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Question
HOW TO CONVERT SQ MM OF A CABLE TO DIAMETER, EG. CABLE SIZE IS 
185SQ.MM WHAT IS THE DIA OF THE CABLE??????????????
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
x=pie*r2
wherex=185
185=3.142*r2
r2=185/3.142
r2=58.9
r=7.7
then dia=15.4
 
Is This Answer Correct ?    43 Yes 24 No
Melwyn Dsilva
 
Answer
# 2
Cable size represents one core area. First convert the area
into dia(a). The cable diameter is calculated by adding
sleeve, armour, outer sheeth dia to 3*a +1/2*a for 3 1/2
core cable. Exact size can be seen in cable manufacturers
catalogue.
 
Is This Answer Correct ?    13 Yes 8 No
Sreenu
 
 
 
Answer
# 3
your power cable size is 185 sq mm

now diameter of the cable is

d= square root of area of the cable* 4*7/22
my answer in your question

d=square root of 235.45
 
Is This Answer Correct ?    26 Yes 37 No
Sakthivel
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
On load tap changer (OLTC) explode? Transformer Vector group: Ynd11 Rated Power: 353MVA Rated Current: 693A Voltage:294/20KV OLTC Type: T III Y1000 110/c 12193w Max Operation Current: 295A Step Voltage: 550V Arrangement in Tx windings: Y Connection Problem: Damage of Unit 1 Generator Transformer On Load Tap Changer (OLTC) Description of Incident: 9.00 a.m. :- Generator No Load test on excitation system started 10.30 a.m :- Carried out AVR change over test 11.30 a.m :- Preparation for Generator Manual Synchronizing test 12.00 a.m :- Manual Synshronizing test started. Observed incoming generator voltage higher than running voltage. CECR operator operated Generator Transformer OLTC to bring down the incoming generator voltage 12.03 a.m :-Generator Transformer abnormal alarm operated at Gen.Control Desk (CECR) CECR operater at Generator transformer bay informed that the transformer oil splashed out from OLTC. CECR operater informed that he heard explosion inside OLTC. Observed Oil level & Oil Flow alaram operated at Tranformer local annunciator. 12.05 am :- CECR operator 'Open Gen Field Breaker” 12.10 a.m. :- Elec1 team inspected the OLTC and found the OLTC rupture disk was broken and oil spilled at OLTC area. - Elec1 found the OLTC top cover bulging. Do anyone know why and possibility cause happen in this OLTC.   6
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How can we calculate the cable size??? plz give the formula !!!!!   3
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