Question { 11986 }

Why one can experience electrical Shock due to Voltage or
Current?? or both voltage or current??

Answer

only the amount of current flowing through the human body is
the cause of electric shock not the voltage.
a human can withstand up to 50V DC without feeling shock.
because the current is very less to feel the shock.
if at the same voltage(50V) we pass 100mA through a human
body using a current source, he will get a severe electric
shock.

Question { 28752 }

How current is reduced in STAR connection?

Answer

in star connected winding net resistance across the line
voltage will be less as the winding across line volt are in
series.

in delta connected winding the net resistance across the
line voltage will be more as the winding across line volt
are in parallel. (one winding will be in parallel with
series combination of other two. so net resistance is less
than the resistance of one winding in delta)

Question { 4330 }

What is the required bending radius requied at the time of
cable laying?

Answer

bending radius should be 12 to 15 times of the cable diameter.
for XLPE cable 12 times of dia.
for PILC cable 15 times of dia.