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Answered on 10 Jun Exam Coaching/Engineering Entrance Coaching/GATE Coaching/Mechanical

I'm doing some part-time job, so is there any way to get GATE classes with irregularities in time, I... read more
I'm doing some part-time job, so is there any way to get GATE classes with irregularities in time, I mean weekly 3-4 days I'll have work, don't know which day it'll b. So let me know is there anyone available to teach me with these facilities. If the classes are available at early morning also let then me know. read less

Sjm

We have a virtual class room, those who have a laptop/Smart phone/desktop they can connect with us for technical courses to get knowledge to take up any Entrance exams for technical education. We will give training for CET/Gate/JEE etc for further details visit www.iseglobalsolutions.com read more

We have a virtual class room, those who have a laptop/Smart phone/desktop they can connect with us for technical courses to get knowledge to take up any Entrance exams for technical education. We will give training for CET/Gate/JEE etc

for further details visit 

www.iseglobalsolutions.com

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Lesson Posted on 24 Apr Tuition/BTech Tuition/Electrical and Electronics Measurements Exam Coaching/Engineering Entrance Coaching/GATE Coaching/Electrical Tuition/BTech Tuition/Basic Electrical Technology

Losses in a Transformer

Aritra Majumder

I am an experienced, qualified teacher and tutor with over five years of experience in teaching Physics,...

The transformer is a Static device, i.e., It has no moving parts so by common sense it must have the highest efficiency among all the other electrical machines and also higher than that of rotating machines.The different losses in a transformer are as follows:1.Core lossThese are hysteresis and eddy-current... read more

The transformer is a Static device, i.e., It has no moving parts so by common sense it must have the highest efficiency among all the other electrical machines and also higher than that of rotating machines.

The different losses in a transformer are as follows:

1.Core loss

These are hysteresis and eddy-current losses resulting from alternations of magnetic flux in the core. It may be emphasised here that the core-loss is constant for a transformer operated at constant voltage and frequency as are all power frequency equipment.

2.Copper loss (I^2R losses)

This loss occurs in winding resistances when the transformer carries the load current; varies as the square of the loading expressed as a ratio of the full-load.

3.Load loss (Stray Losses)

It largely results from leakage fields inducing eddy-currents in the tank wall, and conductors.
Dielectric loss, this loss occurs is in the insulating materials, particularly in oil and solid insulations.
However there are only Two major losses by far - Pi, the constant core (iron-loss) and Pc, the variable copper-loss.
Therefore, only these two losses will be considered in further discussions.

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Asked on 21 Apr Exam Coaching/Engineering Entrance Coaching/GATE Coaching/Computer Science & Information Technology; IT Courses/Java/Core Java

Anyone need computer science tutors for PGT ISC board?

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Lesson Posted on 28 Mar Tuition/BTech Tuition/BTech Computer Science Engineering Exam Coaching/Engineering Entrance Coaching/GATE Coaching/Computer Science & Information Technology;

Binary and Complete Binary Tree

Sagar Shrivastava

Having 2 years of teaching experience in Data Structures, Analysis of Design and Algorithm and Computer...

Binary Tree - In a binary tree, every node except leaf node contains almost two children. - if every internal node contains precisely two children, then it is called 2-array binary tree. - leaves = Internal nodes (K_array-1) +1 : for binary tree K_array=2 Complete Binary tree - A binary tree where... read more

Binary Tree - In a binary tree, every node except leaf node contains almost two children.

- if every internal node contains precisely two children, then it is called 2-array binary tree.

- leaves = Internal nodes (K_array-1) +1 : for binary tree K_array=2

 

Complete Binary tree - A binary tree where all levels are full except the last level, and it is filling from "Left to Right."

- Every full binary tree is a complete binary tree, but converse need not be true.

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Answered on 17/12/2017 Exam Coaching/Engineering Entrance Coaching/GATE Coaching Tuition/BTech Tuition/BTech Mechanical Engineering

Terzaghi Institute

Third year is the right time to prepare gate, even though you can appear in the final year. Starting the preparation in 3rd year will give you confidence and you will score very high marks in the final year.
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Lesson Posted on 12/10/2017 IIT JEE/IIT - JEE Advanced Exam Coaching/Engineering Entrance Coaching/GATE Coaching

Steady Magnetic Field

Debrup Bhattacharya

Training students in Physics (and related mathematics) for IIT-JEE/NEET(then AIEEE) since 2007. Qualified...

