Interested to Buy Any Domain ? << Click Here >> for more details...
Difference between copper earthing & aluminium earthing?
- 2 Answers
- 5823 Views
- I also Faced
- E-Mail Answers
Answer Posted / mohamed mustafa
Mechanical strength of CU is more than ALU
cu has more corrosion resistance than alu
resistivity of cu is less than ALu so a good conductor current
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
can anyone send me some sample question regarding power grid corp
what is the effect of connecting three phase supply lines to three phase auto transformer output terminals through a fuse of 10Amp and a circuit breaker (MCB). Is this connection permanently destroy the transformer?
What is meant by system?
1. A 380 / 220 V r.m.s. 3-phase 4-wire circuit carries loads of 8 + j8.1 ohm; 4 + j4.1 ohm; and 2 +j2.1 ohmin the three phases respectively. The length of the circuit is 100 m, and the resistivity of the phase conductors is 0.0005 Ω/m. The neutral conductor is of the same size as the phase conductors. a) Select a reference angle 0for the first phase. Then write down the three phase voltages in both polar format and complex number format. b) Make appropriate assumptions, and take temperature effects on resistance is insignificant. Calculate the currents in the three phases. (Note: Determine conductor resistance, and apply Kirchhoff’s Voltage Law) Based on the result, suggest a main switch rating for the circuit. c) Show your preferred direction of neutral current in a diagram, and then determine its value. (Note: Apply superposition principle, and Kirchhoff’s Current Law) Use its magnitude to show that in this circuit, the unbalanced load may increase the voltage drop in some of the phases. (Note: Also observe the common volt drip in neutral) State your assumptions, if there are any. d) Suddenly the neutral wire of the circuit is broken. Estimate the new currents in the first phase, i.e. Phase L1. State your assumptions, if there are any.
Actually I have a doubt on neutral and earth.we use Ac power without taking neutral by connecting to earth,but at that time does it affects on efficiency of any electrical components or no? If yes how?
WHY DO VOLTAGE TRANSFORMERS FAIL DURING EARTH FAULT IN THE DELTA CONNECTED 6.6KV ELECTRICAL SYSTEM
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?
Difference between a pilot wire and a normal conductor?
What is the working principle of MIG welding? and its out put Voltage?
how many load we can take for lighting
On 400 amp factory load how kvarh capacitors provide
why we setting 95 deg and 105 deg in wti and oti of distibution transformer ? give the reson for that ?
th how could we differentiate between armoured copper and armoured aluminium cable what is the basic application? why we prefer the armoured copper as compared to armoured aluminium.
sir, i am 3 years diploma course pass out candidate.what type of certificate can i got in marine service.
we have amp, voltage, kw, length detail then how to calculte copper & alluminium size of conductor of 3-phase induction motor
