Please tell me in DETAIL about the following 3 types of fuses or recommend me a good power system protection book or a website link ?
1.Dropout Fuse
2.Striker Fuse
3.Empulsive fuse (not sure if its impulsive or explosion fuse , sorry)

How to apply 'c' license and also explain what is difference between 'c' and 'b'license.i am also working in one of the private company.i have finished my diploma in 2014 .i have already finished in ITI electrician course.....

My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula.
formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec.
Sp = RT( I x I x t) / K
Where Sp â€“ is the cross sectional area of bus bar in millimeters.
I - Â Â is the value of AC fault current.
t - Â Â is the operating time of disconnecting device in seconds.
K â€“ Â is the factor depending on the material of the conductor, insulation and initial and final temperature.
Value of â€˜kâ€™ for copper is 143.

why the arc welding machines require parallel earthing
systems? ie why each machines are connected to earth pit by
separate wires during earthing? wats it adavantages?

253

detailed procedure how we calculate cost for pcc m10 and
rcc m20 including centering and labour excluding steel/ iron

803

Saving in copper achieved by converting a 2 winding
transformer in to an auto transformer is determined by
A voltage transformation ratio B load on
secondary
C quality of core material D size of
transformer core

138

what is the ms flat constant for calculating earth mat design calculation?

69

can anyone show me how the 3 phase power is supplied to
socket outlets?

156

how to calculate singlephase motor efficiency?

100

sail kaott diploma ece ke interviw me qus.kis parkar ke aate
hai
aur G.S me kya puchate hai kya sameedyaan me kis parkar ke
qu.puchate hai

334

how to avoid Saturation in C.T?

139

WHAT ARE THE DISADTAGES OF SINGLE-WIRE-EARTH-RETURN SYSTEM
USED FOR RURAL ELECTRIFICATION?

178

WE HAVE THE DC RECTIFIER 1500A, INPUT VOLTAGE IS 3 PHASE.
HOW TO CALICULATE THE LOAD? 3 PHASE SIDE EITHER dC SIDE.
PLEASE SUGGEST ME

169

How many different speeds can be obtained in cascade control
of two induction motors?

158

If a rotary UPS is in line through grid power; What would
be the impact on Power Factor if the load through rotary
ups is 25% , 50% , 75% & 100%. Will the power factor reduce
with less load?

165

why we are calculating the capacitance between
phase(conductor line)and ground in transmission line?why
cant we calculate capacitance between the phase and the
nuetral line?if so what is procedure.

221

which one is more efficient, torq, power & ecnomy with the
same frame size AC motor / DC motor?

161

please send me previose rrb junior engineer qustion papers