Interested to Buy Any Domain ? << Click Here >> for more details...
What is the similarity and what is the difference between relays and PLC?
- 3 Answers
- 28806 Views
- NTPC, I also Faced
- E-Mail Answers
Answer Posted / sujith kumar
A relay is a switch which gets ON/OFF with respective to the input signal of it.It can be NC or NO depending upon the application.
A PLC is a Microcontroller which has a memory and Relay(s) Controller in which a Program(Our Application) is stored and it will analyse our application and send signal to relay(s).
| Is This Answer Correct ? | 8 Yes | 0 No |
Post New Answer View All Answers
CAN WE CALCULATE THE NEGATIVE SEQUENCE AND ZERO SEQUENCE REACTANCE OF A GENERATOR USING ONLY ITS RATED VOLTAGE, KW, PF AND SYNCHRONOUS REACTANCE??? IF YES, THEN HOW??
If i have two 3000 kW motors and the whole facility requires a 10 MVA transformer. What would be better installing two 5 MVA transformers(one for 1 motor ) or just a single 10 MVA transformer for both of them. Give reasons for your answer.
Define piezo-electric effect?
WHY THE DIMENSION OF TWO SAME RATED MACHINE IS DIFFERENT ?
with 3 phase board on a 63 amp rcd is it ok to have 6 electrical showers 2 on each phase and what problems could happen
how freewheeling diode improves the powerfactor
what is meant by vector group of a transformer? How can it be derived?
What is the reason behind current flow(20 A) in amain earth cable of an SMDB? Is cuurent flow(45A etc) through a neutral cable acceptable?
WRITEDOWN FEW RELY CODES
why sometime we get electrical shock while touching the ballon of dish tv connection ? which we should not get.
how does commutator convert a.c to d.c?
I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?
What is order of the system?
draw a circuit diagram connecting transformer OLTC- RTCC- VCB-Marshalling Box otherwise Explain in words
at work we have a 3 phase motor but on testing one phase isnt getting a reading. it runs 24 hours a day all week. stops and starts well no noise or heating. the phase isnt down to earth.is it just a bad meter reading or not? phases one and three came up with a resistance reading of 0.4 but phase 2 couldnt get anything shows up as open circuit.
