Answer / vinoth

plcc is a latest version of pcb..in pcb we cannot change the input and outputbut in plcc we can change input and output..

In plcc there is a microcontroller tat can operate the machines like access control ,lift etc........

From an electrical motor & electrical generator, which has more efficiency & why?

1 Answers   Sahi,

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earth also having a gravitational force (magnetic field of north and south)but it attracts any object compare to this theartifical magnetic cant perform same as earth why?

0 Answers  

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when the rheostat kept in minimum to maximum position in motors what will happen?

7 Answers  

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how to reduce the magnetizing current in distribution transformers

1 Answers  

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in alternator how we can give power to rotor ? its power is AC or DC ?

5 Answers  

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What is Fan Coil Unit . How can we calculate CFM .

3 Answers  

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Difference between ups

32 Answers   Emerson, Tata Power,

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I have applied the post Junior Engineer-iii(c&w)in R.R.B chennaI recently . can i get any model question paper LAST 4 YEARS?

2 Answers   Data Entry Operator, RRB, SSC,

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mostly the questions were from machines... d.c. machines, transformer, synchronous and induction all theory paper........ few from power system... but the level of paper was easy.....

0 Answers   IFFCO,

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transformer test

4 Answers  

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Is there any Flood lighting system which produces more light (More power consumption 1000W,400W etc.,), white light and restart immediately after power restoration ?

1 Answers  

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Hi everyone. Some Generators uses 3-Pole breakers with extra contactors for Neutral. Some uses 4-Pole. Why so? What is the idea behind this? Thanks in advance for the solution. Kr.

0 Answers  

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