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Why OLTC(On Load Tap Changing)transformer is not recomended for improving voltage instability?
2 61811. A bomber drops a bomb from an aircraft flying at 2000 km/hr. at an altitude of 7km. The speed at which the bomb will strike the earth would be
KNJ,
1863When 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<
2100Why the meters sonnected to metering core of CT are not damagedon event of a fault??? Explain the phenomena??
1 5221How to determine earth fault level to set relay for a normal distribution system of 11 kV , 100 A load????????
TCS,
1 4147Why the Transformer connection is changing in different transformer?(Like Star & Delta,Delta & Delta,Star & Star,Delta Star) From that connection where it is used?
2 69241)What will happen when 240 VDC supply is connected to 240VAC supply(DC supply +ve is connected to phase of AC supply & DC supply is to neutral of AC supply). 2)Also what will happen when 240 VDC supply is connected to 240 VAC supply in reverse polarity as of Sr. No 1.
2 4799
I am selected for interview jr executive(electronics)in AAI.i have the interview on 13th october2010.please anyone send the requirements and share the interview details who had completed.if u have any details plz send to srikkanth.283@gmail.com r @09491955876....i'm in tense.....
difference between semiconductor & conductor & insulator?
Questions on flow meters,few questions on HART protocol,
How to construct a water sump in a rocky soil?
Explain the use of gear pumps in motor?
Pl. Brief about DNC.
Define quad?
what is difference betweeen operator overloading & operator overriding?
An automatic water heater is an example of which type of control system?
Explain what does green field project mean?
What is load?
how to build a network which step down 415v to 1v rms
what is POTT and PUTT explain?
how you configure motorvision relay (L&T make)from DCS
snd me karur vysya bank clerk model papers kundavarapu.harish90@gmail.com
