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Chittaranjan 18/03/2016 in  Engineering Diploma Tuition

Can you please explain me what is Biot-Savart law?

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Shameem replied | 18/05/2016

THE MAGNETIC FIELD CREATED BY THE ELECTRIC CURRENT IS DESCRIBED BY THE EQUATION OF BIOT-SAVARTS LAW.ITGIVES THE RELATION BETWEEEN MAGNETIC FIELD TO MAGNITUDE ,LENGTH,DIRECTION AND PROXIMITY TO ELECTRIC FIELD CURRENT...

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Naveen replied | 22/05/2016

It is used to find the magnetic field strength at a point caused by a current carrying wire.

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Abhishek 18/03/2016 in  Engineering Diploma Tuition

State the Zeorth law of thermodynamics

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Neel replied | 30/03/2016

Zeroth Law of Thermodynamics states that " If system A is in thermal equilibrium with system C, and system B is in thermal equilibrium with system C, then system A is in thermal equilibrium with system B."

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Neel replied | 01/04/2016

The Zeroth Law of Thermodynamics states that if two bodies are each in thermal equilibrium with some third body, then they are also in equilibrium with each other.

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Elnaz 17/03/2016 in  Engineering Diploma Tuition

What is LVDT?

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Vikash Lomash replied | 16/06/2016

linear variable differential transformer (LVDT)

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Bujji Babu replied | 17/06/2016

Linear Variable Differential Transformer, It is a Transducer works based on Mutual Induction Principle. It us mostly used for Linear Displacement Measurement.

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Aswini 17/03/2016 in  Engineering Diploma Tuition

What are the advantages of electrodynamometer?

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Manish replied | 02/04/2016

Can work on AC as well as DC and have minimum eddy losses

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Ros replied | 03/04/2016

1)As the instrument coils are air cared, so these instruments are free from hysteresis and eddy current errors.
2)These instruments can be used on both a.c. and d.c. and since they have a precision grade accuracy, they are very useful as transfer instruments.
3)Electrodynamometer voltmeters are very useful where accurate rms values of voltage, irrespective, of waveforms,...  more»
1)As the instrument coils are air cared, so these instruments are free from hysteresis and eddy current errors.
2)These instruments can be used on both a.c. and d.c. and since they have a precision grade accuracy, they are very useful as transfer instruments.
3)Electrodynamometer voltmeters are very useful where accurate rms values of voltage, irrespective, of waveforms, are required. This is also true for an ammeter where the two circuits have the same time constant.
4)They have a precision grade accuracy for frequencies up to 40 to 500 Hz. The low range being decided by the oscillations of the pointer. Lower grade instruments can be used for frequencies up to 10KHz. «less

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Mukund 17/03/2016 in  Engineering Diploma Tuition

Can you explain Dalton's Law of partial pressures?

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Karthik replied | 17/03/2016

p=p1+p2+p3.............etc total pressure is equal to sum of the partial pressures

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Pradeep replied | 18/03/2016

Pressure. Occupied by individual. Molecules. In vessel

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Suresh 17/03/2016 in  Engineering Diploma Tuition

What is Enthalpy?

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Ritesh replied | 17/03/2016

H=U+P*V the energy of the fluids

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Raman replied | 30/06/2016

there is no exact definition of enthalpy, it is form used by us for our convenient as summation of internal energy stored in body and product of pressure and volume.

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Nishit 16/03/2016 in  Engineering Diploma Tuition

For what purpose Kelvin's double bridge is used?

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Venkateshkumar replied | 17/03/2016

As we have discussed that Kelvin Bridge is a modified Wheatstone bridge and provides high accuracy especially in the measurement of low resistance

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Chethan replied | 03/07/2016

Kevin's double bridge is used to measure low resistance

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Ajay 16/03/2016 in  Engineering Diploma Tuition

What is Gauss law?

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M replied | 16/03/2016

The Gauss' Law is used to find electric field when the charge is continuously distributed within an object with symmetrical geometry, such as sphere, cylinder, or plane. Gauss' law follows Coulomb's law and the Superposition Principle.

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Hsa Tuition Academy replied | 16/03/2016

The total of the electric flux out of a closed surface is equal to the charge enclosed divided by the permittivity. The electric flux through an area is defined as the electric field multiplied by the area of the surface projected in a plane perpendicular to the field.

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Laxmi 15/03/2016 in  Engineering Diploma Tuition

The terminals of a power MOSFET are called as…………….

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Ashish S replied | 17/03/2016

Drain ,Souse and collector

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Vikash Lomash replied | 16/06/2016

source (S), gate (G), drain (D), and body (B).

The main advantage of a MOSFET over a regular transistor is that it requires very little current to turn on (less than 1mA), while delivering a much higher current to a load (10 to 50A or more).

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Karthik 15/03/2016 in  Engineering Diploma Tuition

What will be the firing frequency in a 3 phase fully controlled converter?

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Ros replied | 03/04/2016

3 times the line frequency.

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Praveen replied | 12/05/2016

12 ,23,34,45,56,61,12,23,34.....so on

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Chai 14/03/2016 in  Engineering Diploma Tuition

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Er. Gauri Vishal Kirola replied | 12/07/2016

mica capacitor

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Naleena replied | 12/07/2016

Mica cap

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Shreeya 14/03/2016 in  Engineering Diploma Tuition

In pipe lines, why we always provide a surge tank?

