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Topic :: Copper
Where do copper, gold, iron and coal respectively find in India? (A) Kollar, Khetari, Kudremukh, Jharia (B) Jharia, Kollar, Kudremukh, Khetari (C) Kudremukh, Jharia, Kollar, Khetari (D) Khetari, Kollar, Kudremukh, Jharia
2 13972Copper is not used for long distance electrical wires because: (A) Copper is not a very good conductor of heat and electricity (B) Copper melts at high temperatures (C) Copper wire would cost very high (D) Copper is a poor conductor of heat
1 3532In making jewellery with gold it is alloyed with copper or silver because (1) Pure gold is not ductile and malleable (2) Gold is too hard for use in pure state (3) Pure gold is highly brittle (4) Gold is too soft for use in pure state
1 3247What is the amount of copper in twenty-two carat gold? (1) Two carats (2) Four carats (3) Six carats (4) Eight carats
2 4034In which type of rocks re metals like gold and copper mostly found? 1 Old igneous 2 Old sedimentary 3 Old metamorphic 4 New metamorphic
3 15993tell 2 reasons for why only copper is used in domestic wires& only alluminium in transmission lines ?
ABB,
10 17774What is the rating factor for copper cable ( Specific value according to the type of laying ) & the voltage drop?
1848
How to Decide(calculate) Bush bar size for copper and aluminiam ?
What is the rating factor for copper cable ( Specific value according to the type of laying ) & the voltage drop?
HOW TO SELECT THE COPPER CABLE SIZES OF MOTORS,TRANSFORMERS?
What is the gross weight to copper ratio in slip ring induction motor of 4000 HP,6.6 kv, 372amp, 992 rpm GE motor.
How can we calculate strength of copper hich is supplying electric power to heater and in it hold the heater also and what r all types of forces which is acting on it...
what is calculation mathod/formaulla for deciding Size of busbar (Copper/ aluminum)for L.T. panel on Various Fault level like 50kA,25kA,10kA
how to avoid electrical shock how capacitor store charges wat are the speed control of induction motors state faradays law flemings left hand rule what is rotary converter wat is transmission and distribution what are the sources of energy abrevation of acb,vcb,sf6,igbt what is output equation of transformer which test copper iron and iron loss are calculated what is eddy current draw a single line diagram (10 marks) draw direct online starter(10 marks)
What is the current carrying capacity of 0SWG,3SWG,10 & 12 SWG solid bare overhead copper conductors?
what is the current density of copper & alluminium.
What is the formula to calculate the size of Aluminium and copper cable?
Why do we use copper cable for HT Supply and why not Aluminium?
How can you calculate the size of the down conductor cable for the lightning protection system. Is 70mm2 cable can replace 95mm 2 bare copper cable when the copper tape size is 25Wx3 thk mm.
why copper is a bad conducter at low temperature?
caurren capacity calculator of Copper and aluminium wire
What is Icu and Ics and what is difference b/w them. please tell me how to calculate a size of a copper bar for a system or a breaker... reply on... king.arish@gmail.com would be waiting for a logical answer.
