Engineering Interview Questions
Questions Answers Views Company eMail

How to calculate sand,cement for 1:5ratio brick masonary

IVRCL, Jamek, Prera Nirman Sewa, SPCL,

4 5154

what is the difference between rccb and elcb?

1 1953

Why is it that bus reactors are not accompanied by a neutral grounding reactor whereas a line shunt reactor is? PGCIL does so.

2 5703




What would be the quantity of cement:Sand:Aggregate (1:2:4) requirement for slab casting measuring 1mtr x 1mtr x 0.10 mtr (4 inches)?

616

Transformer rating=> 15/20 MVA.Why there are two raings? What should be the rating of the fuse at the secondary if the voltage level is 13.8KV/4.16KV?

Bhel,

1 3608

can we control operation of PLC from operator station?

3 2296

what is the reason for connecting hvdc monopolar line with negative conductors

350

On what principle the sonar/ radar works

3 3558

why to use 50hz only in tansmisson and as well as in distribution why not60hz?

2 1638

how many pulses are required by a ac induction servo motor of 4 poles with 50 Hz frequency to rotate by 1 degree?

United Phosphorus,

492

what is the exact difference between zener breakdown voltage and avalanche voltage??

TCS,

3 3580

In a overhead system why the voltage between line &ground is taken for basic comparison ?and in case of underground cables the comparison take only by the voltage between cables?

L&T,

1 1814

how dc generator produce voltage initially?

Bisleri,

1 1389

There is a toy train that can make 10 musical sounds. It makes 2 musical sounds after being defective. What is the probability that same musical sound would be produced 5 times consecutively? ( 1 of _____) ?

TCS,

2 2381

what will affect low density aggregates on concrete wt?

2 1965







Un-Answered Questions { Engineering }

why EMF IS INDUCED IN A CONDUCTOR WHEN FLUX LINKING WITH IT CHANGES ACCORDING TO FARADAYS LAW.

446


what is the use of vacuum balancing valve in CEP

635


7- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?

552


'documenˁ

406


why the carbon brushes are broken in srim while the motor runningtime

116


if field breaker of generator is closed prior to its rated speed on a power generating unit. what will be the effect on generator, unit transformer and starting transformer.

203


write power supply application, manufacturing, advantages, cost

528


While converting delta into star or star into delta ,the three values of resistances remains unchanged .Find out the value?Let In star R1=x;r2=x;R3=x On converting into delta,R12=x;R23=x;R31=x Find the value of x

390


Show the schematic arrangement of diesel power station layout and give its principle of operation.

1145


Dear Engineers, Can you please advise me the material requirement to construct a room 4 M x 4 M 1. No. of Standard Brick 2. Requirement of Cement Bags 3. And Concrete for Steel, Cement, sand, etc Thanks

206


Explain Even and Odd signals?

231


Heavy fuel oil sulfur content and counter measures?

419


what kinds of Transformer oil grade is better for power transformer ?

69


whats te normal transformer current rating

583


am going 2 write railway exam 4 d post of section engineer..i wnt 2 knw abt d que pattern n d previous year que papers

597