Answer Posted / ganesh

All dg 9oo*1.39a =1251a (415v , pf .8,)
1251*1.5 time full load current 1876 A
you choose 2000A breaker
300*6 sq mm2
or 225*7 SQMM2

i applied for c licence with my one year apperents trainee and i have attaced with A grade contractor company experiance that is for 14 monts experiance this document is sufeicant for c licence? pls tell why they rejected

2208

---

What is mean by spike arrester(Voltage Operated)

2036

---

it is possible to measurement of tension of slipring induction motor(SRIM)carbon brushes, any maesuring instruments are available in the markets.

1972

---

How may I get the maximum current capacity for a particullar size Alluminum or Copper cable if there is compulsion to use?

1876

---

What is the difference between diode and a transistor in terms of the direction of current flow?

2185

---

What is meant by short-pitched winding?

1167

---

What will happen if a dc source is given to a tubelight. Will it work or wont it work....

1952

---

am commissioning the trafo without connecting the neutral therefore unbalance will occur what is the alternative solution for this?

1812

---

Why we make earth connection with Transformer Body and What will be the minimum size of copper wire as per code with respect to KVA rating of Transformer?

1801

---

What is effect of harmonic current (Draw by VFD) on power system/ electrical Equipments ?

2039

---

What is the maximum and minimum rating of UPS?

1458

---

why we use two slope(differential & restraining) in differential relay.but in busbar protection differential we are using only one slope?please explain

2225

---

how hydrogen cooled alternator undergo maintanence ? that is hydrogen when come in contact with air can result into explosions .

1896

---

at work i have a genertor/alternater what is the easyest way to work out if it is dc or ac?

1861

---

What are the advantages of stationary armature and rotating field system?

1185

---