Answer / 7anoter4

Let's say the cable supplying the outlet [phase-neutral-
ground] is 3*14 awg copper and the length up to supply
panel is 300 ft. The conductor resistance is about 1 ohm[at
rated temperature].For 120 V voltage supply at panel if the
phase contact the grounding conductor the current will be
120/2=60 A. A 15A fuse will burn in less than 1 sec.
However, usually the short circuit current is 500-1000A.
If a bulb is connected between phase and ground ,for a 100
w bulb 120 V the resistance will be 120*120/100=144 ohm.
The current will be 120/144=0.83 A.

Can anybody post questions asked in Engineers India Limited Interview? Thanks in advance.

0 Answers   Engineers India Limited,

---

what is the cost of a analog tachometer, for lab purpose/

0 Answers  

---

How one can check the faulty capacitor, diode when connected in the circuit ? and when you can not take them out ?

4 Answers  

---

what is diffrent between plc and clc??

1 Answers  

---

Explain the working principle of servomotor

20 Answers   ABB, Bhel, FANUC, GE, Jindal Steel and Power, L&T, SIA, Steelco Gujarat Ltd,

---

Why stand-by earth fault relay and restricted earth fault relays are connected between neutral and ground in transformer?

1 Answers  

---

Find the netid and hostid for the following classful IP addresses? i) 117.34.3.8 ii) 132.57.8.6 iii) 207.3.54.12

2 Answers   UOG,

---

How to select batteries required for ups and the inverter if we Known load? And how AH is selected of battery?

0 Answers   Vodafone,

---

what is the use of ballast in tube

2 Answers  

---

Why Powers are named in MW?

1 Answers  

---

How to Convert horsepower to kva? what is the three phase formula? explain me if u can Example..i have 50Hp Moter how can i convert in kva tell me formula three phases Rehan Smileavail@msn.com

4 Answers   Bajaj,

---

What is high frequency grounding????Applications........

1 Answers   Emerson,

---