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S.shekar replied | 13/05/2016

to avoid the effect of hammering of water on the inner surface of pipes other wise the pipe will burst if flowing water is stopped immedietly. this is controlled by surge tank by which we can control the pressure of liquids in pipes. shortly we can say to avoid hammering effect of water or liquids.

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Rohit replied | 21/05/2016

We provide a surge tank because, just in case if someone suddenly closes the outlet valve while the water is flowing through the pipe, it will produce an effect knon as water hammer which will destroy the pipe. If a surge tank is there then the water will go and rise in surge tank Ra ty her than producing water hammer. It's a kind of fail safe system.

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Sahiba 14/03/2016 in  Engineering Diploma Tuition

State Ohm's law?

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Girish replied | 15/03/2016

when physical state of conductor remain same then current flowing through the conductor will be directly proportional to the potential different applied across it. But understand one thing this law is strictly applicable to the devices which follows linear characteristics.

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Vikash Lomash replied | 16/06/2016

Ohm's Law deals with the relationship between voltage and current in an ideal conductor. This relationship states that: The potential difference (voltage) across an ideal conductor is proportional to the current through it. The constant of proportionality is called the "resistance", R.

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Tania 14/03/2016 in  Engineering Diploma Tuition

When an electron moves at velocity v in combined electric and magnetic fields E and H, the Lorentz force F is F = - e(E + v x B). Is it true?

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Aftab replied | 03/04/2016

yes.

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Pradyumna replied | 05/04/2016

Yes.........as electron has a negative charge....but anyone should keep in mind about the direction of resultant force

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Md 13/03/2016 in  Engineering Diploma Tuition

If I am asked to design and supervise a truss for a factory to have spans 6 m to 9 m. Which type of the truss should I use?

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Patimeeda replied | 01/04/2016

you can use steel roof trusses for the whole factory...

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Suprabhat Jakati replied | 22/06/2016

You can use a simple Warren Truss or a Prat Truss.

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Deepika 13/03/2016 in  Engineering Diploma Tuition

What is the chemical name of marble?

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Salman replied | 19/04/2016

Calcium carbonate

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Er. Gauri Vishal Kirola replied | 12/07/2016

marble is made up of calcium carbonate CACO3 . chemical name of marbleis calcium carbonate .

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Benjamin 13/03/2016 in  Engineering Diploma Tuition

What is Newton's second law of motion?

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Neel replied | 08/04/2016

Newton's second law states that the net force applied on a body is equal to the rate of change in its momentum.

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Raman replied | 08/07/2016

Net force applied on body by surrounding is equal to rate of change of momentum.

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Divya 13/03/2016 in  Engineering Diploma Tuition

What is engineering drawing?

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Raman replied | 02/07/2016

It is specific type of drawing by use of specific instrument like drafter, no. of pencil, scale and other many to draw on paper with specification or exact dimension.

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Roop replied | 06/07/2016

Drawing and then understanding the complete details of any equipment or system.

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Amritangshu 13/03/2016 in  Engineering Diploma Tuition

Why cast iron piles are used in construction?

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Jignesh replied | 22/04/2016

Because cast iron piles have got good compressive strenght and it absorbs vibrations too.

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Vikas replied | 08/07/2016

Cast iron is a brittle material which has high strength in compression and as we know pillars are subject to compressive load that's why cast iron is used in pillars.

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Kirti 12/03/2016 in  Engineering Diploma Tuition

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Rajesh replied | 01/06/2016

Equivalent

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Arun Sundara Nayagam D replied | 24/06/2016

Resolving

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Neha 12/03/2016 in  Engineering Diploma Tuition

What is Bitumen felt?

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Sravan replied | 09/04/2016

Bitumen (asphalt or coal-tar) is a mixed substance made up of organic liquids that are highly sticky, viscous, and waterproof.

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Ashish replied | 10/04/2016

Bitumen felt is basically used for water proofing and for leakage protection

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Saukat 12/03/2016 in  Engineering Diploma Tuition

The periodic time of a particle with simple harmonic motion is __________ proportional to the angular velocity.

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Sravan replied | 09/04/2016

inversely

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Gaurav replied | 11/04/2016

inversely

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Rajmohan 12/03/2016 in  Engineering Diploma Tuition

Which is the binding material used in mortar?

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Neel replied | 24/04/2016

Portland cement is the binding material

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Umar replied | 29/04/2016

The role if binder is to hold all the aggregates together. Binder doesn't provide strength at all. Binder can be:
1Cement
2 Lime
3 combination of the two

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Sample 11/03/2016 in  Engineering Diploma Tuition

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Akhilesh replied | 13/04/2016

Force is vector quantity.
F=mass×acceleration . Where mass is magnitute and acceleration is direction .
Vector quantity has both magnitude and direction .
Hence Force is a vector quantity.
Force is applied on a particular direction this makes force a vector quantity

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Priyanka replied | 14/04/2016

As F=m*a, a product of mass and acceleration. Acceleration is a vector quantity whereas mass is a scalar quantity. Product of scalar and vector quantity is a vector quantity. This shows that force is a vector quantity.

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Thileshwari 11/03/2016 in  Engineering Diploma Tuition

What is Newton's first law of motion?

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Deepa Vikram replied | 12/03/2016

Newtons first law of motion states that an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.Also known as law of Inertia.

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Semalla replied | 02/07/2016

newtons first law of motion mainly describes about inertia i.e, when a body is in motion or rest it continues it condition until an external force acts on it for example when bus moves we suddenly jump backwards

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