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Question { 5570 }
if suplly 11kva its give 440volts then if suplly is given 10kva whats the volts given
Answer
440 volts.value of current will change.
| Is This Answer Correct ? | 1 Yes | 0 No |
Question { 11456 }
why we step down voltage level from 33kv to 11kv and 11kv
to 415v.Instead we can step down voltage from 33kv to 415v
directly using single transformer?
Answer
possible. but the problem is size of transformer due to
heavy current in secondary side. winding is required. this
will make the transformer bulky. not easy to transport to
load center along with various operation problem.
| Is This Answer Correct ? | 4 Yes | 2 No |
What is the function of semicon in 33kv ht cable ?
Answer
heat from insulation to cu. tape over it. this heat is
produced in Core due to flow of current. Further, to
TERMINATE THE CABLES, ALL CONDUCTING AND SEMICONDUCTING TAPE
IS REMOVED FROM INSULATION AS current in cable can also come
into insulation and it may be damage the cable, dangerous to
persons working.
| Is This Answer Correct ? | 3 Yes | 9 No |
Question { 4077 }
Suppose i Have an Ac motor of 25Hp 1500 Rpm 50 Hz Can i run
a motor 2500 Rpm by AC drives by increasing a frequency
either it safe or not ....
Answer
this motor.
| Is This Answer Correct ? | 1 Yes | 5 No |
Question { Cable Wireless, 13882 }
IN CABLE TRENCH WHY FILL UP THE SAND. AND WHAT IS THE
DIFFERENCE BETWEEN OVER HEAD AND UNDER GROUND LAYING THE
CABLES
Answer
air is cooling media. whereas in Under ground cables, in
pucca trench, we put sand around the cable before is it is
cemented.The reason for sand is that it absorb water and can
help in transmit the heat from cable.
| Is This Answer Correct ? | 5 Yes | 2 No |
what will happen if instead of neutral we use earth wire as
return conductor?if we can use ,then why we are not using in
our day to day appliances?please justify the answer
Answer
-ive infinit voltage. Then increase in the effective voltage
and then more current will pass. our appliances are meant
for specific voltage grade. this high current will damage
our appliances. usually, you can prove it by using electric
bulb neutral connected with earth wire. and chk the parameters.
| Is This Answer Correct ? | 4 Yes | 10 No |
Question { 4884 }
DRAW THE DIFFERENCE BETWEEN GROUND AND NEUTRAL IN BOTH
SINGLE PHASE AND THREE PHASE?
Answer
earth is with negative polarity having value (-) infinit.
| Is This Answer Correct ? | 1 Yes | 1 No |
