduction In order to avoid unexpected breakdowns, costly repairs and subsequent losses due to motor downtime, it is important that…
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Fuse and Types of Fuses
What is a Fuse: The fuse is an electronic device, which is used to protect circuits from overcurrent, overload and…
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