Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Satellite Systems Engineering (106)
Engineering AllOther (1379)

Engineering Interview Questions

Questions Answers Views Company eMail

Question 89 - A hemocytometer is a device that is used for counting cells. In an engineering experiment, 100 microlitres of cell suspension is diluted with 50 microlitres of Trypan blue dye. Only death cells appear blue in color when stained with the dye. There are 57 cells detected in a hemocytometer, where 5.3 % of them appear blue when the chamber of the meter is placed under a microscope. Each square of a chamber can contain 0.0001 mL of liquid. (a) Calculate the number of viable cells. (b) The cells ocupied 5 squares. Calculate the average number of viable cells / square. (c) Calculate the dilution factor of the cell suspension by using the formula : Dilution = final volume / initial volume. (d) Calculate the concentration of viable cells / mL by using the formula : Concentration = (Average number of viable cells / square) x dilution x (square / volume).

1 4582

in the farm,water tank of 8000 litter capacity situated in 12 meter above.Farm owner want to lift 7000 litter of water within 7 minute to water tank of 12 meter above.which motor having HP rating is suitable for pumping??

ABB, Anchor, Havells, Keltron, KSEB, L&T, vguard,

1 3291

whats the reason behind SF fault on siemens PLC.please explain in detail.

Pakistan Cables,

1588

How can we measure the residual voltage in dc machines?

GPREC,

1867

why the neutral line is not giving shock to us if we touch it ?

GPREC,

1781

what is asynchronous data transfer???

1774

Plaster area is 1000 sqft thickness is 12 mm so what will be the quantity of cement and sand

1 2598

we have two generators different capacity on 15 MW and other 6MW at 11 KV , 15 MW gen. bus short level current 40KA,and 6MW short level current 25KA,, length of cable 100MTR between 6 MW from 15MW gen. for bus coupling . kindly tell any one can we use both NGR OR one NGR from any GEN. BOTH NGR has diff. rating. Tariq pakistan

RYK Mills,

1679

Define the "All - Day Efficiency" of a Transformer

Transco,

1 3404

4 stroke engine have how many suctions

Varun Motors,

1 3508

How Much the Lean concrete Density?

Techno Unique Infratech,

2808

Which colour of earthing wire

Aravali,

1 2623

how convert the spiral model to prototype model ?

1726

How to convert milliampares into flow??

1718

We are dealer in Maharashtra State & We have recd. form C from dealer of Maharashtra State against our E-1 form. Now assessing authority is asking for counterfoil of our E-1 form. But, our E-1 form counterfoil is misplaced somewhere & assessing authority is disallowing the C form which is recd. from Maharashtra State.Please let us know the option for allowing C form?

1 2474

Un-Answered Questions { Engineering }

Working principle of magnetic flow meter ......and calibration procedure of e+h magnetic flowmeter...

2343

Explain how to calculate knee point voltage? Describe its purpose for differential protection.

1003

What is the work of BOIA, TRx, BB2F, Duplexer, Combiner, Multi-coupler, RRI.

3369

I want previous rrb enteranse exam papers in junior engineer(Signal/Tele/c&w). please send that papers to my id dkg_unnao@yahoo.com

3338

Explain how polyester is made?

WHY BLADE & JOW OF ISOLETOR IN SUBSTATION?

5053

Why neutral cable carry current.

1974

how much quantity of cement,sand and water required for 1 sq feet flooring work .

2507

why cable i burning without tripping. how can protect led street lights

1581

Specific gravity of cement?

1653

I WANT BHEL PREVIOUS QUESTION

2360

why effective resistance should be more than static resistance in transmission line?

2102

how can you size an automatic voltage regulator?

2355

How oxygen can be removed from steel during melting? What are fully killed steels ?

1167

what is the function of gss in the dg set.

1971

For More Un-Answered { Engineering } Questions Click Here