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Engineering Interview Questions
Questions Answers Views Company eMail

what is the use of spst switch in performing experiment on self excited dc motor?

 2 3226

why occ characteristics curve in not tracing back when we are bringing back the rhoestat?

 1427

why we cannot cool the room by opening the refrigerator ?

 2 5161

In the Load Test of 3 Phase Squirrel Cage Induction Motor, 2 wattmeters are used. One of the wattmeter deflects in negative diretion during no load. Why?

CAT,

1 8408

How to design the blower for motor? how to two blowers connected in motor?

Ashok Leyland, TATA,

1 3595

what is the current pay package for an instrumentation engineer having 2 years of experience in cryogenic technology???????

 1 4265

WHAT IS THE MASS FLOW FLOW METER

Reliance,

4 7490

what is Diversity factor in electrical installations

 3 13759

how to decide the ratings of the MCCB,MCB in electrification.give me the proper thumb rule or procedure.

ABB,

2795

how to decide the ratings of the busbar in electrification.give me the proper thumb rule or procedure

ABB,

1 4093

why excitor coil of an alternator can fail

 3 4803

1-How to calculate the CFM of HVAC ? 2-if we have CFM and then how can we calculate AC Duct size?

 1 6578

is transformer, active or passive device? name some active and passive devices.

HSBC,

9 22202

66kv under ground cable how to layaing in ground any special case two ckt r runing

 1528

From an electrical motor & electrical generator, which has more efficiency & why?

Sahi,

1 2239

Un-Answered Questions { Engineering }

in block masonry l=10',b=0.5',H=10',Calculate cement ,sand and no.Of blocks?

1554

What is parallel data transfer process?

661

What is the formula to calculate the size of Aluminium and copper cable?

1456

is the used fire extinguisher fall under Hazardous waste material?

1421

Tell me the field calibration procedure step by step with diagram of pressure gauge, pressure switch, pressure transmitter, temperature switch, level switch, flow switch, flow transmitter.

2705




Why phase sequence must be same in any ht motor or generator circuit?if phase sequence doesn't same whatever will be affect on circuit?

1715

What is the effect of polarization of dielectric under heat?

596

why any centrifugal blower draw more current in starting. consider id fan and fd fan?

1363

In which principles tx ,pressure gauge,Temp gauge,control valve works?

1288

Define hybrid parameter?

570

I am doing apprenticeship training at HT switch yard in NLC. How can i get electrical c license. ??? What r the rules for getting it as an apprentice? ??

1357

What are the causes of positive and negative propeller slip?

1552

ASTM D 3455 - Standard Test Methods for Compatibility of Construction Material with Electrical Insulating Oil of Petroleum Origin has been used for Testing Transformer Oils with a product placed in it. Aged Control Oil has a Power Factor of 0.032% at 100°C. Aged Oil with a Test component has a Power Factor of 0.093% at 100°. Is this increase acceptable? If not why? How much increase is acceptable?

1508

What Are The Advantages Of Spread Spectrum?

651

what is zinc diffusion?

1537

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