Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / j. r. gaikwad
Relay is name given to a mechanism which changes the
position of a switch under certain predetermined condition
e.g.excess load , excess current , under voltage , over
voltage etc.
MCB contains electromagnet operated switch to trip under
short circuit state ( as it operates insantaneously , this
is necessary under shortcircuit condition ) & a thermal
over load relay i.e. a switch operating because of bending
of a Bimetal strip at higher temp produced by the excess
heat produced by the excess current - due to over load .
MCB simply means "small" circuit breaker .It does contain
mechanism to trip , i.e. switch automatically under adverse
conditions !
This is the right answer.
| Is This Answer Correct ? | 7 Yes | 2 No |
Post New Answer View All Answers
How 48-relay (incomplete sequence) functions?
why and how voltage sharing in transformer, during magnetic balance test ?
Draw the equivalent circuit of crystal oscillator?
What is quadrantal symmetry?
What is the working principle of CFL & T5 tube light & 40W tube light with electronic ballast?
What is phase cross over frequency?
DC transmission
The electrical energy required to raise the tempreture of a given amount water is 200 kwh. If the heat losses are 20%, the energy required is?
Give atleast 20 alternating current apparatus and devices.
As we use capacitor bank in 3ph ckt to improve PF, can we use capacitor in single ph domestric use, in house we have Fan,Mixer,electric cooker,iron,tube choke they also lag the system,because it is inductive load. if it is possible to improve PF of single ph system-- if yes- type of capacitor to be used,connection diagram, working in detail. if no-- list it.
do any one help me to get "C" license,, i have doubts ,,, if mediators ter pls call me,, my no is 8056640042
can I improve the furnace power factor (10 mva transformer) by adding a capacitor bank before the transformer.Does system power factor vary a lot with the furnace PF?
How could I get a certificate of competency as Electrical Supervisor? I have completed By BTech in Electrical this year(2012) for VJTI Mumbai Maharashtra. Is it compulsory to be produced while joining?
what is the significance of tan&delta and how it performed in power transformer
new 90kw motor installed so how I purchased cable ,fuse,etc please give me technic for cable selected why always capacitor delta connection