1. i. State Ampere's circuit law. ii. A hollow conducting cylinder has inner radius a and outer radius b and carries current I along the positive z-direction. Find H everywhere. 2. Find H at the center C of an equilateral triangular loop of side 4 m carrying 5 A of current. 3. A thin plastic disk... read more

1. i. State Ampere's circuit law.

ii. A hollow conducting cylinder has inner radius a and outer radius b and carries current I along the positive z-direction. Find H everywhere.

2. Find H at the center C of an equilateral triangular loop of side 4 m carrying 5 A of current.

3. A thin plastic disk of radius R has a uniform charge density. The disk is rotating about its axis with an angular speed. Find the magnetic field along the axis of the disk at a distance z from the centre.

4. Two parallel current carrying wires of length L and mass m per unit length each are suspended from the ceiling by means of massless strings of length l each. The wires carry equal currents in opposite directions. If the angle between the wires suspended from the same point is θ, obtain an expression for the current flowing in each wire in terms of the given quantities.

5. i. A filamentary loop carrying current I is bent to assume the shape of a regular polygon of n sides. Circumscribing a circle of radius r. Find H at the centre of the polygon.

ii. Show that if n approaches infinity, the result obtained is the same as that of a circle.

6. A massless conducting rod of resistance R lies on two perfectly conducting horizontal rails separated by a distance d on a table, at one end the rods are connected by a conducting wire. A vertically upward magnetic field B exists in the region. If the rod is connected by a pulley arrangement which supports a mass m which falls down as the rod moves outward on the rails. Calculate the terminal velocity of the mass.

7. Arrive at Maxwell's corrections to Ampere's Law. Explain its significance and hence arrive at the wave equation for EM Waves.

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Answered on 09/12/2017 Exam Coaching/Engineering Entrance Coaching/GATE Coaching

NIDHIN R.A

Tutor

The best time to start GATE coaching is 3rd year.
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Answered on 14/04/2017 Exam Coaching/Engineering Entrance Coaching/GATE Coaching

S D.

Tutor

Rs. 34000-40000 discounts are also available.
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Answered on 01 Jan Exam Coaching/Engineering Entrance Coaching/GATE Coaching

Ram Lakshman Sah

Freelance Tutor

There are many coaching like as Made Easy, Gateforum, ACE Academy, Gateacademy etc. who provide very nice concept to the student but all of them Made Easy the best according to my point of view.
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Answered on 28/05/2016 Exam Coaching/Engineering Entrance Coaching/GATE Coaching

Ravi Kiran Vadlamani

Teacher

There are two type of losses in a transformer; 1. Copper Losses 2. Iron Losses or Core Losses or Insulation Losses Copper losses ( I R)depends on Current which passing through transformer winding while Iron Losses or Core Losses or Insulation Losses depends on Voltage. So the Cu Losses depend... read more
There are two type of losses in a transformer; 1. Copper Losses 2. Iron Losses or Core Losses or Insulation Losses Copper losses ( IČR)depends on Current which passing through transformer winding while Iron Losses or Core Losses or Insulation Losses depends on Voltage. So the Cu Losses depend on the rating current of the load so the load type will determine the powerfactor P.F , Thats why the rating of Transformer in kVA,Not in kW. Designer doesn?t know the actual consumer power factor while manufacturing transformers and generators i.e. the P.F (Power factor) of Transformer and Generator/Alternator depends on the nature of connected load such as resistive load, capacitive load, and inductive load as Motors, etc. But Motor has fixed Power factor, i.e. motor has defined power factor and the rating has been mentioned in KW on Motor nameplate data table. That?s why we are rated Motor in kW or HP (kilowatts/ Horsepower) instead of kVA. In addition, Motor is a device which converts Electrical power into Mechanical power. In this case, the load is not electrical, but mechanical (Motor?s Output) and we take into the account only active power which has to be converted into mechanical load. Moreover, the motor power factor does not depend on the load and it works on any P.F because of its design. read less
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