Why OLTC(On Load Tap Changing)transformer is not recomended for improving voltage instability?
2 52881. 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,
1450When 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<
1649Why the meters sonnected to metering core of CT are not damagedon event of a fault??? Explain the phenomena??
1 4130How to determine earth fault level to set relay for a normal distribution system of 11 kV , 100 A load????????
TCS,
1 3485Why 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 60421)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 3942
Can please tell mi about SIOS, PRM, SERVER, and what is the diference between PIN LAN, PCS LAN,APC Server, and please send the Doc if possible for referance,mail id patil_amit17@yahoo.com
How to operate a ac chilar plant?
which quality steel is better for molasses storage tank? & why? IS 2062 GR A OR IS 2062 GR B
what do w do when the output of generator is fluctuating?
how we can calculate 2 phase welding transformer rating or total power?
Define tons of refrigeration and cop.
What is the FE 250 structural steel of 8mm tk plate testing sample intervals with IS code or international code?
what is the vvvf in the dumbwaiter?? or lift. what is the actual process?/
if a PTC having operating voltage 230V is not available then Can we short the circuit where PTC inserted or anybody having other solution. if yes, please reply hurry.
what is the total power generation in india?
How work the mobail vibrator
How the capacitance og capacitor volatage transformer is decided?
am a textile eng. frombut with major of my course including chemical eng, subjects, can i too apply to the co.?
What is the difference between isolators and electrical circuit breakers?
What is the main source of power in aircraft?