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OPS Interview Questions

why in three phase 440 circuit in all phase current is almost equal L1-35 A,L2-34 A ,L3-31 A but in nutral when i check with clamp meter it shows 25 A?

10460

why for transformer protection we protect tranformer from 3rd hormonics and 5th hormonics and what is the reason of generating these horminics in electrical system?

7682

what is difference between start imitation and start interlock for 3 phase motor protection ?

6335

how we can adjust for three phase motor cold stall time ,hot stall time and thermal register set up?

2248

why voltage rating not mention at HPSV or HPMV lamps?

5187

can we use HPSV LAMP in HPMV LAMP fixture ?and viseversa.

10794

Why Transformer Neutral having one earth pit ( more earth electrode resistance) whereas body have many earth pit ( less earth electrode resistance)?

3601

how to calculate restraing current and operating current for differential protection if 20 mva transformer is OLTC 33 kv/11 kv ? and what should be the type and ratio of CT?

4338

how to find 5 kilo meter long under ground 33 kv cable fault location if IR VALUE shows 0.05 M ohm @5000 volt.and cable fault locator shows some time fault distance 3 kilo meter ,3.7 kilo meter and some time 1 kilo meter? now how to find the fault location that where is leakage.

3512

how to find 5 kilo meter long under ground 33 kv cable fault location if IR VALUE shows 0.05 M ohm @5000 volt.and cable fault locator shows some time fault distance 3 kilo meter ,3.7 kilo meter and some time 1 kilo meter? now how to find the fault location that where is leakage. note--it is tested with 5000 kv megger and insulation resistance is 0.05 M ohm. and some time 0.03 M ohm comes.

1398

Explain the difference between delete and truncate.

336

Differentiate strong typing and weak typing

304

What are the basic functions for master, msdb, model, tempdb databases?

365

What main configuration parameters are specified in mapreduce?

249

Where session is stored?

305

how you can define coal ?

412

What is websphere plug-in for web server and where do I need to install the plug-in?

274

What is SARFAESI Act

408

How do I customize the ribbon in excel 2016?

145

What is datadriven framework and keyword driven?

316

In which it do you assign an applicant to a vacancy. Where do you assign that status?

315

how D3.js selects method?

3

Is excel a function?

150

Differentiate between hashset and hashmap.

279

Users are not being allowed on the system. The following message is received: ora-00257 archiver is stuck. Connect internal only, until freed. What is the problem?

145