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Questions :-
HR-
Q.1 about yourself & family background ?
Q.2 Why u choose Power sector as ur carrier starting not any
other sector ??
Q. 3 What think abt NTPC ?
Techincal Questions:-
Q.1 about Vocational Training……What u did , see the main
equipments….etc
Q.2 Why a transformer Noise during its running condition ?
Q.3 about transformer oil material & Test name for the
measurement of its dielectric strength & wht will u do if
its dielectric strength goes low ? ……..some discussion type ?
Q.4 What is relation between transmission lines &
Communication lines ?
Q.5 Which Machine u will prefer to use at a place where
flammable gases are coming out & why ?
Q.6 how fault in an electric system is detected & hw
protection of equipments is done ?
Q.7 Why we didn’t feel electric shock in an electric train ??
Q.8 Anything u want to ask from us ??
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Answer Posted / ramana
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if in 3-phase system voltage=440V,frequency=60Hz, current=400A. then if it is single phase then current=? and if it is single phasing then current=?
what is cathodic protection and why it use in industries?
According to underground cables a) stress b/w sheath & conductor is high b) inrush of core & conductor
If we want to change a contactor of faulty one what are the conditions want to fullfil
What are the properties of a resistor?
When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<
1hp= how much rpm
What's the difference between non break power supply and non break non short break power supply
what is effect of 5amp fuse on 2mva pry protection of transformer
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what is the relationship between current&voltage in practical purpose ?
. How to calculate the Short Circuit Impedance in Transformer? How to calculate the Short Circuit Impedance in Transformer?
For some transformers we are using solid neutral earthing while some others we are using resistance earthing why ?
What is time response of the control system?
What is core CT & it's function?
