Answer / parthasarathi biswas

MPCB-Motor Protection Circuit Breakers
MCCB- moulded case circuit breaker
ELCB-EARTH LEAKAGE CIRCUIT BREAKER
RCCB-RESIDUAL CURRENT CONTROL CIRCUIT BREAKER

Answer / syed

MPCB-Motor Protection Circuit Breakers
MCCB- moulded case circuit breaker
ELCB- Earth Leakage Circuit Breaker
RCCB-ResidualCurrent Circuit Breaker

When color of silica gel will gets change from blue to pink from Top to bottom?

0 Answers  

---

how to calculate sizing of NGTR (Transformer rating,Loading resistor value and Current rating of resistor) and what is the X/R ratio. Details : 11kV,Capacitance 1.73532 micro farads,40kA for 1sec.

0 Answers  

---

I HAVE 2 nO'S OF SYSTEMS, HOW MUCH UPS CAPACITY REQUIRED ALONG WITH 400WATTS ANOTHER LOAD? PLEASE GIVE THE FORMULA?

1 Answers  

---

which type of A.C motor is used in the fan (ceiling fan, exhaust fan, padestal fan, bracket fan etc) which are find in the houses ?

25 Answers   Airtel, MPPTCL, USSA,

---

whether inrush current for lamps or capcitors should be considered cable sizing to feed that load.

1 Answers   Cipla,

---

Hi, We have have the major losses between BBT ( Bus Bar Trunking) to LT Incomer & LT to HT incomer, how to arrive the losses?

1 Answers  

---

a)In a 3-phase 4-wire circuit, a circuit breaker is selected to protect the circuit whose highest fault level is 6.6 MVA. Determine the required minimum breaking capacity in kA. (Note: Covert 3-phase power in terms of kA to find answer.) b)Using the below, determine the required minimum making capacity in kA as a “peak value”. Rate breaking capacity (Icn) ka: Icn<= 1.5 Factor = 1.41 1.5

0 Answers  

---

What is the difference between acs 550 & acs 850

0 Answers   Madhucon,

---

How to calculate earth flat size for 250 Kva DG and transformer?

8 Answers   Deepak Fertilisers,

---

why do power factor in the three phase induction motor increases with the load ???.

3 Answers   Jindal,

---

what is the use of CAPACITOR in CFL lamp?

6 Answers   Areva, Autopal,

---

bit confused - am i correct in thinking that to determine line to line voltage in a star config 110v 3 phase 4 wire distribution system i would use a voltmeter? I have a circuit configured as an unbalanced load, consisting of three incandescent lamps (1x40w, 1x60w, 1x100w - all 110v rated)connected in a star configuration to a 110v 3 phase 4 wire distribution system. I want to find out what types of meters i would use to obtain: a) each line to line voltage b) the line to neutral voltage across each load c) current flowing in each line and load d) current flowing in the neutral conductor e) power supplied to the loads im assuming i would be using ammeters in series along each line and voltmeters in parallel across each line to neutral? Also how could i predict these meter readings before taking them and with which formulae? Any help would be greatly appreciated A.

1 Answers  

---